Aeromagnetic surveying

Mapping of the earth's magnetic field with the use of airborne electronic magnetometers.
Subtopics:
(none)


Results listed by similarity [list alphabetically]
Magnetic anomaly map of North America

Airborne measurement of the earth's magnetic field over all of North America provides gridded data describing the magnetic anomaly caused by variations in earth materials and structure.

Info
Compiling magnetic databases

Explains the process used to compile and analyze data from diverse magnetic surveys of an area to produce a consistent synoptic data set portraying the magnetic anomalies of the region.

Info
Introduction to potential fields: magnetics

Explanation of the Earth's magnetic field and how USGS measures it. Defines magnetic anomaly, induced and remanent magnetism in rocks, and describes magnetic anomaly maps.

Info
Aeromagnetic surveying in Wisconsin 1977-98

Info
Aeromagnetic surveying in Wisconsin 1998-99

Aeromagnetic flight-line measurements and gridded anomaly data

Info
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

Info
Puget Sound (Washington) aeromagnetic maps and data

Gridded data and maps for individual quadrangles and for the entire compilation

Info
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.

Info
Aeromagnetic and aeromagnetic-based geologic maps of the Coastal Belt, Franciscan Complex, northern California

New aeromagnetic point observation data with grids as well

Info
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.

Info
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

Info
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.

Info
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.

Info
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.

Info
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.

Info
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.

Info
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.

Info
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.

Info
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.

Info
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.

Info
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.

Info
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.

Info
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.

Info
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

Info
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.

Info
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.

Info
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.

Info
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.

Info
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.

Info
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.

Info
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.

Info
Aeromagnetic and aeroradiometric data acquired over parts of the Trans-Pecos region of West Texas and Southern New Mexico

Magnetic anomaly and radiometric data for this area, to understand the geological structure and processes controlling the presence and distribution of alkaline igneous rocks that may be enriched in rare earth elements. Data are provided in CSV, GeoTiff, and Geosoft XYZ (flight-line) formats, packaged using the compressed 7-zip format.

Info
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.

Info
Aeromagnetic and gravity data over the central Transantarctic Mountains (CTAM), Antarctica

Gridded and tabular magnetic data and gravity station observations. Maps depicting the data are included in the report.

Info
Aeromagnetic and gravity surveys in Afghanistan

Collection of historical gravity and aeromagnetic data in Afghanistan (1911 through 1967)

Info
Aeromagnetic data centered over Skelton Neve, Antarctica

Gridded aeromagnetic and ground-based gravity station data

Info
Aeromagnetic Data of Alturas, California, and Surrounding Areas

Aeromagnetic survey data giving the calculated magnetic anomaly. Data are provided in CSV format.

Info
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

Info
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.

Info
Aeromagnetic map of part of northwestern Wisconsin and adjacent areas

Info
Aeromagnetic survey in Afghanistan

Digital files and descriptions of airborne and ground collected magnetic data in Afghanistan

Info
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.

Info
Aeromagnetic survey of Dillingham Area in Southwest Alaska

Gridded survey data with summary map images.

Info
Aeromagnetic survey of Medina and Uvalde Counties, Texas

Flight-line data, flight-line and aeromagnetic anomaly map images

Info
Aeromagnetic survey of the Amargosa desert, Nevada and California

Grid data files along with maps in PDF and PostScript accompany this report

Info
Aeromagnetic surveys in Afghanistan: An updated website for distribution of data

Gridded aeromagnetic anomaly data, along with aeromagnetic observations obtained during 2008.

Info
Aeromagnetic surveys in the Anchorage, Iliamna, and Tyonek quadrangles, Alaska

Gridded data from aeromagnetic surveys

Info
Aeromagnetic surveys in Yukon Flats Alaska

Flight-line data from the aeromagnetic survey

Info
Alaska digital aeromagnetic database description

Basic aeromagnetic data and other airborne survey information for any region of Alaska. Flight-line point information, not grids.

Info
An aeromagnetic survey in Yellowstone National Park

Grids of total magnetic intensity for the park

Info
Central west Antarctica aeromagnetic data

Grids and map images for separate surveys and combined compilation

Info
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.

Info
Description of digital aeromagnetic data collected north and west of Albuquerque, New Mexico

Grids and images depicting the data

Info
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

Info
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

Info
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

Info
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

Info
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

Info
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

Info
Digital data from the northeast Tusas Mountains aeromagnetic survey, north-central New Mexico

Flight-line aeromagnetic observations with gridded data derived from them.

Info
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

Info
Digitized Aeromagnetic Datasets for the Conterminous United States, Hawaii, and Puerto Rico

Aeromagnetic anomaly values digitized from older surveys

Info
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

Info
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.

Info
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.

Info
Geophysical and geologic maps of Mountain Pass and vicinity, California and Nevada

U.S. Geological Survey Scientific Investigations Map 3412 is a series of products that consists of geophysical and geologic maps of Mountain Pass and vicinity, California. Maps A and B (red outline in above map image) are gravity and aeromagnetic maps, re

Info
Helicopter electromagnetic and magnetic survey data and maps, northern Bexar County, Texas

Grids, images, and flight-line paths for magnetic and resistivity surveys

Info
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.

Info
High Resolution Aeromagnetic Survey, Villa Grove, Colorado, USA, 2011

Data from a helicopter magnetic survey in this area to understand the nature of aquifers, the potential for geothermal energy resources, the likelihood of seismic hazards, and the geology of the northern Rio Grande rift. Data are provided in GXF grid and CSV formats.

Info
High resolution, low altitude aeromagnetic and electromagnetic survey of Mount Rainier

Flight-line and gridded data, with description of methodology and interpretation

Info
High-Resolution Aeromagnetic Survey of Mountain Pass, California

Aeromagnetic survey data from this area flown in 2016. This helicopter survey was flown at a flight-line spacing of 100 and 200 m, nominal elevation above ground of 70 m, for about 1,814 line-kilometers. Data are provided in GXF and shapefile formats.

Info
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.

Info
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.

Info
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.

Info
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.

Info
Merged digital aeromagnetic data for the middle Rio Grande and southern Española Basins, New Mexico

Gridded data and images

Info
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.

Info
Missouri Breaks Project, Montana - Digitized aeromagnetic data

Previously created but unpublished map sheets were scanned, registered, and the contours were digitized. The point data released here were extracted from the digitized contour lines and include: latitude, longitude, and magnetic-field value (gamma). Data are provided in a fixed-field columnar text format.

Info
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.

Info
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.

Info
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.

Info
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.

Info
Preliminary aeromagnetic anomaly map of California

Map showing magnetic anomaly of California composed by merging and editing data from 123 distinct surveys conducted previously.

Info
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.

Info
Seven aeromagnetic surveys in California and Nevada

Grid and flight-line data files provided by the geophysical survey contractors.

Info
Six aeromagnetic surveys in California, Nevada, and Arizona

Grid and flight-line data files provided to USGS by contract geophysical surveyors

Info
Six aeromagnetic surveys in Nevada and California

Gridded data for aeromagnetic surveys with contractors' reports describing the data collection

Info
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.

Info
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.

Info
Three aeromagnetic surveys in south central Arizona

Grids and flight-line data for the surveys of this area

Info
Updated aeromagnetic and gravity anomaly compilations and elevation-bathymetry models over Lake Superior

New gravity and magnetic compilations and elevation-bathymetry models compiled for the Lake Superior region, providing continuous sets of observations for geologic interpretations spanning political boundaries such as US States and the US-Canada border where bedrock geology is largely concealed beneath glacial deposits and surface water. Data are provide in GeoTiff, GