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Select data by geographic area: United States (North America)

United States

country in North America
Records Database title
7,308 Alaska Resource Data File
A comprehensive database of Alaskan mineral deposits compiled from the published literature and from unpublished reports and data from industry, the US Bureau of Land Management, and USGS.
2,626 Radiometric ages of rocks from Alaska
Radiometric ages of rocks or minerals sampled from Alaska. The data were collected from professional publications and/or received from researchers and used by permission.
6,778 Active mines and mineral plants in the US
Mine plants and operations for commodities monitored by the National Minerals Information Center of the USGS. Operations included are those considered active in 2003 and surveyed by the USGS.
267,005 Mineral Resource Data System
MRDS describes metallic and nonmetallic mineral resources throughout the world. Included are deposit name, location, commodity, deposit description, geologic characteristics, production, reserves, resources, and references.
398,983 National Geochemical Database: Rock
Geochemical analysis of rock samples collected and analyzed by the USGS. This dataset includes and supersedes rock data formerly released as "Geochemistry of igneous rocks in the US extracted from the PLUTO database"
99 Volcanogenic massive sulfide deposits of the world; database and grade and tonnage models
Information on VMS deposits from around the world with new grade and tonnage models for three subtypes of VMS deposits and data allowing locations of all deposits to be plotted using GIS.
3 World copper smelters
Locations and characteristics of the copper smelters throughout the world as of 2002.
21 Compilation of mineral resource data for Mississippi Valley-Type and clastic-dominated sediment-hosted lead-zinc deposits
Global compilation of information on the sediment-hosted Pb-Zn deposits traditionally called sedimentary exhalative (SEDEX) and Mississippi Valley Type (MVT) deposits, including updated updated grade and tonnage data.
65 Sediment-hosted zinc-lead deposits of the world - Database and grade and tonnage models
This report provides information on sediment-hosted zinc-lead mineral deposits based on the geologic settings that are observed on regional geologic maps.
260,929 Alaska Geochemical Database, Version 2.0 (AGDB2)--including "best value" data compilations for rock, sediment, soil, mineral, and concentrate sample media
Geochemical analyses of rocks, mineral separates, bulk samples from lake and stream sediments, heavy mineral concentrates, and soils collected by USGS from 1962 to 2009.
1,319 Chemical analyses of soils and other surficial materials of the conterminous US
Geochemistry of soils and other regoliths collected and analyzed by Hans Shacklette and colleagues from 1958 until about 1976.
397,115 Geochemistry of stream sediments in the US from the NURE-HSSR database
National-scale geochemical analysis of stream sediments and soils in the US collected and analyzed under the National Uranium Resource Evaluation program.
334,991 Geochemistry of water samples in the US from the NURE-HSSR database
National-scale geochemical analysis of water samples in the US collected and analyzed under the National Uranium Resource Evaluation program.
74,406 National geochemical survey database
National-scale geochemical analysis of stream sediments and soils in the US, from existing data, reanalysis of existing samples, and new sampling. Goal for sample density is one per 289 square km.
100 Porphyry copper deposits of the world
Information on porphyry copper deposits from around the world with grade and tonnage models, a general classification based on geologic setting, mineralogy, with data allowing locations of these deposits to be plotted using GIS.
5 Carbonatites of the world, explored deposits of Nb and REE
Data on 60 of the 527 known carbonatites in the world, providing reliable quantitative data on ore tonnages and grades of niobium and REE.
101 Sediment-hosted copper deposits of the world
Characteristics of 785 deposits, including grade, tonnage, rocks, mineralogy, and references
6,253 An index to PGE-Ni-Cr deposits and occurrences in selected mineral-occurrence databases (web-accessible database)
A compendium of references to previously published databases and database records that describe PGE, nickel, and chromium deposits and occurrences. These data show where to obtain more detailed information about each deposit or occurrence.
107 Rare earth element mines, deposits, and occurrences
Location, geologic and mineral economic data for world rare earth mines, deposits, and occurrences compiled from published and non-published sources. Geographic coordinates are provided for 577 of the 799 deposits described here.
3 Ni-Co laterite deposits of the world
Location, type, mineralogy, name, tonnage and grade, and geological setting for 120 deposits of this type. The US has no active nickel mines or nickel reserves.
913 Asbestos mines, prospects, and occurrences in the US
Location and mineralogical characteristics of former mines, prospects, and occurrences of asbestos in the continental US. No asbestos producing mines are currently active. Data here are drawn from several previously published reports.
137 World phosphate mines, deposits, and occurrences
Geologic and mineral resource information for 1635 deposits of phosphate worldwide
581 Podiform chromite deposits
Location and characteristics of 1,124 individual mineral deposits of this type, with grade and tonnage models for chromium as well as several related elements.
18,519 National Geochronological Database
Radiometric ages of geological materials by K-Ar, Rb-Sr, Sm-Nd, fission track, and U-Th-Pb dating methods. A revision of DDS-14 correcting locations and providing the data in more convenient formats.
101,656 National Geochemical Database: Soil
Geochemical analysis of soil samples from the National Geochemical Database. Primarily inorganic elemental concentrations, most samples are from the continental US and Alaska.
136,606 National Geochemical Database: Concentrate
Geochemistry of concentrates from the National Geochemical Database. Primarily inorganic elemental concentrations, most samples are from the continental US and Alaska.
4,857 Geochemical and mineralogical data for soils of the conterminous United States
Systematic geochemical and mineralogical survey of soil horizons analyzed using a consistent set of methods, sample spacing 1 per 1,600 sq km.
315,703 National Geochemical Database: Sediment
Geochemical analysis of sediment samples from the National Geochemical Database. Primarily inorganic elemental concentrations, most samples are of stream sediment in the continental US and Alaska.
294 Global assessment of undiscovered copper resources
Deposits, prospects, and permissive tracts for porphyry and sediment-hosted copper resources worldwide, with estimates of undiscovered copper resources.
2,337,483 Total for all databases
Byproduct metals and rare-earth elements used in the production of light-emitting diodes—Overview of principal sources of supply and material requirements for selected markets
Investigates the expanding LED industry and it’s manufacturing complexities. The sources and supply of the select mineral commodities used and the manufacturing process and supply chain are discussed.
Energy and Minerals Science at the U.S. Geological Survey
Describes resource management challenges and the providing of a scientific foundation for policy and decision making with respect to resource use, sustainability, environmental protection, and an adaptive resource management approach.
Frac sand in the United States: a geological and industry overview
Discusses the physical properties of frac sand, its geologic origin and formation contributing processes, its use in industry, consumption history and a global outlook. US / Canadian producers are detailed and potential other sources delineated in a GIS
National Mineral Resource Assessment 1998
Estimates of the tonnages and amounts of contained metal in undiscovered deposits, mineral deposit types.
Conflict minerals from the Democratic Republic of the Congo: global tantalum processing plants, a critical part of the tantalum supply chain
Sources are discussed to identify risks to the United States associated with critical supply of this strategic mineral / metal and to provide supply chain transparency to policymakers. Focus is on the post-mining, pre-consumer-product part of the chain.
Conflict minerals from the Democratic Republic of the Congo: global tungsten processing plants, a critical part of the tungsten supply chain
Sources are discussed to identify risks to the United States associated with critical supply of this strategic mineral / metal and to provide supply chain transparency to policymakers. Focus is on the post-mining, pre-consumer-product part of the chain.
An exploration in mineral supply chain mapping using tantalum as an example
Investigates the complexity of mineral and metal supply chains in general and shows how they can be mapped. A supply chain is made up of all the manufacturers, suppliers, and information networks supplying materials and parts for production.
Geochemical landscape of the conterminous US: maps of NURE-HSSR data
Maps derived from a subset of the National Uranium Resource Evaluation Hydrogeochemical and Stream Sediment Reconnaissance data. Samples are from streams, lakes, ponds, springs, playas, and soils. Includes Na, Ti, Fe, Cu, Zn, As, Ce, Hf, Pb, Th, and U.
Geochemistry of soils in the US from the RASS database
Geochemical data for soils collected by USGS personnel and analyzed by the USGS. These data were originally entered into the Rock Analysis Storage System (RASS), a database that is now merged into the National Geochemistry Database.
Geochemistry of unconsolidated sediments in the US from the RASS database
Geochemical data for unconsolidated sediments (stream sediments, lake sediments, etc.) collected by USGS personnel and analyzed by USGS. These data were part of the Rock Analysis Storage System and are now merged into the National Geochemistry Database.
Bouguer gravity anomaly grid for the conterminous US
Measurements of the gravitational field vary slightly from place to place due to the composition and structure of Earth's crust. This digital grid describes the Bouguer gravity anomaly for the conterminous US.
Value of mineral production by state in the US
The value of mineral production by state in the United States. The data represent commodities covered by the Minerals Information Team (MIT) of the U.S. Geological Survey.
Geology of the conterminous United States
A digital version of the Geologic Map of the United States, originally published at a scale of 1:2,500,000 (King and Beikman, 1974b). It excludes Alaska and Hawaii.
Isostatic residual gravity anomaly grid for the conterminous US
Measurements of the gravitational field vary slightly from place to place due to the composition and structure of Earth's crust. This digital grid describes the isostatic residual gravity anomaly for the conterminous US.
Terrestrial radioactivity and gamma-ray exposure in the United States and Canada
Data generated by aerial sensing of radiation emanating from the earth's surface provides general estimates of the geographic distribution of Uranium, Thorium, and Potassium in surficial and bedrock units. Covers the conterminous United States, southeaste
National geophysical data grids; gamma-ray, gravity, magnetic, and topographic data for the conterminous United States
Gridded geophysical data in a variety of formats.
1998 Assessment of undiscovered deposits of gold, silver, copper, lead, and zinc in the United States
Estimates of the tonnages and amounts of contained metal in undiscovered deposits, mineral deposit types.
Bedrock and soil geochemistry from Voyageurs National Park, Minnesota
Analyses to establish the background and baseline geochemistry for bedrock and soil in the region, and to determine terrestrial mercury sources and sinks in the park
Selected geochemical data for modeling near-surface processes in mineral systems
Data on a variety of mineral deposit types that have variable environmental effects when exposed at the ground surface by mining or natural processes.
A bibliography of some geophysical computer programs, databases, and maps from the U.S. Geological Survey, 1971-1994
A collection of references of geophysical computer programs, databases, and maps from the USGS
Major- and trace-element concentrations in soils from two continental-scale transects of the United States and Canada
Spreadsheets containing geochemical data for soils
Aeromagnetic and aeroradiometric data for the conterminous United States and Alaska from the National Uranium Resource Evaluation (NURE) program of the U.S. Department of Energy
Aeroradiometric and aeromagnetic flight-line data from surveys flown at 400 feet with line spacing from 3 to 6 miles from 1974 through 1981.
Historical Files from Federal Government Mineral Exploration-Assistance Programs, 1950 to 1974
Scanned documents describing applications for Federal assistance in exploring for certain strategic and critical minerals, including where the deposits were examined what minerals were found, and whether mining had occurred.
Qualitative assessment of selected areas of the world for undiscovered sediment-hosted stratabound copper deposits
For each area in which this type of deposit may occur, we provide the main characteristics of the area, classification of known deposits by subtype, and a rank indicating the potential of the area to contain undiscovered resources.
Environmental characteristics of the abandoned Greenwood Mine area, Prince William Forest Park, Virginia; implications for mercury geochemistry
Water quality data for the area include pH, dissolved oxygen, alkalinity, total acid soluble and dissolved major and trace element concentrations for sites around the mine workings.
Audio-magnetotelluric data from the Culpeper basin, Loudoun, Fauquier, Fairfax, Prince William, Culpeper, and Orange counties, Virginia
Hydrothermal Alteration Maps of the Central and Southern Basin and Range Province of the United States Compiled From Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Data
Maps and data showing the geographic distribution of surficial minerals likely produced by hydrothermal alteration, which may indicate areas permissive of gold and copper mineral deposits.
Maps of hydrothermal alteration in the Basin and Range province of the US
Maps and data showing the geographic distribution of surficial minerals likely produced by hydrothermal alteration, which may indicate areas permissive of gold and copper mineral deposits.
Automated mapping of mineral groups and green vegetation from Landsat Thematic Mapper imagery with an example from the San Juan Mountains, Colorado
Analysis of multispectral satellite imagery allows us to identify areas covered by various types of minerals and vegetation, with results provided in image files you can use in GIS.
Candidate-penetrative-fracture mapping of the Grand Canyon area, Arizona, from spatial correlation of deep geophysical features and surficial lineaments
Includes a wide variety of geological and geophysical data: geologic, aeromagnetic, and gravity maps with SLAR, DEM, TM, and NDVI imagery.
Spatial digital database for the tectonic map of southeast Arizona
Geologic map GIS which represents the original content of the published geologic map and which can be queried in many ways to produce a variety of geologic maps and derivative products.
An interpretation of the 1996 aeromagnetic data for the Santa Cruz basin, Tumacacori Mountains, Santa Rita Mountains, and Patagonia Mountains, South-Central Arizona
Measurements of in-situ magnetic properties of several map units to determined whether or not mapped lithologies were responsible for aeromagnetic anomalies observed in a previous high-resolution survey (data of Sweeney, 2000).
Spatial Digital Database of the Geologic Map of Catalina Core Complex and San Pedro Trough, Pima, Pinal, Gila, Graham, and Cochise Counties, Arizona
Geologic map information in GIS formats
An interpretation of the 1997 airborne electromagnetic (AEM) survey, Fort Huachuca vicinity, Cochise County, Arizona
Grids and flight-line magnetic and conductivity data
Gravity data from the San Pedro River Basin, Cochise County, Arizona
321 observed gravity values with free-air, simple Bouguer, and complete Bouguer anomaly values; high-precision relative-gravity surveys repeated over time, useful for aquifer-storage-change monitoring; and absolute gravity values for use as base stations.
Whole rock geochemistry and grain-size analyses from sediment and rock near Tuba City Open Dump, Tuba City, Arizona
Chemical analysis of geological materials at this EPA Superfund site located on lands of the Hopi and Navajo nations, which may contain mine waste.
Geochemical analyses of rock, sediment, and water from the region in and around the Tuba City landfill, Tuba City, Arizona
Regional samples of rock, sediment, leachates, and water were collected in and around the TCL site and analyzed for major and minor elements and radionuclides
Geochemical data from analyses of rock, sediment, water, and solid-phase leaching at the Tuba City open dump, Tuba City, Arizona
Study of sources and resulting transport of radionuclides and other dissolved constituents in the surrounding ground water.
Element concentrations in surface soils of the Coconino Plateau, Grand Canyon region, Coconino County, Arizona
Geochemical analysis of 47 elements in more than 700 soil samples that appeared to be unaffected by mineralization or anthropogenic contamination.
Digital data for construction material sources reported by the Arizona Department of Transportation in 1977 for Maricopa County, Arizona
Point features representing pit locations and attribution data captured from an atlas of map sheets and pit data sheets by the Arizona Highway Department
Gravity and magnetic data in the vicinity of Virgin Valley, southern Nevada
Field measurements: 548 gravity and 6484 magnetic anomaly locations, data in fixed-format text files.
Principal facts for gravity stations and physical property measurements in the Lake Mead 30x60 minute quadrangle, Nevada and Arizona
Gravity data were collected in support of geologic mapping of the quadrangle. In addition, older gravity data were reprocessed for consistency and included, as well as 250 measurements of density and magnetic susceptibility.
Six aeromagnetic surveys in California, Nevada, and Arizona
Grid and flight-line data files provided to USGS by contract geophysical surveyors
Gravity and magnetic surveys over the Santa Rita fault system, southeastern Arizona
Gravity station data and hand-held magnetometer measurements with analysis and description of methodology
Three aeromagnetic surveys in south central Arizona
Grids and flight-line data for the surveys of this area
Geologic map of the Patagonia Mountains, Santa Cruz County, Arizona
Spatial databases for map units, strike and dip, geologic contacts, faults, dikes, in addition to a topographic base map are provided in an Esri file geodatabase. The geologic mapsheet is also provided as a PDF.
Geochemistry of soils from the San Rafael Valley, Santa Cruz County, Arizona
Surficial geochemical methods used to identify subsurface mineral deposits covered by alluvium. Can a geophysical anomaly, interpreted as a buried granite pluton, be discerned from the geochemical characteristics of overlying Quaternary sediments?
Major- and trace-element concentrations in soils from northern California: Results from the Geochemical Landscapes project pilot study
Regional-scale geochemical survey designed to serve as a baseline for further analyses, and to understand effects of historical mining in the area.
A compilation of K-Ar-ages for southern California
Conventional K-Ar ages for granitic, volcanic, and metamorphic rocks collected in this area.
Analytical Results and Sample Locality Map for Rock, Stream-Sediment, and Soil Samples, Northern and Eastern Colorado Desert BLM Resource Area, Imperial, Riverside, and San Bernardino Counties, California
A geochemical survey of the Bureau of Land Management's 5.5 million-acre Northern and Eastern Colorado Desert Resource Area
Isostatic gravity map of the Las Vegas 30'x60' quadrangle, California and Nevada
Includes principal facts (gravity observations) for 2,506 stations.
Geologic and geophysical maps of the Death Valley ground-water model area, Nevada and California
Maps and geospatial data for (a) geology; (b) tectonics; (c) isostatic gravity anomaly; (d) aeromagnetic anomaly; (e) depth to pre-Cenozoic basement.
Gravity and ground magnetic data from selected traverses in the Amargosa desert and vicinity, Nevada and California
Maps of aeromagnetic data and a table of gravity station data now available for download
Ground-magnetic studies of the Amargosa desert region, California and Nevada
Hand-held magnetometer and sample magnetic susceptibility measurements used to help interpret complex patterns in the magnetic anomaly of this area.
Aeromagnetic expression of buried basaltic volcanoes near Yucca Mountain, Nevada
Mathematical modeling and analysis of aeromagnetic anomaly data (gridded data provide in another report).
Six aeromagnetic surveys in Nevada and California
Gridded data for aeromagnetic surveys with contractors' reports describing the data collection
Digital geologic map of the Nevada Test Site and vicinity, Nye, Lincoln, and Clark Counties, Nevada, and Inyo County, California, revision 4
GIS data for geologic units and structural features, with aeromagnetic and gravity maps in PDF
Aeromagnetic survey of the Amargosa desert, Nevada and California
Grid data files along with maps in PDF and PostScript accompany this report
Summary of geophysical investigations of the Death Valley regional water-flow modeling project, Nevada and California
Magnetic and gravity anomaly and structure contour data
Review of samples of tailings, soils and stream sediment adjacent to and downstream from the Ruth Mine, Inyo County, California
Detailed study of mine waste material and sediments from streams passing through it. Arsenic is the main contaminant of interest here.
Physical, chemical, and mineralogical data from surficial deposits, groundwater levels, and water composition in the area of Franklin Lake playa and Ash Meadows, California and Nevada
Presents data and describes the methods used to determine the physical attributes, as well as the chemical and mineralogical composition of surficial deposits; groundwater levels; and water composition in this area.
Aeromagnetic survey map of the central California coast ranges
Intended to promote further understanding of the geology and structure in the central California Coast Ranges, includes downloadable gridded point database.
Review of samples of sediment, tailings, and waters adjacent to the Cactus Queen gold mine, Kern County, California
Mine tailings here have high levels of arsenic. Experiments conducted on these sediments indicate that the arsenic can be released into the environment and become hazardous through chemical processes that occur when fine sediment is ingested by animals.
Preliminary isostatic residual gravity anomaly map of Paso Robles 30 x 60 minute quadrangle, California
Includes 2,604 (170 not previously published) gravity station measurements with calculations of free-air, simple Bouguer, complete Bouguer, and isostatic anomaly.
Principal facts for gravity stations in the Dry Valley area, West-Central Nevada and east-central California
Gravity measurements used for determining geologic structure to aid in understanding ground-water flow
Gravity and magnetic data along a seismic refraction-reflection line in northwest Nevada and northeast California
Report with gravity station data in a spreadsheet
Multielement geochemical dataset of surficial materials for the northern Great Basin
Geochemical data generated during mineral and environmental assessments for the Bureau of Land Management in northern Nevada, northeastern California, southeastern Oregon, and southwestern Idaho.
Geophysical studies in the vicinity of the Warner Mountains and Surprise Valley, northeast California, northwest Nevada, and southern Oregon
Gravity station data and physical property measurements used to infer subsurface geologic structure
Overview with methods and procedures of the U.S. Geological Survey mineral-resource assessment of the Sagebrush Focal Areas of Idaho, Montana, Nevada, Oregon, Utah, and Wyoming
Describes the methods, procedures, and fundamental reference information that were used throughout the assessment.
Ground magnetic data from within the Long Valley Caldera, California
Results of a detailed ground magnetic survey
Pb-concentrations and Pb-isotope ratios in soils collected along an east-west transect across the United States
Analytical results for Pb-concentrations and isotopic ratios from about 150 samples of soil A horizon and about 145 samples of soil C horizon collected along a 4000-km east-west transect across the USA.
Temporal Chemical Data for Sediment, Water, and Biological Samples from the Lava Cap Mine Superfund Site, Nevada County, California-2006-2008
This report is a compilation of water and sediment chemical data generated by the USGS study of indigenous, arsenic-sequestering microbial communities. A total of 9 synoptic sampling efforts conducted at specific sites are described.
Mineral and Vegetation Maps of the Bodie Hills, Sweetwater Mountains, and Wassuk Range, California/Nevada, Generated from ASTER Satellite Data
Analyzed remote sensing data identify and map minerals, vegetation groups, and volatiles. Four maps show: 1) mineral groups, 2) iron bearing minerals, vegetation, water, 3) clay, sulfate, mica, carbonate, Mg-OH, hydrous quartz and 4) quartz abundance.
Preliminary isostatic gravity map of Joshua Tree National Park and vicinity, southern California
Map with excel tables showing principal facts (gravity observation data).
Isostatic gravity map with geology of the Santa Ana 30'x60' quadrangle, southern California
Contour map of isostatic gravity anomaly with bedrock geology, and principal facts for the gravity stations as a separate data file.
High-resolution gravity and seismic-refraction surveys of the Smoke Tree Wash area, Joshua Tree National Park, California
These data were acquired to determine the thickness of valley-fill deposits and to delineate geologic structures that might influence groundwater flow beneath this area.
Principal facts for gravity stations in the vicinity of San Bernardino, southern California
Gravity measurements collected to help define the characteristics of the Rialto-Colton fault, with rock properties such as lithology, magnetic susceptibility and density.
Gravity map and data of the eastern half of the Big Bear Lake, 100,000 scale quadrangle, California, and analysis of the depths of several basins
Data on the southern portion of the Marine Corps Air Ground Combat Center (MCAGCC) Twentynine Palms and the Yucca Valley-Joshua Tree-Twentynine Palms area and presents the map and basin analyses.
Gravity and magnetic investigations of the Mojave National Preserve and adjacent areas, California and Nevada
Gravity station and rock physical property data used to infer geologic structure of the area
Gravity and magnetic studies of the eastern Mojave Desert, California and Nevada
Report with generalized interpretation and Excel tables of gravity and physical property data including an explanations of their formats.
Spatial databases for the geology of the Northern Rocky Mountains - Idaho, Montana, and Washington
The spatial databases represent the original content of 43 published geologic maps, provide normalized map unit descriptions, and provide additional information and interpretation not in the original reports.
Relational database for the geology of the northern Rocky Mountains; Idaho, Montana, and Washington
Geologic map unit and lithologic descriptions used in Open File Report 2005-1235, with extensive bibliographic references to geologic literature that could not be included in the spatial database.
Geology and mineral resources of the Sheldon-Hart Mountain National Wildlife Refuge Complex (Oregon and Nevada), the Southeastern Oregon and North-Central Nevada, and the Southern Idaho and Northern Nevada (and Utah) Sagebrush Focal Areas
A helicopter-borne magnetic survey over Dixie Valley geothermal field, Nevada
Gridded data from helicopter study of shallow geologic structures
Geophysical framework of the southwestern Nevada volcanic field and hydrogeologic implications
Report describing detailed interpretation of geophysical survey data to draw inferences about subsurface geologic features and likely consequences for the hydrogeologic system.
Seven aeromagnetic surveys in California and Nevada
Grid and flight-line data files provided by the geophysical survey contractors.
Geochemical analyses of geologic materials from areas of critical environmental concern, Clark and Nye counties, Nevada
Results of analysis in tabular form
Principal facts for gravity stations in the vicinity of Coyote Spring valley, Nevada, with initial gravity modeling results
Gravity study to help define the shapes of young basins filled with Cenozoic rocks and alluvium, and to identify any possible faults within these basins that might influence the movement of groundwater.
Results of gravity fieldwork conducted in March 2008 in the Moapa Valley region of Clark County, Nevada
Study aids understanding of local geologic structure and ground-water flow, includes principal facts for 266 gravity stations and physical properties of representative rock samples.
Geochemical and stable isotopic data on barren and mineralized drill core in the Devonian Popovich Formation, Screamer sector of the Betze-Post gold deposit, northern Carlin trend, Nevada
Detailed chemical and isotopic analysis of host and associated rocks within an area that is currently the largest producer of gold in the US. Part of a study of the hydrothermal activity leading to the formation of these gold deposits.
Physical-property measurements on core samples from drill-holes DB-1 and DB-2, Blue Mountain Geothermal Prospect
Density and magnetic susceptibility measurements to assist in interpretation of gravity and magnetic anomaly data
Principal facts for gravity profiles collected near the Osgood Mountains and the Slumbering Hills, north-central Nevada
Gravity station data for several surveys of this area.
Geophysical data from the Spring and Snake Valleys area, Nevada and Utah
Existing and new gravity station data and magnetometer measurements used to infer geologic structure of this area
Gravity studies of Cave, Dry Lake, and Delamar Valleys, East-Central Nevada
Gravity surveys and structural interpretation of anomaly data in support of ground-water studies
Gravity data from Dry Lake and Delamar Valleys, east-central Nevada
Principal facts (gravity observations) for 185 new stations
Principal facts for gravity stations collected in 2010 from White Pine and Lincoln Counties, east-central Nevada
Gravity observations from 99 locations in this area, with free-air, isostatic, and complete Bouguer anomalies.
Geochronology and correlation of Tertiary volcanic and intrusive rocks in part of the southern Toquima Range, Nye County, Nevada
40Ar/39Ar dating, electron microprobe analyses and geologic mapping help clarify chronology and correlations of the numerous volcanic and intrusive units exposed in the area and interpret the petrogenesis of a few of the volcanic units.
Geochemistry, geochronology, mineralogy, and geology suggest sources of and controls on mineral systems in the southern Toquima Range, Nye County, Nevada
Geochemical analysis of rock samples in DBF tables from the PLUTO database. Maps are provided in PDF only.
A preliminary investigation of the structure of southern Yucca Flat, Massachusetts Mountain, and CP basin, Nevada Test Site, Nevada, based on geophysical modeling
Maps showing aeromagnetic survey results, locations of gravity station data, and discussions of processing within the report
Modeling of the Climax Stock and related plutons based on the inversion of magnetic data, southwest Nevada
Mathematical modeling, coupled with new observations of magnetic susceptibility, yield better estimates of the underground configuration of granite plutons.
Preliminary gravity inversion model of Frenchman Flat Basin, Nevada Test Site, Nevada
Provides data for the depth below the land surface,in meters, of the modeled location of the Pre-Tertiary basement surface.
High-angle faults in the basement of Yucca Flats, Nevada Test Site, Nevada, based on analysis of a constrained gravity inversion surface
A fault map and digital fault dataset were constructed based on offsets of the basement surface. Because these faults are, in large part, not present at the surface, they are interpreted to be inactive faults, older than the alluvial basin fill.
Gravity, magnetic, and physical property data in the Smoke Creek Desert area, Northwest Nevada
Aerial, truck-towed, and hand-held magnetometer measurements, gravity station data, and sample density and magnetic susceptibility measures
Geophysical investigations of the Smoke Creek Desert and their geologic implications, northwest Nevada and northeast California
Gravity and aeromagnetic data analysis described in a report, with a few physical property analyses
Principal facts for gravity stations in the Antelope Valley-Bedell Flat area, west-central Nevada
Physical property data for selected rock samples accompany these gravity observations
Gravity data from Newark Valley, White Pine county, Nevada
Gravity station data, isostatic anomaly map, and depth to basement map derived from geophysical inverse modeling.
Complete analytical data for Jurassic igneous rocks in the Bald Mountain mining district, Nevada
Petrographic and geochemical analyses of 50 outcrop samples and 58 drill core samples.
Guide to geophysical data for the northern Rocky Mountains and adjacent areas, Idaho, Montana, Washington, Oregon, and Wyoming
Mathematical analysis of gravity and aeromagnetic data, with basic and derived grids and vector data and maps.
Geophysical studies of the Crump Geyser known geothermal resource area, Oregon, in 1975
Gravity map and data used to infer details of the geologic structure of the area. Surveys were conducted during or prior to 1975.
Aeromagnetic and gravity maps of the central Marysvale volcanic field, southwestern Utah
Maps (no data) depicting aeromagnetic and Bouguer gravity anomaly in the study area. Report discusses rock sample density and magnetic properties, but data are buried in PDF tables.
Comparison of ASTER- and AVIRIS-derived mineral and vegetation maps of the White Horse replacement alunite deposit and surrounding area, Marysvale volcanic field, Utah
Analysis of mineral and vegetation maps of parts of the Marysvale volcanic field in west-central Utah near the White Horse replacement alunite deposit.
Reconnaissance geologic map of Kodiak Island and adjacent islands, Alaska
Contains one of the largest areas of exposure of the flysch and melange of the Chugach terrane of southern Alaska. This map and its associated digital files were compiled for use at a nominal scale of 1:500,000.
Preliminary integrated geologic map databases for the United States: Digital data for the reconnaissance geologic map of the Kodiak Islands, Alaska
The Kodiak Islands are located on the west side of the Gulf of Alaska and one of the largest areas of exposure of the flysch and melange of the Chugach terrane of southern Alaska.
Geologic map of the Cook Inlet region, Alaska, including parts of the Talkeetna, Talkeetna Mountains, Tyonek, Anchorage, Lake Clark, Kenai, Seward, Iliamna, Seldovia, Mount Katmai, and Afognak 1:250,000-scale quadrangles
The map updates a major geologic map of the Cook Inlet region published in 1976 incorporating new and additional mapping and interpretation. This map is also a revision of areas of overlap with the geologic map completed for central Alaska.
Digital data for the geologic framework of the Alaska Peninsula, southwest Alaska, and the Alaska Peninsula Terrane
Geospatial data sets of the geology of the Alaska Peninsula, Alaska, including a geologic map and complete unit descriptions.
Preliminary Geologic Map of the Cook Inlet Region, Alaska-- Including parts of the Talkeetna, Talkeetna Mountains, Tyonek, Anchorage, Lake Clark, Kenai, Seward, Iliamna, Seldovia, Mount Katmai, and Afognak 1:250,000-scale quadrangles
Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
Geologic map of the east half of the Lime Hills 1:250,000-scale quadrangle, Alaska
This map, compiled from geologic mapping conducted (1985-1992) by the U.S. Geological Survey as part of the Alaska Mineral Resource Assessment Program, builds upon previous USGS work unraveling the magmatic history of the Alaska-Aleutian Range batholith.
Characterization of major lithologic units underlying the lower American River using water-borne continuous resistivity profiling, Sacramento, California, June 2008
Geophysical study of the sediment under a river intended to help assess the susceptibility of this material to scour and the erosion of levees adjacent to the river.
USGS National Map of Surficial Mineralogy
Maps of exposed surface mineral groups derived from automated spectral analysis of satellite and airborne imaging systems; these data suggest areas that may contain mineral deposits of various types.
Coal fields of the conterminous United States - National Coal Resource Assessment updated version
This map sheet with accompanying Geographic Information System (GIS) project is an update of the existing U.S. Geological Survey (USGS) Conterminous U.S. Coal Fields map compiled using data primarily from the USGS National Coal Resource Assessment (NCRA).
Geochemistry of magnetite from porphyry Cu and skarn deposits in the southwestern United States
Hydrothermal orebodies and their host rocks are characterized by compositional variations in magnetite. Minor and trace element data for hydrothermal and igneous magnetite are compared with an unmineralized magnetite-series granodiorite in southwest Japan
Geochemical, modal, and geochronologic data for 1.4 Ga A-type granitoid intrusions of the conterminous United States
This report presents and makes data available to ongoing petrogenetic investigations of these rocks. It develops an accurate and current portrayal of their spatial distribution in GIS format while analyzed samples are presented via Excel workbooks.
Water and rock geochemistry, geologic cross sections, geochemical modeling, and groundwater flow modeling for identifying the source of groundwater to Montezuma Well, a natural spring in central Arizona
This report releases data, cross section, and model information related to the identification of travel paths for groundwater supply and principal stratigraphic and structural features that serve as constraints or conduits for groundwater movement.
Geochemical and mineralogical maps for soils of the conterminous United States
Geochemical and mineralogical maps along with a histogram, boxplot, and empirical cumulative distribution function plot for each element or mineral whose data are provided in DS-801
Magnetic susceptibility data for some exposed bedrock in the western conterminous United States
In-place rock magnetic susceptibility measurements for 746 sites are reported in a database. These data, collected from 1991 through 2012, are intended to help improve geophysical modeling of the Earth’s crust in the Western United States.
Geochemical and mineral maps from soils of the conterminous United States: interactive web site
Interactive web site showing geochemical and mineralogical maps along with a histogram, boxplot, and empirical cumulative distribution function plot for each element or mineral whose data are provided in DS-801
Basement domain map of the conterminous United States and Alaska
Seventy-seven major components of the North American continent were delineated at a general scale (1:5,000,000); including the general composition, geological environment, and types of primary metals endowments that can be expected in each domain.
Airborne geophysical surveys
Airborne surveys measuring the earth's magnetic field, resistivity or other electomagnetic properties, or gamma ray emission over parts of North America.
State geologic map compilation
Digital geologic maps of the US states with consistent lithology, age, GIS database structure, and format
Mining claim activity on Federal lands in the contiguous US and Alaska
Number and type of mine claims located on Federal lands and registered with the Bureau of Land Management, by year from 1976 through 2007.
Preliminary integrated geologic map databases for the United States: California, Nevada, Arizona, Washington, Oregon, Idaho, and Utah
Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
Arizona aeromagnetic and gravity maps and data
Aeromagnetic surveys of Arizona, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
History and evaluation of national-scale geochemical data sets for the United States
Overview explaining how and why six different geochemical data sets were produced, and why you might choose to use the data in any one of these instead of the others.
Geophysical terranes of the Great Basin and parts of surrounding provinces
A set of geophysical maps with anomalies that are labeled and keyed to tables containing information on each anomaly and its source.
Geochemistry of sediments in the US from the PLUTO database
Geochemical data for unconsolidated sediments (stream sediments, lake sediments, etc.) collected in the US and analyzed by the USGS. These data were originally entered in the PLUTO database, which is now merged into the National Geochemistry Database.
Data base for undiscovered deposits of base and precious metals
Probabilistic estimates of the amounts of undiscovered gold, silver, copper, lead, and zinc in conventional types of mineral deposits in the United States.
Reported historic asbestos mines, historic asbestos prospects, and natural asbestos occurrences in the southwestern United States (Arizona, Nevada, and Utah)
Map and data tables show location, mineralogy, geology, and relevant literature for each mine, prospect, or occurrence
Digital Aeromagnetic Datasets for the Conterminous United States and Hawaii - A Companion to the North American Magnetic Anomaly Map
Digital and analog archives comprising more than 1,000 surveys, covering approximately 8,000,000 line-km of data, flown at various flight heights and line spacings
Pan-American Center for Earth and Environmental Studies (PACES) gravity data portal
Terrain-corrected US gravity station data using NAD83 and NGVD88 downloadable from a map interface.
Digitized Aeromagnetic Datasets for the Conterminous United States, Hawaii, and Puerto Rico
Aeromagnetic anomaly values digitized from older surveys
Precambrian basement structure map of the continental United States-an interpretation of geologic and aeromagnetic data
Principal basement structures formed during the Precambrian in the continental United States based on interpretation of regional aeromagnetic anomaly data of North America.
Geological map data
Characteristics of bedrock and surficial geologic terranes and structural features at various levels of detail. The information provided here are intended for use in the synoptic study of large areas, and are likely not suitable for detailed study of geog
Arizona geologic map data
A GIS database of geologic units and structural features in Arizona, with lithology, age, data structure, and format written and arranged just like the other states.
Mapping the mineral resource base for mineral carbon-dioxide sequestration in the conterminous United States
Map includes GIS data for magnesium-rich ultramafic rocks
A preliminary full spectrum magnetic anomaly grid of the United States with improved long wavelengths for studying continental dynamics
The long-wavelength (50-2,500 km) content of the regional magnetic anomaly compilation was improved by utilizing a nearly homogeneous a nearly homogeneous set of NURE magnetic surveys flown from 1975 to 1981
Geochemistry of soils in the US from the PLUTO database
Geochemical data for soils collected in the United States and analyzed by the USGS. The data were originally entered into the in-house PLUTO database. This is a subset of DDS-47.
Historical files from Federal Government mineral exploration-assistance programs, 1950 to 1974
Scanned correspondence documenting the work of these programs, typically including information about the geology and mineralization reported at locations for which development assistance was sought.
Weathering and transport of chromium and nickel from serpentinite in the Coast Range ophiolite to the Sacramento Valley, California, USA
Investigates Cr and Ni geochemistry providing insight into the mobility and bioaccessibility of these toxic trace elements throughout northern California and perhaps the origin of elevated dissolved Cr(VI) concentrations in the western Sacramento Valley
Alteration, slope-classified alteration, and potential lahar inundation maps of volcanoes for the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Volcano Archive
Identifies hydrothermally altered volcanic edifices and vulnerable areas downstream by mapping alteration on volcanoes, highlighting lahar prone watersheds using Global Digital Elevation Model data, and modeling via a lahar flow-fill modeling program
Petrographic and geochemical data for Cenozoic volcanic rocks of the Bodie Hills, California and Nevada
The purpose of this report is to present available petrographic and geochemical data for unmineralized rock samples, principally volcanic rocks and to make those data available to ongoing petrogenetic investigations of these rocks.
Geochronology of Cenozoic rocks in the Bodie Hills, California and Nevada
Presents data for mineral deposits and unaltered and hydrothermally altered volcanic rocks. Data presented were acquired in three USGS labs by three different geochronologists. Analytical methods and data derived from each lab are presented separately.
Geologic map of the Bodie Hills, California and Nevada
Spatial geologic map with rock type, vents, arcs, landslides, etc. provided in an ESRI geodatabase and KMZ format for Google Earth viewing. Mapsheet with accompanying descriptive pamphlet is provided as a PDF. Petrographic rock summary is also included.
Airborne electromagnetic data and processing within Leach Lake Basin, Fort Irwin, California
Releases airborne survey data, resistivity cross-sections and depth slices derived from data inversion. Resulting resistivity models confirm geologic framework, constrain hydrostratigraphy and depth to basement, and reveal fault and fold distribution.
Gravity survey and interpretation of Fort Irwin and vicinity, Mojave Desert, California
Provides a view of alluvial basins, shapes, areal extents, and approximate thicknesses of alluvial fill. Gravity field is separated into density variations in the basement complex and distribution of Cenozoic fill with its 3-D thickness representation.
Aeromagnetic data, processing, and maps of Fort Irwin and vicinity, California
Aeromagnetic data help provide the underpinnings of a hydrogeologic framework for Fort Irwin by locating inferred structural features or grain that influence groundwater flow. Magnetization boundaries defined by horizontal-gradient analyses coincide lo
Time-domain electromagnetic surveys at Fort Irwin, San Bernardino County, California, 2010-12
Describes electromagnetic sounding locations, data acquisition, calibration, and modeling; compares data to borehole data, correlating model results; and summarizes the applications and limitations of the TEM method. Examples of models are provided.
Digital tabulation of stratigraphic data from oil and gas wells in the Santa Maria Basin and surrounding areas, central California coast
This report makes available a large well dataset so that subsurface stratigraphic data are available in digital form for use within a GIS and in construction of three-dimensional models to address regional stratigraphic and structural questions.
Preliminary Aeromagnetic Map of Joshua Tree National Park and Vicinity, Southern California
This map is intended to promote further understanding of the geology and structure in the region by serving as a basis for geophysical interpretations and by supporting geological mapping, water-resource investigations, and various topical studies.
Magnetic and gravity studies of Mono Lake, east-central, California
Magnetic and gravity investigations were undertaken in Mono Lake to study regional crustal structures and to aid in understanding the geologic framework, in particular regarding potential geothermal resources and volcanic hazards throughout Mono Basin.
Principal facts and an approach to collecting gravity data using near-real-time observations in the vicinity of Barstow, California
The purpose of the data collection was to investigate possible changes in gravity across mapped Quaternary faults and to improve regional gravity coverage, adding to the existing national gravity database.
Preliminary aeromagnetic anomaly map of California
Map showing magnetic anomaly of California composed by merging and editing data from 123 distinct surveys conducted previously.
California geologic map data
A GIS database of geologic units and structural features in California, with lithology, age, data structure, and format written and arranged just like the other states.
Geochemical database for igneous rocks of the ancestral Cascades Arc--southern segment, California and Nevada
Compilation of all available chemical data (more than 2,000 samples) for igneous rocks that constitute the southern segment of the ancestral Cascades magmatic arc.
Digital map of major bedrock lithologic units for the Pacific Northwest: a contribution to the Interior Columbia Basin Ecosystem Management Project
Reported historic asbestos mines, historic asbestos prospects, and other natural occurrences of asbestos in California
Currently (2011) asbestos is not mined commercially in the US. This data set shows occurrences and historic mines, and includes information on talc deposits.
Podiform chromite deposits--database and grade and tonnage models
Location and characteristics of 1,124 individual mineral deposits of this type, with grade and tonnage models for chromium as well as several related elements.
Comparative mineral mapping in the Colorado Mineral Belt using AVIRIS and ASTER remote sensing data
A multidisciplinary mapping and data integration project focused on long-term resource planning by the mapping and characterization of exposed surface mineralogy, including that related to hydrothermal alteration and supergene weathering of pyritic rocks.
Geochemical maps of stream sediments in central Colorado, from New Mexico to Wyoming
Data portrayed in this portfolio of landscape geochemical maps serve as a geochemical baseline for the region, indicate element abundances characteristic of various lithologic terranes, and identify gross anthropogenic effects of historical mining
Miscellaneous geochemical data from waters in the Upper Animas River Watershed, Colorado
This report releases data for waters in which naturally occurring acid-rock drainage occurs but acid-mine drainage from historical mining continues to contribute dissolved metals further degrading preexisting water quality.
Rock Geochemistry and Mineralogy from Fault Zones and Polymetallic Fault Veins of the Central Front Range, Colorado
Data in this report will be used to better understand the processes that control epithermal mineral-deposit formation by attempting to relate the geochemistry of the primary structures that hosted hydrothermal fluid flow to their heat and fluid sources.
A Review of Aeromagnetic Anomalies in the Sawatch Range, Central Colorado
The report contains digital data, primarily a layer of polygons linked to records summarizing previous interpretations of aeromagnetic anomalies. Data are presented in updated format for input to a GIS, standard graphics software, or map-plotting package.
Distribution of Potential Hydrothermally Altered Rocks in Central Colorado Derived From Landsat Thematic Mapper Data: A Geographic Information System Data Set
As part of a mineral resource assessment, imagery data were used to help target areas where exposed rocks might be hydrothermally altered, providing an indication of the location of potentially mineralized areas that may contain mineral deposits.
Characterization of Geologic Structures and Host Rock Properties Relevant to the Hydrogeology of the Standard Mine in Elk Basin, Gunnison County, Colorado
Geological and borehole geophysical data and observations collected to characterize the basin and its surface and groundwater flow systems with primary focus on the physical characteristics of the fault vein, related mine workings, and surrounding bedrock
Geophysical Characterization of Subsurface Properties Relevant to the Hydrology of the Standard Mine in Elk Basin, Colorado
To help understand the hydrogeologic controls in the basin and how they affect surface and groundwater interactions with nearby mine workings, electrical resistivity profile, self–potential, and magnetic measurement data are provided herein.
Preliminary integrated geologic map databases for the United States: Montana, Wyoming, Colorado, New Mexico, Kansas, Oklahoma, Texas, Missouri, Arkansas, and Louisiana
Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
Colorado aeromagnetic and gravity maps and data
Aeromagnetic surveys of Colorado, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
Colorado geologic map data
A GIS database of geologic units and structural features in Colorado, with lithology, age, data structure, and format written and arranged just like the other states.
Climax-type porphyry molybdenum deposits
Descriptive mineral deposit model, with locations of known deposits of this type and a few site characteristics.
Geochemical data for Colorado soils-Results from the 2006 state-scale geochemical survey
Major and trace element concentration data for 960 sites, providing a baseline for the natural variation in soil geochemistry in Colorado.
Central Colorado Assessment Project (CCAP)-Geochemical data for rock, sediment, soil, and concentrate sample media
Chemical analysis of 47,478 samples of various geological materials to facilitate geologic mapping, petrologic studies, mineral resource assessment, and similar regional environmental assessements.
Reported historic asbestos mines, historic asbestos prospects, and natural asbestos occurrences in the Rocky Mountain states of the United States (Colorado, Idaho, Montana, New Mexico, and Wyoming)
Currently (2011) asbestos is not mined commercially in the US. This data set shows occurrences and historic mines.
Photographs of historical mining operations in Colorado and Utah
A collection of photographs of mine sites, mining operations, and tailings taken prior to 1980 at a variety of sites throughout Colorado and Utah.
Aeromagnetic map for the state of Idaho
Aeromagnetic surveys of Idaho, merged to form seamless grids across the state. Data provided in a variety of formats.
Idaho geologic map data
A GIS database of geologic units and structural features in Idaho, with lithology, age, data structure, and format written and arranged just like the other states.
A compilation of spatial digital databases for selected U.S. Geological Survey nonfuel mineral resource assessments for parts of Idaho and Montana
USGS mineral-resource assessment of Sagebrush Focal Areas in the western United States
U.S. Geological Survey (USGS) scientists have completed an assessment of the mineral-resource potential of nearly 10 million acres of Federal and adjacent lands in Idaho, Montana, Nevada, Oregon, Utah, and Wyoming. The assessment of these lands, identifie
Nebraska, Kansas, and Oklahoma aeromagnetic and gravity maps and data
Aeromagnetic surveys of Nebraska, Kansas, and Oklahoma, merged to form seamless grids across the states. Gravity anomaly data are provided as well.
Kansas geologic map data
A GIS database of geologic units and structural features in Kansas, with lithology, age, data structure, and format written and arranged just like the other states.
Precambrian basement of the north Mid-Continent U.S.A.: a digital representation of the 1990 P.K. Sims map
Geologic units, structural features, drill hole locations, and structure contours
Reported historic asbestos prospects and natural asbestos occurrences in the central United States
Currently (2011) asbestos is not mined commercially in the US. This data set describes historical mines and occurrences.
Synthesis of petrographic, geochemical, and isotopic data for the Boulder batholith, southwest Montana
Geochemical and mineralogical analyses of plutonic rock samples
Montana aeromagnetic and gravity maps and data
Aeromagnetic surveys of Montana, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
Precambrian basement geologic map of Montana--An interpretation of aeromagnetic anomalies
Geologic map showing the structure and history of the basement rocks of Montana. Most of the state is covered by Phanerozoic bedrock units; the underlying basement structure must be inferred from magnetic anomaly data combined with geologic observations.
Montana geologic map data
A GIS database of geologic units and structural features in Montana, with lithology, age, data structure, and format written and arranged just like the other states.
Constraining the location of the Archean--Proterozoic suture in the Great Basin based on magnetotelluric soundings
A regional profile on the Utah-Nevada State line reveals a deeply penetrating, broad electrical conductor suggesting the southwestern limit of intact Archean crust is farther north than previously reported with implications for future mineral exploration.
Geophysical studies in the vicinity of Blue Mountain and Pumpernickel Valley near Winnemucca, north-central Nevada
Data from more than 660 gravity stations, 100 line-km of truck-towed magnetometer traverses, and 260 physical-property sites in this area.
Nevada magnetic and gravity maps and data
Aeromagnetic surveys of Nevada, merged to form seamless grids across the state. Gravity anomaly data are provided as well. Data provided in a variety of formats.
Gravity map of Nevada
Gravity observations throughout Nevada combined to provide a consistent collection of point measurements and generate maps.
Nevada geologic map data
A GIS database of geologic units and structural features in Nevada, with lithology, age, data structure, and format written and arranged just like the other states.
Analytical Results and Sample Locations of Reanalyzed NURE Stream-Sediment and Soil Samples for the Humboldt River Basin Mineral-Environmental Assessment, Northern Nevada
The U.S. Geological Survey (USGS) and the Bureau of Land Management (BLM) collected stream-sediment and soil samples in order to evaluate the geochemistry of the Humboldt River Basin.
Comparative geology and geochemistry of sedimentary- rock-hosted (Carlin-type) gold deposits in the People's Republic of China and in Nevada, USA (Revised version)
This small database provides information about sedimentary- rock-hosted (Carlin-type) gold deposits in China.
Magnetotelluric data collected to characterize aquifers in the San Luis Basin, New Mexico
The purpose of this report is to release one north-south and two east-west regional magnetotelluric sounding profiles collected where drillhole data are sparse. No interpretation of the data is included.
New Mexico aeromagnetic and gravity maps and data
Aeromagnetic surveys of New Mexico, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
New Mexico geologic map data
A GIS database of geologic units and structural features in New Mexico, with lithology, age, data structure, and format written and arranged just like the other states.
Dataset of Aggregate Producers in New Mexico
Location and descriptive data for aggregate producers in New Mexico that are believed to have been active during the period 1997-1999.
North Dakota aeromagnetic and gravity maps and data
Aeromagnetic surveys of North Dakota, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
North Dakota geologic map data
A GIS database of geologic units and structural features in North Dakota, with lithology, age, data structure, and format written and arranged just like the other states.
Oregon magnetic and gravity maps and data
Aeromagnetic surveys of Oregon, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
Oregon geologic map data
A GIS database of geologic units and structural features in Oregon, with lithology, age, data structure, and format written and arranged just like the other states.
Reported Historic Asbestos Mines, Historic Asbestos Prospects, and Other Natural Occurrences of Asbestos in Oregon and Washington
Location, mineralogy, host rocks, and references for 51 natural occurrences of asbestos in Washington and Oregon, using descriptions found in the geologic literature.
South Dakota aeromagnetic and gravity maps and data
Aeromagnetic surveys of South Dakota, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
Principal facts for gravity data collected in South Dakota
Gravity anomaly measurements throughout the state
South Dakota geologic map data
A GIS database of geologic units and structural features in South Dakota, with lithology, age, data structure, and format written and arranged just like the other states.
Texas magnetic and gravity maps and data
Aeromagnetic surveys of Texas, merged to form seamless grids across the state. Gravity anomaly data are provided as well. Data provided in a variety of formats.
Texas geologic map data
A GIS database of geologic units and structural features in Texas, with lithology, age, data structure, and format written and arranged just like the other states.
Utah aeromagnetic and gravity maps and data
Aeromagnetic surveys of Utah, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
Utah geologic map data
A GIS database of geologic units and structural features in Utah, with lithology, age, data structure, and format written and arranged just like the other states.
Washington aeromagnetic maps and data:
Aeromagnetic surveys of Washington state, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
Washington geologic map data
A GIS database of geologic units and structural features in Washington, with lithology, age, data structure, and format written and arranged just like the other states.
Low-fluorine stockwork molybdenite deposits
Descriptive mineral deposit model, with locations of known deposits of this type and a few site characteristics.
Reconnaissance soil geochemistry at the Riverton Uranium Mill Tailings Remedial Action Site, Fremont County, Wyoming
The site, on the Wind River Indian Reservation, has Eastern Shoshone and Northern Arapahoe tribes concerned about groundwater and soil contamination. This effort studies geochemical soil variation and compares concentrations with levels established by EPA
Wyoming aeromagnetic and gravity maps and data
Aeromagnetic surveys of Wyoming, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
Wyoming geologic map data
A GIS database of geologic units and structural features in Wyoming, with lithology, age, data structure, and format written and arranged just like the other states.
Databases and simplified geology for mineralized areas, claims, mines, and prospects in Wyoming.
This data release contains mineral resource and geology data for metallic and nonmetallic mineral sites in Wyoming. Data is provided in both spreadsheet format (Microsoft Excel) and in GIS ArcView and MapInfo. Text available in PDF format.
First steps of integrated spatial modeling of titanium, zirconium, and rare earth element resources within the Coastal Plain sediments of the southeastern United States
This report summarizes the assembly of pertinent data, determination of its limits, analysis of its properties, and the relations among the different data types in preparation for future modeling.
Preliminary integrated geologic map databases for the United States: Alabama, Florida, Georgia, Mississippi, North Carolina, and South Carolina
Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
Alabama geologic map data
A GIS database of geologic units and structural features in Alabama, with lithology, age, data structure, and format written and arranged just like the other states.
Reported historic asbestos mines, historic asbestos prospects, and natural asbestos occurrences in the eastern United States
Currently (2011) asbestos is not mined commercially in the US. This shows where it has been found or mined in the past.
Arkansas and Louisiana aeromagnetic and gravity maps and data
Aeromagnetic surveys of Arkansas and Louisiana, merged to form seamless grids across the states. Gravity anomaly data are provided as well.
Arkansas geologic map data
A GIS database of geologic units and structural features in Arkansas, with lithology, age, data structure, and format written and arranged just like the other states.
Chemistry of stream sediments and surface waters in New England
Regional data for pH, alkalinity, and specific conductance for stream waters and a multi-element geochemical dataset for stream sediments collected in the New England.
New England states aeromagnetic and gravity maps and data
Aeromagnetic surveys of New England, merged to form seamless grids across the state. Gravity anomaly data are provided as well. Data provided in a variety of formats.
Preliminary integrated geologic map databases for the United States: Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, Rhode Island and Vermont
Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
Connecticut geologic map data
A GIS database of geologic units and structural features in Connecticut, with lithology, age, data structure, and format written and arranged just like the other states.
Preliminary integrated geologic map databases for the United States: Delaware, Maryland, New York, Pennsylvania, and Virginia
Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
Delaware geologic map data
A GIS database of geologic units and structural features in Delaware, with lithology, age, data structure, and format written and arranged just like the other states.
Florida geologic map data
A GIS database of geologic units and structural features in Florida, with lithology, age, data structure, and format written and arranged just like the other states.
Georgia aeromagnetic and gravity maps and data
Aeromagnetic surveys of Georgia, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
Georgia geologic map data
A GIS database of geologic units and structural features in Georgia, with lithology, age, data structure, and format written and arranged just like the other states.
Preliminary integrated geologic map databases for the United States; Minnesota, Wisconsin, Michigan, Illinois, and Indiana
Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
Illinois, Indiana, and Ohio magnetic and gravity maps and data
Aeromagnetic surveys of Illinois, Indiana, and Ohio, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
Illinois geologic map data
A GIS database of geologic units and structural features in Illinois, with lithology, age, data structure, and format written and arranged just like the other states.
Indiana geologic map data
A GIS database of geologic units and structural features in Indiana, with lithology, age, data structure, and format written and arranged just like the other states.
Iowa magnetic and gravity maps and data
Aeromagnetic surveys of Iowa, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
Iowa geologic map data
A GIS database of geologic units and structural features in Iowa, with lithology, age, data structure, and format written and arranged just like the other states.
Preliminary integrated geologic map databases for the United States: Kentucky, Ohio, Tennessee, and West Virginia
Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
Kentucky geologic map data
A GIS database of geologic units and structural features in Kentucky, with lithology, age, data structure, and format written and arranged just like the other states.
Louisiana geologic map data
A GIS database of geologic units and structural features in Louisiana, with lithology, age, data structure, and format written and arranged just like the other states.
Relation of arsenic, iron, and manganese in ground water to aquifer type, bedrock lithogeochemistry, and land use in the New England coastal basins
Geochemical data for groundwater from a variety of geologic settings.
Maine geologic map data
A GIS database of geologic units and structural features in Maine, with lithology, age, data structure, and format written and arranged just like the other states.
Lithogeochemical character of near-surface bedrock in the New England coastal basins
Re-classification of geologic units according to their geochemical properties
Maryland geologic map data
A GIS database of geologic units and structural features in Maryland, with lithology, age, data structure, and format written and arranged just like the other states.
Massachusetts geologic map data
A GIS database of geologic units and structural features in Massachusetts, with lithology, age, data structure, and format written and arranged just like the other states.
Digital geologic map and mineral deposits of the Lake Superior region- Minnesota, Wisconsin, Michigan
Bedrock geologic units, faults, and MRDS mineral deposit records for the area
Michigan geologic map data
A GIS database of geologic units and structural features in Michigan, with lithology, age, data structure, and format written and arranged just like the other states.
Bedrock geologic map of the Ashland and the northern part of the Ironwood 30 min X 60 min quadrangles, Wisconsin and Michigan
Preliminary digital geologic map of the Penokean (early Proterozoic) continental margin in northern Michigan and Wisconsin
This map portrays the geology of Early Proterozoic rocks deposited along the southern margin of the Archean Superior craton during the Penokean orogenic cycle in northern Michigan and Wisconsin.
The geochemical landscape of northwestern Wisconsin and adjacent parts of northern Michigan and Minnesota (geochemical data files)
Michigan magnetic and gravity maps and data
Best available public-domain aeromagnetic and gravity data in the State of Michigan merged into composite grids. Magnetic data compiled from 25 separate magnetic surveys.
Minnesota geologic map data
A GIS database of geologic units and structural features in Minnesota, with lithology, age, data structure, and format written and arranged just like the other states.
Mississippi geologic map data
A GIS database of geologic units and structural features in Mississippi, with lithology, age, data structure, and format written and arranged just like the other states.
Geologic field notes and geochemical analyses of outcrop and drill core from Mesoproterozoic rocks and iron-oxide deposits and prospects of southeast Missouri
Field notes, locations, rock descriptions, and geochemical analyses from a 1988 to 1994 study to facilitate new research efforts in IOCG (iron-oxide deposits in context with other iron oxide-copper ± uranium) deposit types.
Missouri aeromagnetic and gravity maps and data
Aeromagnetic surveys of Missouri, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
Missouri geologic map data
A GIS database of geologic units and structural features in Missouri, with lithology, age, data structure, and format written and arranged just like the other states.
Helicopter electromagnetic and magnetic geophysical survey data, Swedeburg and Sprague study areas, eastern Nebraska, May 2009
The objective of the contracted survey was to improve the understanding of the relation between surface water and groundwater systems critical to developing groundwater models used in management programs for water resources.
Helicopter Electromagnetic and Magnetic Geophysical Survey Data for Portions of the North Platte River and Lodgepole Creek, Nebraska, June 2008
The objective of the survey was to improve the understanding of the relationship between surface water and groundwater systems critical to developing management programs for water resources.
Airborne geophysical surveys conducted in western Nebraska, 2010: contractor reports and data
Three contractor reports and data files for an airborne electromagnetic survey describing data aquisition and processing. Processed geophysical data were inverted to produce resistivity depth sections along flight lines. Results are described herein.
Nebraska geologic map data
A GIS database of geologic units and structural features in Nebraska, with lithology, age, data structure, and format written and arranged just like the other states.
New Hampshire geologic map data
A GIS database of geologic units and structural features in New Hampshire, with lithology, age, data structure, and format written and arranged just like the other states.
Bedrock geologic map of New Hampshire, a digital representation of Lyons and others 1997 map and ancillary files
Bedrock geology with geopolitical and hydrologic information, such as political boundaries, quadrangle boundaries, hydrologic units, and water-well data
Historical zinc smelting in New Jersey, Pennsylvania, Virginia, West Virginia, and Washington, D.C., with estimates of atmospheric zinc emissions and other materials
Describes zinc smelting processes used in the mid-Atlantic states, including locations and photographs of the plants, along with statistics and discussion of environmental issues.
New Jersey aeromagnetic and gravity maps and data
Aeromagnetic surveys of New Jersey, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
New Jersey geologic map data
A GIS database of geologic units and structural features in New Jersey, with lithology, age, data structure, and format written and arranged just like the other states.
New York geologic map data
A GIS database of geologic units and structural features in New York, with lithology, age, data structure, and format written and arranged just like the other states.
North Carolina geologic map data
A GIS database of geologic units and structural features in North Carolina, with lithology, age, data structure, and format written and arranged just like the other states.
Ohio magnetic anomaly grid at flight altitude of 1000 feet above ground
Ohio complete bouguer gravity anomaly grid
Ohio geologic map data
A GIS database of geologic units and structural features in Ohio, with lithology, age, data structure, and format written and arranged just like the other states.
Oklahoma geologic map data
A GIS database of geologic units and structural features in Oklahoma, with lithology, age, data structure, and format written and arranged just like the other states.
Pennsylvania geologic map data
A GIS database of geologic units and structural features in Pennsylvania, with lithology, age, data structure, and format written and arranged just like the other states.
Rhode Island geologic map data
A GIS database of geologic units and structural features in Rhode Island, with lithology, age, data structure, and format written and arranged just like the other states.
South Carolina aeromagnetic and gravity maps and data
Aeromagnetic surveys of South Carolina, merged to form seamless grids across the state. Gravity anomaly data are provided as well. Data provided in a variety of formats.
South Carolina geologic map data
A GIS database of geologic units and structural features in South Carolina, with lithology, age, data structure, and format written and arranged just like the other states.
Preliminary Digital Geologic Map of the Appalachian Piedmont and Blue Ridge, South Carolina Segment
Tennessee geologic map data
A GIS database of geologic units and structural features in Tennessee, with lithology, age, data structure, and format written and arranged just like the other states.
Vermont geologic map data
A GIS database of geologic units and structural features in Vermont, with lithology, age, data structure, and format written and arranged just like the other states.
Provisional zircon and monazite uranium-lead geochronology for selected rocks from Vermont
Results of zircon and monazite U-Pb geochronologic analyses of 24 rock samples collected from mapped exposures identified while conducting new, detailed (1:24,000-scale) geologic or reconnaissance geologic mapping for the new state map of Vermont.
Virginia aeromagnetic and gravity maps and data
Aeromagnetic surveys of Virginia, merged to form seamless grids across the state. Gravity anomaly data are provided as well. Data provided in a variety of formats.
Virginia geologic map data
A GIS database of geologic units and structural features in Virginia, with lithology, age, data structure, and format written and arranged just like the other states.
Magnetic and gravity anomaly maps of West Virginia
Aeromagnetic surveys of West Virginia, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
West Virginia geologic map data
A GIS database of geologic units and structural features in West Virginia, with lithology, age, data structure, and format written and arranged just like the other states.
Principal facts for gravity data collected in Wisconsin
Gravity anomaly surveys of Wisconsin, both separately by survey and combined.
Wisconsin aeromagnetic and gravity maps and data
Aeromagnetic surveys of Wisconsin, merged to form seamless grids across the state. Gravity anomaly data are provided as well.
Wisconsin geologic map data
A GIS database of geologic units and structural features in Wisconsin, with lithology, age, data structure, and format written and arranged just like the other states.
Bedrock geologic map of the Port Wing, Solon Springs, and parts of the Duluth and Sandstone 30 X 60 minute quadrangles, Wisconsin
Aeromagnetic map of part of northwestern Wisconsin and adjacent areas
Geologic map of Alaska
Digital compilation and reinterpretation of published and unpublished geologic mapping of Alaska.
Geologic map of Alaska
Digital compilation and reinterpretation of published and unpublished geologic mapping of Alaska.
Geologic framework of the Alaska Peninsula, southwest Alaska, and the Alaska Peninsula terrane
Describes the peninsula’s terrane, geologic structure, and map units in detail. The geologic map and stratigraphic terrane correlation chart are included here as PDFs. These are available in a separate report digitally at pubs.usgs.gov/bul/1969b/
GIS-based identification of areas with mineral resource potential for six selected deposit groups, Bureau of Land Management Central Yukon Planning Area, Alaska
For each deposit group, a map indicates relative density and certainty of favorable data. Tables list datasets used in analysis, parameters queried, their contribution to mineral estimates and allow further user analysis. GIS files enable spatial query.
Depositional Setting and Geochemistry of Phosphorites and Metalliferous Black Shales in the Carboniferous-Permian Lisburne Group, Northern Alaska
The purpose of this paper is to present new sedimentological, paleontological, and geochemical data that allow us to define the geographic and stratigraphic extent and depositional setting of these temporally unusual phosphorites.
Geophysical and geochemical data from the area of the Pebble Cu-Au-Mo porphyry deposit, southwestern Alaska: Contributions to assessment techniques for concealed mineral resources
Uninterpreted geophysical measurements and geochemical and mineralogical analytical data from samples collected during the summer field seasons from 2007 to 2010. Data are available in a single Geographic Information System (GIS) database.
U-Pb zircon age data for selected sedimentary, metasedimentary, and igneous rocks from northern and central Alaska
Contains results of age dating studies interpreted in other reports. Samples in each study shown as separate sheets within Excel files. Analyses of each zircon are listed separately on a sheet according to filtering scheme and type of instrument used.
Geologic map of the Kechumstuk fault zone in the Mount Veta area, Fortymile mining district, east-central Alaska
This map depicts the fundamental geologic features for the western part of the Fortymile mining district and delineates the location of known bedrock mineral prospects and their relationship to rock types and structural features.
Cretaceous magmatic rocks of Alaska
Data derived from the 1994 map "Latest Cretaceous and Cenozoic magmatic rocks of Alaska" compiled by E.J. Moll-Stalcup, D.A. Brew, and T.L. Vallier, published (at 1:2,500,000 scale) in volume G-1 of "The Geology of Alaska" (GSA)
Geologic map of Alaska
Data derived from the 1980 Geologic Map of Alaska compiled by H.M. Beikman and published by the USGS. The map is a regional summary of geologic formations and units at 1:2,500,000 scale. Does not include faults, volcanoes, or correlation chart.
Generalized thermal maturity map of Alaska
Data derived from the 1996 "Generalized Thermal Maturity Map of Alaska" compiled by M.J. Johnsson and D.G. Howell, published in USGS Bulletin 2142. Combines vitrinite reflectance and conodont alteration index in generalized units.
Alaska digital aeromagnetic database description
Basic aeromagnetic data and other airborne survey information for any region of Alaska. Flight-line point information, not grids.
Merged aeroradiometric data for Alaska
Gridded data from aeroradiometric surveys of Alaska.
Composite and merged aeromagnetic data for Alaska
Magnetic anomaly expressed in grids with regular spacing derived from 85 separate surveys and provided in several different formats.
Whole Rock Geochemical Data For Paleozoic Sedimentary Rocks of the Western Brooks Range, Alaska
This report presents geochemical analyses for 210 unaltered and unmineralized rock samples of Paleozoic age in the western Brooks Range of northern Alaska.
Whole Rock Geochemical Data For Altered And Mineralized Rocks, Red Dog Zn-Pb-Ag District, Western Brooks Range, Alaska
This report presents geochemical analyses for 220 mostly altered and mineralized rock samples from the Red Dog Zn-Pb-Ag district in the western Brooks Range of northern Alaska.
Aerial gamma-ray surveys in Alaska
Measurements indicating abundance of radioactive elements in near-surface rocks. Grids and flight-line data from surveys flown 1976-1980.
Alaska aeromagnetic compilation; digital grids and survey data
Surficial geologic map of the Castle Mountain fault between Houston and Hatcher Pass Road, Alaska
A surficial geologic map showing the location of the Castle Mountain fault and other active or potentially active faults in the Matanuska-Susitna borough.
Geologic map of the Christian quadrangle, Alaska
Geology of the Christian quadrangle in the Porcupine Plateau, southern Brooks Range, and Yukon Flats. Includes geologic map, fossil data, location of oil shale, and geospatial data sets.
GIS coverages of the Castle Mountain fault, south central Alaska
The Castle Mountain fault is a major east-northeast striking fault in southern Alaska with historic seismicity and Holocene surface faulting. This data set is a compilation of fault segments from several publications.
Surficial geologic map of the Bettles quadrangle, Alaska
The Bettles quadrangle includes part of the southern Brooks Range and uplands and valleys of interior Alaska. This map depicts the surficial geology and glacial history, and includes description of map units and a correlation of map units.
Surficial geologic map of the Hughes quadrangle, Alaska
A 1:250,000 scale surficial geologic map of the Hughes quadrangle, Alaska, which extends into the southern Brooks Range and the uplands and valleys of interior Alaska. The map includes glacial history, geologic unit descriptions, and a correlation of map
Surficial geologic map of parts of the Misheguk Mountain and Baird Mountains quadrangles, Noatak National Preserve, Alaska
Primary surficial units are late Quaternary glacial, glacio-lacustrine, and fluvial deposits. Map and report include radiocarbon dates, geologic units.
Preliminary geologic map of the northeast Dillingham quadrangle (D-1, D-2, C-1, and C-2), Alaska
Map, report, and geospatial data on the geology of the northeastern part of the 1:250,000 scale Dillingham quadrangle, Alaska. Includes Ar40/39 radiometric ages, geologic unit descriptions, and correlation of map units.
Geologic and fossil locality maps of the west-central part of the Howard Pass quadrangle and part of the adjacent Misheguk Mountain quadrangle, western Brooks Range, Alaska
This publication includes a bedrock geologic map depicting the complex allochthonous structure of an area along the north flank of the west-central Brooks Range. A compilation of new and previously reported macro- and micro-fossil identifications and a
Engineering geologic maps of northern Alaska, Harrison Bay quadrangle
Map and report on the surficial deposits and bedrock of the onshore part of the Harrison Bay quadrangle, Alaska. The map area is located within the Arctic Coastal Plain and in the northeastern part of the National Petroleum Reserve of Alaska (NPRA).
Geologic map of the Ikpikpuk River quadrangle, Alaska
Geologic map of the Ikpikpuk quadrangle, compiled from previously published and unpublished sources. This map is part of a collection of digital maps of northern Alaska, that span the transition from the Brooks Range to the Arctic coastal plain.
Geologic map of the Umiat quadrangle, Alaska
Geologic map of the Umiat quadrangle, compiled from previously published and unpublished sources. This map is part of a collection of digital maps of northern Alaska, that span the transition from the Brooks Range to the Arctic coastal plain.
Geologic map of the Lookout Ridge quadrangle, Alaska
Geologic map of the Lookout Ridge quadrangle, compiled from previously published and unpublished sources. This map is part of a collection of digital maps of northern Alaska, that span the transition from the Brooks Range to the Arctic coastal plain.
Geologic map of the Utukok River quadrangle, Alaska
Geologic map of the Utukok River quadrangle, compiled from previously published and unpublished sources. This map is part of a collection of digital maps of northern Alaska, that span the transition from the Brooks Range to the Arctic coastal plain.
Geologic map of the Point Lay quadrangle, Alaska
Geologic map of the Point Lay quadrangle, compiled from previously published and unpublished sources. This map is part of a collection of digital maps of northern Alaska, that span the transition from the Brooks Range to the Arctic coastal plain.
Preliminary integrated geologic map databases for the United States: Digital data for the reconnaissance geologic map of the Yukon-Koyukuk Basin, Alaska
Reconnaissance geologic map of the Yukon-Koyukuk basin, Alaska, which is a region characterized by isolated hilly areas and low mountain ranges, separated by broad alluviated interior and coastal lowlands.
Geologic map of the Wrangell-Saint Elias National Park and Preserve, Alaska
Reconnaissance geologic map of the largest National Park in the US. Map area includes high mountains, active and ancient volcanoes, expansive ice fields, and alpine and tidewater glaciers. Kennecott Mine, a world-class copper deposit is located in the p
Geologic map of the Big Delta B-1 quadrangle, east-central Alaska
Geologic mapping and U-Pb age dating of the Big Delta B-1 quadrangle provides insights into the geology and gold mineralization of the headwater region of the Goodpaster River.
Geologic map of the Big Delta B-2 quadrangle, east-central Alaska
Geologic map of the Big Delta B-2 quadrangle, including U-Pb geochronology, correlation chart, and description of map units.
Alaska geologic map data
A GIS database of geologic units and structural features in Alaska, with lithology, age, data structure, and format written and arranged just like the other states.
Compilation of Alaska gravity data and historical reports
Gravity measured from 1958-2005, with standard gravity reduction calculations applied to correct for latitude, elevation, topography, and isostasy.
Mesozoic magmatism and base-metal mineralization in the Fortymile mining district, eastern Alaska--Initial results of petrographic, geochemical, and isotopic studies in the Mount Veta area
Initial results of a petrographic, geochemical, and isotopic study of Mesozoic intrusive rocks and spatially associated Zn-Pb-Ag-Cu-Au prospects in the area.
Geochemical and Sulfur-Isotopic Signatures of Volcanogenic Massive Sulfide Deposits on Prince of Wales Island and Vicinity, Southeastern Alaska
Alaska Geochemical Database (AGDB)-Geochemical data for rock, sediment, soil, mineral, and concentrate sample media
Geochemical analyses of rocks, mineral separates, bulk samples from lake and stream sediments, heavy mineral concentrates, and soils collected by USGS from 1962 to 2009.
Alaska Geochemical Database, v2
Geochemical analyses of rock, sediment, soil, mineral, and heavy mineral concentrate samples in Alaska analyzed from 1962 through 2009, with best-value estimates.
The geochemical atlas of Alaska, 2016
Georeferenced images depicting the concentration of 68 chemical elements in the near-surface materials (sediments and soils).
Reconnaissance geologic map of the Kuskokwim Bay region, southwest Alaska
A geologic map constructed primarily from reconnaissance studies from the 1950s to 1990s. The rocks of the map area range from Proterozoic age metamorphic rocks of the Kanektok metamorphic complex to Quaternary age mafic volcanic rocks of Nunivak Island.
Preliminary integrated geologic map databases for the United States: Digital data for the reconnaissance geologic map for the Kuskokwim Bay region of southwest Alaska
Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
Preliminary grid data and maps for an aeromagnetic survey of the Taylor Mountains quadrangle and a portion of the Bethel quadrangle, Alaska
Preliminary data (grids and images) and maps for a new aeromagnetic survey
Aeromagnetic survey of Dillingham Area in Southwest Alaska
Gridded survey data with summary map images.
Powder X-ray diffraction laboratory, Reston, Virginia
Describes the instruments features and its application to a variety of earth science issues including but not limited to: amorphous phases, ore deposits, unconventional energy resources, organics and coal, soils and sediments, clay and rare earth minerals
Geology and mineral resources of the North-Central Idaho Sagebrush Focal Area: Chapter C in Mineral resources of the Sagebrush Focal Areas of Idaho, Montana, Nevada, Oregon, Utah, and Wyoming
Spatial database of mining-related features in 2001 at selected phosphate mines, Bannock, Bear Lake, Bingham, and Caribou Counties, Idaho
Features include mine pit; backfilled mine pit; waste rock dump; adit and waste rock dump; ore stockpile; topsoil stockpile; tailings or tailings pond; sediment catchment; facilities; road; railroad; water reservoir; disturbed land, undifferentiated; and
Digital database of mining-related features at selected historic and active phosphate mines, Bannock, Bear Lake, Bingham, and Caribou Counties, Idaho
Spatial database that delineates mining-related features in areas of historic and active phosphate mining.
Chemical Composition of Samples Collected from Waste Rock Dumps and Other Mining-Related Features at Selected Phosphate Mines in Southeastern Idaho, Western Wyoming, and Northern Utah
Chemical analyses for 31 samples collected from various phosphate mine sites in southeastern Idaho (25), northern Utah (2), and western Wyoming (4)
Preliminary gravity and magnetic data of the Lake Pillsbury northern Coast Ranges, California
Report with excel tables showing principal facts (gravity observation data) and ground magnetic data.
Environmental impact of the Helen, Research, and Chicago mercury mines on water, sediment, and biota in the Upper Dry Creek watershed, Lake County, California
Data from field sampling of tailings, waste rock, sediment, and water at the mines, along with water, sediment, and biota in a pond and tributaries that drain from the mine area, to help assess the chemical hazards due to historic mining.
Geologic map of the Bartlett Springs Fault Zone in the vicinity of Lake Pillsbury and adjacent areas of Mendocino, Lake, and Glenn Counties, California
Map and study intended to provide geologic information for the regional study of materials properties, earthquake shaking, landslide hazards, mineral potential, seismic velocity, and earthquake faults.
Impact of mine and natural sources of mercury on water, sediment, and biota in Harley Gulch adjacent to the Abbott-Turkey Run mine, Lake County, California
Detailed samples around these abandoned mines will help to determine how well site remediation efforts have worked to reduce the dangerous levels of mercury that come from both natural sources here as well as the abandoned mines.
Principal facts for gravity data along the Hayward fault and vicinity, San Francisco Bay area, northern California
Data and associated physical property measurements were collected as part of on-going studies to help determine the earthquake hazard potential of major faults within the San Francisco Bay region
Preliminary isostatic gravity map of the Sonoma Volcanic field and vicinity, Sonoma and Napa counties, California
Gravity station data from three separate surveys
Mercury release from the Rathburn Mine, Petray Mine, and Bear Valley saline springs, Colusa County, California 2004-2006
Summary of data obtained from field sampling of mine tailings and waste rock and water and sediment in regional springs and tributaries that drain from the mine area into Bear Creek. Ground-water springs are also potential sources of mercury here.
Geology of the Prince William Sound and Kenai Peninsula region, Alaska
The region includes a significant part of one of the world’s largest accretionary complexes and a small part of the classic magmatic arc geology of the Alaska Peninsula. The map was compiled from existing mapping augmented by available new or revised data
Preliminary integrated geologic map databases for the United States: Digital data for the reconnaissance bedrock geologic map for the northern Alaska peninsula area, southwest Alaska
Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
Digital Data for the Reconnaissance Geologic Map for Prince William Sound and the Kenai Peninsula, Alaska
Geologic map compiled from existing sources without generalization, with new or revised data where available. Part of a statewide geologic map database effort in which the structure and content of the data is as consistent as is practical.
Preliminary integrated geologic map databases for the United States: Digital data for the geology of Wrangell-Saint Elias National Park and Preserve, Alaska
GIS dataset for 'Geologic map of the Wrangell-Saint Elias National Park and Preserve, Alaska' USGS SIM 2877. The map area includes high mountains, active and ancient volcanoes, expansive ice fields, and alpine and tidewater glaciers.
Geologic map of central (interior) Alaska
Geologic map and associated digital databases of central Alaska. Compilation and reinterpretation of previously published and unpublished mapping at 1:250,000 scale, with limited 1:125,000 and 1:63,360 scale mapping.
Density and magnetic susceptibility values for rocks in the Talkeetna mountains and adjacent region, south-central Alaska
A compilation and statistical analysis of 306 density and 706 magnetic susceptibility measurements of rocks from south-central Alaska
Stream-sediment samples reanalyzed for major, rare earth, and trace elements from seven 1:250,000-scale quadrangles, south-central Alaska, 2007-09
New analyses of 1,075 previously collected stream sediment samples, measuring more elements with better precision. Includes arsenic, gold, palladium, and platinum and 55 major, rare earth, and trace element concentrations.
Principal facts for 408 gravity stations in the vicinity of the Talkeetna Mountains, south-central Alaska
Data collected as part of a geological and geophysical framework study
Stream-sediment samples reanalyzed for major, rare earth, and trace elements from ten 1:250,000-scale quadrangles, south-central Alaska, 2007-08
New data for 366 previously collected stream-sediment samples, because recently developed analytical methods can detect additional elements of interest and have lower detection limits than the methods used when these samples were originally analyzed.
Aeromagnetic surveys in the Anchorage, Iliamna, and Tyonek quadrangles, Alaska
Gridded data from aeromagnetic surveys
Geochemical data for samples collected in 2007 near the concealed Pebble porphyry Cu-Au-Mo deposit, southwest Alaska
Analytical results for geochemical samples collected in 2007 from the Pebble deposit and surrounding environs
Geochemical data for samples collected in 2008 near the concealed Pebble porphyry Cu-Au-Mo deposit, southwest Alaska
Chemical analysis of surface samples taken over a well known but concealed deposit to understand metal migration into the surface materials and to assess the power of surface sampling for detecting concealed deposits of this type.
Digital data from the Great Sand Dunes airborne gravity gradient survey, south-central Colorado
Flight-line data and gravity grids with documentation.
Digital data and derivative products from a high-resolution aeromagnetic survey of the central San Luis basin, covering parts of Alamosa, Conejos, Costilla, and Rio Grande Counties, Colorado, and Taos County, New Mexico
Digital data, image files, and text files describing data formats and survey procedures for aeromagnetic data collected during a high-resolution aeromagnetic survey in southern Colorado and northern New Mexico during October, 2004
Digital aeromagnetic data and derivative products from a helicopter survey over the town of Blanca and surrounding areas, Alamosa and Costilla Counties, Colorado
Flight-line data, grids, and images derived from them
Digital data from the Great Sand Dunes and Poncha Springs aeromagnetic surveys, south-central Colorado
Two high-resolution aeromagnetic surveys in south-central Colorado compiled to assess the subsurface geologic framework of the San Luis basin for ground-water flow model construction, and to map concealed faults potentially related to geothermal resources
Geochronology Database for Central Colorado
Compilation of isotopic and fission track age determinations, some previously published. Data for the tephrochronology of Pleistocene volcanic ash, carbon-14, Pb-alpha, common-lead, and U-Pb determinations on uranium ore minerals are not included.
Fluorine, fluorite, and fluorspar in central Colorado
Distribution of fluorine in specific age-lithologic categories, ranging from precambrian metamorphic rocks to modern soils.
Geospatial database for regional environmental assessment of central Colorado
Study focusing on the effects of historical mining on Forest Service lands in this area.
Occurrence and variability of mining-related lead and zinc in the Spring River flood plain and tributary flood plains, Cherokee County, Kansas, 2009--11
One hundred years of historical mining has resulted in substantial ongoing input of cadmium, lead, and zinc into the environment. This surficial-soil sampling and coring study provides information needed to support remediation efforts.
Resource potential and geology of the Grand Mesa, Uncompahgre, and Gunnison (GMUG) National Forests and vicinity, Colorado
Multi-chapter report combining geologic, geochemical, geophysical, and mining activity data. Downloadable data for coal resource information only.
Hydrogeochemical investigations of historic mining districts, central western slope of Colorado, including influence on surface-water quality
Geochemical analysis of mine dumps, mill tailings, mine drainage, and surface waters indicate contamination from these historic mines is generally less than that asserted or suggested by some geochemical models
Geochemical results from stream-water and stream-sediment samples collected in Colorado and New Mexico
Data from a study intended to explore how well the chemical analysis of water and sediment in an area reflects that of the rock from which the sediments are eroded and through which the water flows.
Data report for the geologic and scenic quality evaluation of selected sand and gravel sites on the Wind River Indian Reservation, Wyoming
Geographic extent of sand and gravel deposits in this area as GIS data.
Geology and mineral resources of the Southwestern and South-Central Wyoming Sagebrush Focal Area, Wyoming, and the Bear River Watershed Sagebrush Focal Area, Wyoming and Utah
Whole-rock and sulfide-mineral geochemical data for samples from volcanogenic massive sulfide deposits of the Bonnifield district, east-central Alaska
The data consist of major- and trace-element whole-rock geochemical analyses and major- and trace-element analyses of sulfide minerals determined by electron microprobe and laser ablation–inductively coupled plasma–mass spectrometry (LA-ICP-MS) techniques
Geologic and geophysical maps of the El Casco 7.5′ quadrangle, Riverside County, southern California, with accompanying geologic-map database
In addition to geologic units and structural features, these data include gravity observations and horizontal gravity gradient information.
Geochemical Results of Lysimeter Sampling at the Manning Canyon Repository in the Mercur Mining District, Utah
This report presents chemical characteristics of transient unsaturated-zone water collected by lysimeter from the Manning Canyon repository site in Utah. Data collected by U.S. Geological Survey and U.S. Department of the Interior, Bureau of Land Manageme
Chemistry of Selected Core Samples, Concentrate, Tailings, and Tailings Pond Waters: Pea Ridge Iron (-Lanthanide-Gold) Deposit, Washington County, Missouri
This report examines potential sources of lanthanide elements [rare earth elements (REE)] with the objective of providing up-to-date geologic information regarding mineral commodities likely to have increased demand in the near term.
Geologic map of the Atlin quadrangle, southeastern Alaska
Geologic bedrock map of a mostly glacier covered quadrangle, northern southeastern Alaska, part of a long-term systematic effort to provide bedrock geologic and mineral-resource information for all of southeastern Alaska
Preliminary bedrock geologic map of the Seward Peninsula, Alaska, and accompanying conodont data
Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
Geologic and geophysical maps of the eastern three-fourths of the Cambria 30 x 60 degree quadrangle, central California Coast Ranges
Contains geologic, gravity anomaly, and aeromagnetic anomaly maps and the associated geologic and geophysical databases (ArcMap), as well as complete descriptions of the geologic map units and the structural relations in the mapped area.
Isostatic gravity map of the Monterey 30x60 minute quadrangle and adjacent areas, California
Gravity measurements to support regional mapping and hydrologic studies
Isostatic gravity map of the Point Sur 30 x 60 quadrangle and adjacent areas, California
Includes 802 gravity station measurements with isostatic, free-air, simple and complete Bouguer anomalies, and terrain correction.
Review of samples of water, sediment, tailings, and biota at the Little Bonanza mercury mine, San Luis Obispo County, California
Data from field sampling of mine tailings, wasterock, sediment, water, and biota at the mine in 2010. Results permit a preliminary assessment of the mining sources of Hg and associated chemicals that could produce elevated levels of monomethylmercury.
Magnetic map of the Irish Hills and surrounding areas, San Luis Obispo County, central California
Database includes new helicopter aeromagnetic data, point locations of the local maximum horizontal gradient derived from the aeromagnetic data, and physical property data.
Case study of the environmental signature of a recently abandoned, carbonate-hosted replacement deposit: The Clayton Mine, Idaho
Multi-element geochemical analysis of host rock, ore, mine waste, flotation-mill tailings, slag, stream sediments, creek and adit waters, and leachates of mine waste and mill tailings.
Stream-Sediment Geochemistry in Mining-Impacted Drainages of the Yankee Fork of the Salmon River, Custer County, Idaho
Analysis of stream sediments to assess the geochemistry, in particular the mercury and selenium contents, of mining-impacted sediments in the study area
Digital geologic map of the Spokane 1:100,000 quadrangle, Washington and Idaho; a digital data base for the 1990 N.L. Joseph map
Geologic units, structural features, and point measurements describing the earth characteristics of this area.
Stratabound copper-silver deposits of the Mesoproterozoic Revett Formation, Montana and Idaho with a section on databases and spatial-data files for the geology and mineral deposits of the Revett Formation
Includes deposits, occurrences, and prospects; drill core logs and measured sections; and spatial databases for geologic maps, untested exploration areas, and permissive tracts for undiscovered mineral deposits.
Geochemical analysis of soils and sediments, Coeur d'Alene drainage basin, Idaho: Sampling, analytical methods, and results
Chemical composition of sediments and soils are of interest because of the potential for human and wildlife health impacts from high metal contents due to over 100 years of mining activity.
Digital map of surficial geology, wetlands, and deepwater habitats, Coeur d'Alene river valley, Idaho
Details of materials and geologic environments in an area where a long history of mining has enriched stream sediments in silver, lead, zinc, arsenic, antimony and mercury, copper, cadmium, manganese, and iron.
Digital geologic map of the Rosalia 1:100,000 quadrangle, Washington and Idaho: A digital database for the 1990 S.Z. Waggoner map
Geoloic units and structural features
Lead-rich sediments, Coeur d'Alene River valley, Idaho; Area, volume, tonnage, and lead content: Surface-sediment geochemical data
Tables containing locations and lead concentrations of 998 surface-sediment geochemical sample sites
Geologic datasets for weights of evidence analysis in northeast Washington--4. Mineral industry activity in Washington, 1985-1997.
Tabular presentation of mineral activities for mining and exploration in Washington during 1985 to 1997.
Digital geologic map of Spokane County and vicinity, Washington and Idaho
Geologic data for Spokane County for use in future spatial analysis by a variety of users. These data will better enable Spokane County agencies to predict the likely occurrence of additional mineral lands, primarily containing sand, gravel, rock and clay
An aeromagnetic survey in Yellowstone National Park
Grids of total magnetic intensity for the park
Determination of premining geochemical background and delineation of extent of sediment contamination in Blue Creek downstream from Midnite Mine, Stevens county, Washington
Geochemical and radionuclide analyses of surface samples and cores taken near the outflow of this old uranium mine.
Isostatic gravity map with simplified geology of the Los Angeles 30x60 minute Quadrangle
Includes detailed point measurements of gravity
Preliminary potential-field constraints on the geometry of the San Fernando basin, southern California
Results of mathematical modeling of gravity and magnetic anomaly data to infer the geologic structure of the area
Gravity data along LARSE (Los Angeles Regional Seismic Experiment) line 2, southern California
Data taken across the San Fernando Basin and Transverse Ranges to help characterize the structure underlying this area
Geochemical and petrographic data for intrusions peripheral to the Big Timber Stock, Crazy Mountains, Montana
The Paleocene Fort Union Formation hosts a compositionally diverse array of Eocene plugs, dikes, and sills arrayed around the Eocene Big Timber stock in the Crazy Mountains of south-central Montana. The geochemistry and petrography of the sills have no
Characterization of mine waste at the Elizabeth copper mine, Orange County, Vermont
Preliminary information about the concentration, spatial distribution and mineral hosting of metals and other elements in solid materials at the Elizabeth copper mine after 50 years (or more) of weathering and oxidation.
Sequential extraction results and mineralogy of mine waste and stream sediments associated with metal mines in Vermont, Maine, and New Zealand
Results from sequential extraction experiments and the quantitative mineralogy for samples of stream sediments and mine wastes collected from metal mines.
Geochemical characterization of mine waste at the Ely Copper Mine superfund site, Orange County, Vermont
An environmental impact study is done for the abandoned Ely copper mine. The extent of contamination is studyed along with the type and chemical composition of the mine waste piles.
Geochemical Characterization of Mine Waste, Mine Drainage, and Stream Sediments at the Pike Hill Copper Mine Superfund Site, Orange County, Vermont: U.S. Geological Survey, in cooperation with the U.S. Environmental Protection Agency
Sampling procedures, analytical methodologies, and results to assess the potential for mine waste and drainage to have an adverse impact on aquatic ecosystems, on drinking- water supplies, and to human health
Surface-water hydrology and quality at the Pike Hill Superfund Site, Corinth, Vermont, October 2004 to December 2005
Synoptic water-quality and benthic macroinvertebrate sampling at 14 stream sites to characterize the quality of surface water in the watershed on a seasonal and spatial basis, as well as to assess the effects of wetlands on water quality.
Aquatic assessment of the Ely Copper Mine Superfund site, Vershire, Vermont
A wide variety of geochemical analyses show strong local impact on water quality in this area of historical copper mining.
Aeromagnetic surveying in Wisconsin 1977-98
Digital bedrock geologic map of the Ashland and northern part of the Ironwood 30' x 60' quadrangles, Wisconsin and Michigan
Geologic units and structural features, GIS data files
Preliminary integrated geologic map databases for the United States: Digital data for the generalized bedrock geologic map, Yukon Flats region, east-central Alaska
Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
Integrated investigations of environmental effects of historical mining in the Basin and Boulder mining districts, Boulder River watershed, Jefferson County, Montana
Geological, geochemical, hydrologic, and biological observations combined with geographic framework data, supporting a multidisciplinary assessment of the impact of historic mining in this area.
Ground geophysical study of the Buckeye Mine Tailings, Boulder watershed, Montana
Electromagnetic, resistivity, and magnetic surveys used to determine the extent of contamination in an abandoned mine area.
Schlumberger DC resistivity soundings in the Boulder watershed, Jefferson and Lewis and Clark counties, Montana
DC resistivity soundings were made to map subsurface lithologic, structural and hydrologic features important in controlling possible ground water contamination from mining activities and for design of remediation efforts.
Geochemical database for the Boulder Batholith and its satellitic plutons, southwest Montana
Geochemical analyses of Cretaceous igneous intrusions in order to establish the geologic framework for world-class mineral deposits of the Butte district
Preliminary integrated geologic map databases for the United States: Digital data for the reconnaissance geologic map of the lower Yukon River region, Alaska
Reconnaissance geologic map of the lower Yukon River region in southwest Alaska includes Quaternary surficial deposits on the delta plain and bedrock exposures in mountains within the delta plain and the uplands that border the delta plain.
Alaska resource data file: Arctic quadrangle
Descriptions of mines, prospects, and mineral occurrences in the Arctic quadrangle, Alaska
Alaska resource data file: Adak quadrangle
Descriptions of mines, prospects, and mineral occurrences in the Adak quadrangle, Alaska
Preliminary integrated geologic map databases for the United States: Digital data for the reconnaissance geologic map of the western Aleutian Islands, Alaska
Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
Potential mineral resources, Payette National Forest, Idaho; description and probabilistic estimation
Permissive tracts for a variety of types of mineral deposits, with information about deposits that have already been mined.
Uranium-lead zircon ages and Sr, Nd, and Pb isotope geochemistry of selected plutonic rocks from western Idaho
U-Pb geochronology and isotopic studies of select plutons across the Salmon River suture in western Idaho.
Particle size characterization of water-elutriated Libby amphibole 2000 and RTI International amosite
Morphological data on fibrous mineral particles from an old vermiculite mine that has been a subject of environmental health investigations
Examination of Libby, Montana, Fill Material for Background Levels of Amphibole from the Rainy Creek Complex Using Scanning Electron Microscopy and X-Ray Microanalysis
Sample locations and descriptions, with compositional analysis to constrain the natural background levels of fibrous amphiboles potentially derived from the nearby Rainy Creek Complex.
Aerial gamma-ray, Landsat TM, and digital elevation data, Big Bend area, Texas
This report presents the results of analyses and interpretation of aerial gamma-ray, Landsat TM, geologic, and digital elevation data of the Big Bend area in Texas.
Quality of water and sediment in streams affected by historical mining, and quality of mine tailings, in the Rio Grande/Río Bravo basin, Big Bend area of the United States and Mexico, August 2002
Geochemical data for stream water, sediments, and mine tailings in this area
Geologic map of Big Bend National Park, Texas
New geologic map to reflect mapping of late Cretaceous to Tertiary clastic sedimentary rocks, park-wide mapping of surficial deposits, and a newly revised volcanic stratigraphy.
Aerial gamma-ray survey for parts of Cameron, Hidalgo, and Willacy Counties, Texas
The USGS had an aerial survey flown over parts of Cameron, Hidalgo, and Willacy Counties in Texas. The aerial survey included measurements of the earth's magnetic field and of the radioactivity of the surface rocks and soils.
Radon in soils of parts of Cameron, Hidalgo, and Willacy Counties, Texas
Analysis of soil samples in the Texas borderland area
Bedrock geologic map of the Port Wing, Solon Springs, and parts of the Duluth and Sandstone 30' x 60' quadrangles, Wisconsin
This Report provides digital data (shapefiles and .e00 files) for the bedrock geology in the Port Wing, Solon Springs, and parts of the Duluth and Sandstone quadrangles in Wisconsin.
Bedrock geology and mineral resources of the Knoxville 1° x 2° quadrangle, Tennessee, North Carolina, and South Carolina
Digital format for the map plate in Bulletin 1979 (Robinson et al., 1991),Bedrock Geology and Mineral Resources of the Knoxville 1°x2° Quadrangle, Tennessee, North Carolina, and South Carolina.
Map showing areas with potential for talc deposits in the Gravelly, Greenhorn, and Ruby ranges and the Henrys Lake Mountains of southwestern Montana
Geologic data supporting mineral resource assessment
Map showing areas with potential for garnet resources in bedrock and placer in the Blacktail Mountains and the Gravelly, Greenhorn, Ruby, and Snowcrest ranges of southwestern Montana
Geological data in support of mineral resource assessment
Chromite deposits in central part of the Stillwater Complex, Sweet Grass County, Montana: A digital database for the geologic map of the east slope of Iron Mountain
Geologic map digitized from a paper copy of plate 10 from USGS Bulletin 1015-D (Howland, 1955)
A dataset of magnetic susceptibility, metalization, and alteration for samples from the Stinkingwater mining district, Absaroka Mountains, Wyoming
Magnetic susceptibility measured for 700 samples of drill core from thirteen drill holes in the porphyry copper-molybdenum deposit of the Stinkingwater mining district in the Absaroka Mountains, Wyoming
Geophysical surveys of Bear Lake, Utah-Idaho, September, 2002
Detailed bathymetry, lake-floor acoustic imaging, and sample characteristics to infer bottom sediment characteristics.
Preliminary Integrated Geologic Map Databases for the United States: Digital data for the geology of the southern Brooks Range, Alaska
Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
Airborne electromagnetic and magnetic geophysical survey data of the Yukon Flats and Fort Wainwright areas, central Alaska, June 2010
Study to estimate the 3-D distribution of permafrost, to evaluate the effectiveness of these methods at mapping permafrost geometry, and to better define the physical properties of the subsurface in discontinuous permafrost areas.
Aeromagnetic survey of Taylor Mountains area in southwest Alaska
Map and flight-line data, with documentation of the survey
Major- and trace-element concentrations in rock samples collected in 2006 from the Taylor mountains 1:250,000-scale quadrangle, Alaska
138 rock geochemistry samples collected during the 2006 field season were analyzed using the ICP-AES/MS42, ICP-AES10, fire assay, and cold vapor atomic absorption methods
Reconnaissance study of the Taylor Mountains pluton, southwestern Alaska
Major and trace element geochemistry for 10 rock samples whose locations are not specified, with data from Argon-Argon analysis supporting geochronological data.
Aqueous geochemical data from the analysis of stream-water samples collected in June and July 2006-Taylor Mountains 1:250,00-scale quadrangle, Alaska
Analyses of 72 water samples include pH, conductivity, water temperature, major cation and anion concentrations, trace-element concentrations, and dissolved organic-carbon concentrations.
Aqueous geochemical data from the analysis of stream-water samples collected in June and August 2008--Taylor Mountains 1:250,000- and Dillingham D-4 1:63,360-scale quadrangles, Alaska
Measurements on 92 samples, including pH, conductivity, water temperature, major cation and anion concentrations, and trace-element concentrations.
Preliminary integrated geologic map databases for the United States: Digital data for the geology of southeast Alaska
Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
Results from the analysis of 723 stream-sediment samples from the Stikine Geophysical Survey area within the Petersburg, Sumdum, Bradfield Canal, and Sitka quadrangles, southeastern Alaska
Small regional scale geochemical mineral exploration results from field studies in Duncan Canal, Zarembo Island, and western Etolin Island.
Aeromagnetic, gravity anomaly, and derivative maps of the Craig and Dixon Entrance 1°x3° quadrangles of southeastern Alaska
A simplified geologic map, raw gravity and magnetic data, with derivative products including depth-to-source and rock densities, with limited interpretations of the underlying geology, structures, and mineral resources.
Geologic and aeromagnetic maps of the Fossil Ridge area and vicinity, Gunnison County, Colorado
Geologic units, structural features, and aeromagnetic anomaly map of the area
Hydrogeochemical investigation of the Standard Mine vicinity, upper Elk Creek basin, Colorado
Ground- and surface-water samples were collected in order to characterize the local ground-water flow system, determine metal concentrations in local ground water, and understand factors controlling the discharge of metal-rich waters from the mine.
Geochronology and geology of late Oligocene through Miocene volcanism and mineralization in the western San Juan mountains, Colorado
New age determinations with descriptions of sample locations and analytical details.
Geochemistry of rock samples collected from the Iron Hill carbonatite complex, Gunnison county, Colorado
A study conducted collected 57 surface rock samples from nine types of intrusive rock to reexamine the chemistry and metallic content of the major rock units of the Iron Hill complex
Spring runoff water-chemistry data from the Standard Mine and Elk Creek, Gunnison County, Colorado, 2010
Periodic sampling of water during the spring of 2010 was carried out to understand the range and timing of variation in pH and metal concentration, and help evaluate variation in water quality during spring runoff.
Geology, geochemistry, and geophysics of the Fry Canyon uranium/copper project site, southeastern Utah - Indications of contaminant migration
Chemical analyses of water and sediment samples, images depicting resistivity.
Description and validation of an automated methodology for mapping mineralogy, vegetation, and hydrothermal alteration type from ASTER satellite imagery with examples from the San Juan Mountains, Colorado
Raster image files indicating the interpreted alteration and mineral groups inferred using the methodology.
Net acid production, acid neutralizing capacity, and associated geophysical, mineralogical, and geochemical characteristics of Animas River watershed rocks near Silverton, Colorado
Geochemical analysis of rock samples focusing on characteristics relevant to mine cleanup discussions
Net acid production, acid neutralizing capacity, and associated mineralogical and geochemical characteristics of Animas River watershed igneous rocks near Silverton, Colorado
Chemical analysis of altered volcanic rocks to determine their potential for neutralization of acid-rock drainage. Includes magnetic susceptibility measurements as well.
Temporal geochemistry data from five springs in the Cement Creek watershed, San Juan County, Colorado
Seasonal geochemical data intended to understand formation of ferricretes and to help understand the ground-water flow system.
Radionuclide data and calculations and loss-on-ignition, X-ray fluorescence, and ICP-AES data from cores in catchments of the Animas river, Colorado
Results from sediment cores collected during 1997-1999 oxbow lakes and beaver ponds to assess impact of historic mining and exposed mineral deposits on the quality of the water and the aquatic and riparian habitats.
Integrated investigations of environmental effects of historical mining in the Animas River watershed, San Juan county, Colorado
Major assessment of the environmental effects of historical mining in the Animas River watershed with GIS data files, tables, and plates.
Geochemical data from waters in Prospect Gulch, San Juan County, Colorado, that span pre- and post-Lark Mine remediation
Water samples near this abandoned mine were analyzed for specific conductance, pH, temperature, and dissolved oxygen with handheld field meters, and metals were analyzed using inductively coupled plasma-mass spectrometry.
Principal facts for gravity data collected in the southern Albuquerque Basin area and a regional compilation, central New Mexico
New data incorporated with existing data complete overall coverage of the basin, one of the largest associated with the Rio Grande rift.
Digital aeromagnetic data from the Sandoval-Santa Fe, Belen, and Cochiti airborne survey, covering areas in Rio Arriba, Sandoval, Santa Fe, Socorro, and Valencia Counties, New Mexico
Grids and flight-line data for three airborne geophysical surveys
Digital data from the northeast Tusas Mountains aeromagnetic survey, north-central New Mexico
Flight-line aeromagnetic observations with gridded data derived from them.
Hawai`i geologic map data
A GIS database of geologic units and structural features in Hawai`i, with lithology, age, data structure, and format written and arranged just like the other states.
Digital data from the Taos West aeromagnetic survey in Taos county, New Mexico
Digital data, image files, and text files describing data formats and survey procedures for an aeromagnetic survey covering the southwestern portion of Taos County west of the Town of Taos, New Mexico, conducted in October, 2006
Digital data from the Questa-San Luis and Santa Fe East helicopter magnetic surveys in Santa Fe and Taos Counties, New Mexico, and Costilla County, Colorado
Aeromagnetic data collected during an airborne geophysical survey.
Digital aeromagnetic data and derivative products from a helicopter survey over the town of Taos and surrounding areas, Taos County, New Mexico.
Flight-line data, grids, and images derived from them
High-resolution aeromagnetic survey to image shallow faults, Poncha Springs and vicinity, Chaffee county, Colorado
Survey to map concealed faults that may be related to geothermal resources, such as hot springs; data given are surface locations of faults interpreted from the survey.
Gamma-ray, magnetic, and topographic data for parts of the Colorado Front Range
Five geospatial grids from the NURE surveys, showing potassium, uranium, and thorium concentration, residual magnetic field, and digital elevation.
Isotopic ages of rocks in the northern Front Range, Colorado
Maps, tables, and GIS data for isotopic ages determined in the northern part of the study area.
Uranium in surface waters and sediments affected by historical mining in the Denver West 1:100,000 quadrangle, Colorado
Geochemical analysis of stream waters and sediments in mountainous areas immediately west of Denver, Colorado, to evaluate the concentration and distribution of uranium-bearing acid drainage originating from historical mines
Geologic and mineralogic controls on acid and metal-rich rock drainage in an alpine watershed, Handcard Gulch, Colorado
Mineralogical data on samples from the surface and from drill cores, with geological observations help to understand the hydrology and effects of geology on acid-rock drainage in a mineralized alpine watershed.
Helicopter electromagnetic and magnetic survey maps and data, East Poplar oil field area, August 2004, Fort Peck Indian Reservation, northeastern Montana
Grids, line data, and imagery derived from them covering the small study area.
Thickness of Santa Fe group sediments in the Española Basin south of Santa Fe, New Mexico, as estimated from aeromagnetic data
Interpretation of aeromagnetic data, with geologic structure, to infer thickness and estimate capacity of an aquifer.
Aeromagnetic interpretations for understanding the hydrogeologic framework of the southern Española Basin, New Mexico
Analysis of geophysical data, inferring geologic structure of the study area
Merged digital aeromagnetic data for the middle Rio Grande and southern Española Basins, New Mexico
Gridded data and images
Geophysical interpretations of the southern Española Basin, New Mexico, that contribute to understanding its hydrogeologic framework
Geophysical interpretation of the southern Española basin for the purpose of understanding the hydrogeologic framework including shallow faults, igneous units, and basement rocks
Lithogeochemistry of mineralized and altered rock samples from the northern Talkeetna Mountains, south-central Alaska
Chemical analysis of 201 samples of rocks thought to be altered or mineralized in an area containing numerous mines.
Aeromagnetic and aeromagnetic-based geologic maps of the Coastal Belt, Franciscan Complex, northern California
New aeromagnetic point observation data with grids as well
Geologic and geophysical framework of the Santa Rosa 7.5' quadrangle, Sonoma county, California
Geologic units, structural features, magnetic and gravity anomaly contours and radiometric ages of this area
Environmental impact of the Contact and Sonoma mercury mines on water, sediment, and biota in Anna Belcher and Little Sulphur Creek watersheds, Sonoma County, California
Data from field sampling of tailings, waste rock, sediment, and water at the mines, along with water, sediment, and biota in a pond and tributaries that drain from the mine area, to help assess the chemical hazards due to historic mining.
Helicopter electromagnetic and magnetic survey data and maps, northern Bexar County, Texas
Grids, images, and flight-line paths for magnetic and resistivity surveys
Geology and mineral resources of the North-Central Montana Sagebrush Focal Area: Chapter D in Mineral resources of the Sagebrush Focal Areas of Idaho, Montana, Nevada, Oregon, Utah, and Wyoming
Aeromagnetic surveys in Yukon Flats Alaska
Flight-line data from the aeromagnetic survey
Map showing extent of glaciation in the Eagle quadrangle, east-central Alaska
This map covers the Eagle 1:250,000-scale quadrangle in the northeastern part of the Yukon-Tanana Upland in Alaska. It shows the extent of five major glacial advances, former glacial lakes, and present fragmented terrace deposits related to the advances.
Magnetic susceptibilities measured on rocks of the Upper Cook Inlet, Alaska
Analysis of rock samples, with photos of sample localities
Principal facts for 463 gravity stations in the vicinity of Tangle Lakes, east-central Alaska
New gravity stations combined here with older measurements taken by other USGS survey trips
Chemical data for rock, sediment, biological, precipitate, and water samples from abandoned copper mines in Prince William Sound, Alaska
Report containing tables of geochemical data
Preliminary geologic map of the Chugach National Forest special study area, Alaska
Map at 1:63,360 scale shows the bedrock geology of a special study area within the Chugach National Forest, Alaska. Includes ARC/Info export files and graphics.
Geologic field notes, geochemical analyses, and field photographs of outcrops and rock samples from the Big Delta B-1 quadrangle, east-central Alaska
Major element oxide and trace element geochemical analyses, including those for gold, silver, and base metals, for representative rock units and for grab samples from quartz veins and mineralized zones within the quadrangle
Geochemical data for stream-sediment, surface-water, rock, and vegetation samples from Red Mountain (Dry Creek), an unmined volcanogenic massive sulfide deposit in the Bonnifield district, Alaska Range, east-central Alaska
Geochemical data for stream sediment, surface-water, rock, precipitate, and vegetation samples from Red Mountain
Helicopter electromagnetic and magnetic survey data and maps, Seco Creek area, Medina and Uvalde Counties, Texas
Airborne geophysical data and a summary of the hydrologic application.
Aeromagnetic survey of Medina and Uvalde Counties, Texas
Flight-line data, flight-line and aeromagnetic anomaly map images
Distribution of igneous rocks in Medina and Uvalde counties, Texas, as inferred from aeromagnetic data
High resolution aeromagnetic survey used to infer the locations of igneous rock bodies in the area, which are provided in GIS data files
Three-dimensional geologic model of complex fault structures in the upper Seco Creek area, Medina and Uvalde counties, south-central Texas
Data sets include drill-hole from core and geophysical logs, surface geology and elevation, and helicopter electromagnetic survey data. The model may be explored and .jpg or .tiff images or using specialized software provided.
Description of digital aeromagnetic data collected north and west of Albuquerque, New Mexico
Grids and images depicting the data
Major- and trace-element concentrations in soils from two geochemical surveys (1972 and 2005) of the Denver, Colorado, metropolitan area
Analyses of about 900 samples by ICP-MS, ICP-AES, and hydride generation-atomic absorption spectrometry. The samples collected in 2005 were also analyzed by a cold vapor-atomic absorption method for mercury.
Field demonstrations of five geophysical methods that could be used to characterize deposits of alluvial aggregate
Data from seismic reflection and refraction, electromagnetic sounding, and resistivity profiling in a study area in Indiana. Exact location is not provided.
Aerial magnetic, electromagnetic, and gamma-ray survey, Berrien county, Michigan
Maps, grids, and flight-line databases of a detailed aerial survey and maps and grids of satellite data
Time-domain electromagnetic soundings near Antioch, Illinois,and Berrien Springs, Michigan
Study to help constrain 3-dimensional geologic maps of surficial materials in these glacial deposits
Geophysical investigation of Red Devil mine using direct-current resistivity and electromagnetic induction, Red Devil, Alaska, August 2010
This large producer of mercury operated from 1933 to 1971. As part of remediation work, this survey used electromagnetic methods to study subsurface resistivity.
High resolution, low altitude aeromagnetic and electromagnetic survey of Mount Rainier
Flight-line and gridded data, with description of methodology and interpretation
Puget Sound (Washington) aeromagnetic maps and data
Gridded data and maps for individual quadrangles and for the entire compilation
Revised digital aeromagnetic data for areas in and adjacent to the National Petroleum Reserve Area (NPRA), North Slope, Alaska
Redigitized and corrected data from a previously published study
The Longview/Lakeview barite deposits, southern National Petroleum Reserve, Alaska (NPRA); potential-field models and preliminary size estimates
Geophysical modeling used to study mineral deposit geometry. Includes 227 new gravity stations.
Mercury geochemistry of gold placer tailings, sediments, bedrock, and waters in the lower Clear Creek area, Shasta County, California; report of investigations, 2001-2003
Total mercury and methylmercury measured in sediments, tailings, and water in an area where historical gold mining has occurred; proposed habitat restoration work may release some of the mercury that is currently buried there.
Map showing geology, structure, and geophysics of the central Black Hills, South Dakota
This 1:100,000-scale digital geologic map details the complex early Proterozoic granitic rocks, early Proterozoic supracrustal metamorphic rocks, and Archean crystalline basement of the Black Hills.
Mineralogic causes of variations in magnetic susceptibility of late Pleistocene and Holocene sediment from Great Salt Lake, Utah
Results of magnetic susceptibility (MS) measurements and magnetic mineralogy of sediments sampled in three cores from the south basin of Great Salt Lake
Available sand and gravel resources in southern New Hampshire
Estimates thickness of sand and gravel resources available in this broad area using geology, topography, land cover, and ground-water level.
Estimated gravel resources of the Soucook River valley, Loudon, New Hampshire, 7.5' Quadrangle using improved techniques for assessing gravel resources in glaciofluvial deposits
Images and text from a poster session (Geological Society of America Northeastern Section) showing methodology and results for an example
Application of ground penetrating radar to estimate sand and gravel resources near Bow, southern New Hampshire
Includes application-specific radar data files.
Solid-phase data from cores at the proposed Dewey Burdock uranium in-situ recovery mine, near Edgemont, South Dakota
Geochemical and mineralogical analysis of uranium-bearing sandstone in order to help understand mineral deposits of this type.
Geochemical data from groundwater at the proposed Dewey Burdock uranium in-situ recovery mine, Edgemont, South Dakota
Groundwater geochemistry data from samples that were collected in June 2011 to better understand the hydrogeologic system in the area surrounding the proposed mine site.
Online files for acid deposition sensitivity map
GIS data files Acid Deposition Sensitivity of the Southern Appalachian Assessment Area. Susceptibility to acid deposition from air pollution is categorized as low, medium, or high for each area.
Geologic Map of the Great Smoky Mountains National Park Region, Tennessee and North Carolina
Bedrock and surficial geologic units and structural features in this area
Geology and mineral deposits of the Keweenaw Peninsula and vicinity, Michigan
Geospatial data and tabular data on the geology, structure, mines and mineral deposits, including lithology, age, tectonic setting, and stratigraphy.
Bedrock soil and lichen geochemistry from Isle Royale National Park, Michigan
Geochemical analyses conducted as part of a larger study of the Midcontinent Rift in the Lake Superior region.
Reconnaissance geologic map of the Duncan Canal/Zarembo Island area, southeastern Alaska
Updated bedrock geologic mapping of the area incorporating a recent airborne geophysical survey, new field work, fossils, radiometric ages, and geochemical signatures. Includes GIS data.
Concentrations and bioaccessibility of metals in vegetation and dust near a mining haul road, Cape Krusenstern National Monument, Alaska
Samples of surficial materials analyzed for aluminum, barium, cadmium, lead, and zinc concentrations.
Helicopter electromagnetic and magnetic geophysical survey data, Oakland, Ashland, and Firth study areas, eastern Nebraska, March 2007
Electrical resistivity depicted in georeferenced grids and maps, representing different approximate depths of investigation for each area. The range of subsurface investigation is comparable to the depth of shallow aquifers.
Gravity investigations of the Chickasaw National Recreation Area, south-central Oklahoma
Gravity anomaly with physical property measurements in support of structural geologic investigation
Helicopter electromagnetic and magnetic geophysical survey data, Hunton anticline, south-central Oklahoma
Flight line data, grids, and inversions for these surveys are intended to help understand shallow groundwater and develop groundwater resource plans for the aquifer.
Geochemical and mineralogical characterization of the abandoned Valzinco (lead-zinc) and Mitchell (gold) mine sites prior to reclamation, Spotsylvania County, Virginia
Geochemical data for all solid sample media, along with mineralogical data, and results of weathering experiments on Valzinco tailings and field experiments on sediment accumulation in Knights Branch.
Geochemical characterization of drainage prior to reclamation at the abandoned Valzinco mine, Spotsylvania County, Virginia
Geochemical analysis of water samples to provide a pre-reclamation assessment of seasonal variations of acid and metal concentrations in Knight's Branch help evaluate the reclamation project.
Gravity study of the Guernsey landfill site, Guernsey, Wyoming
Gravity measurements and surveyed topography data
Results of electrical resistivity data collected near the town of Guernsey, Platte county, Wyoming
A study to investigate subsurface geologic conditions as they relate to ground-water flow in an abandoned landfill.
Helicopter electromagnetic data from Everglades National Park and surrounding areas, Florida, collected 9-14 December 1994
Survey to determine location of the freshwater-saltwater boundary in a coastal area.
Water and sediment chemical data and data summary of samples collected in 1999 and 2001 in the Goodpaster River Basin, Big Delta B-2 Quadrangle, Alaska
Aeromagnetic surveying in Wisconsin 1998-99
Aeromagnetic flight-line measurements and gridded anomaly data
Regional geochemical results from the reanalysis of NURE stream sediment samples--Eagle 3 degree quadrangle, east-central Alaska
Reanalyses of NURE sediment samples in the Fortymile mining district, east-central Alaska. Provides new lower limits for some elements. Compares data from newer analytical techniques with original NURE data.
Geochemical data for core and bottom-sediment samples collected in 2007 from Grand Lake o' the Cherokees, northeast Oklahoma
In this area of historical lead-zinc mining activity, studies such as this help to assess the possibility of human exposure to cadmium and lead through eating fish.
Geology, geochemistry, and genesis of the Greens Creek massive sulfide deposit, Admiralty Island, southeastern Alaska
This metal ore deposit formed over a period of time in which its tectonic setting was changing, consequently it shows a range of characteristics typical of several different types of deposits. Rock geochemistry data are provided in tabular form.
Helicopter electromagnetic and magnetic geophysical survey data, portions of the North Platte and South Platte Natural Resource Districts, western Nebraska, May 2009
Geophysical surveys to map shallow hydrogeologic features of the southwestern part of the Sand Hills that contain a mix of fresh to saline lakes.
Airborne electromagnetic mapping of the base of aquifer in areas of western Nebraska
Gridded data used to revise base of aquifer, with supporting elevation data.
Ni-Co laterite deposits of the world-database and grade and tonnage models
Location, type, mineralogy, name, tonnage and grade, and geological setting for 120 deposits of this type. The US has no active nickel mines or nickel reserves.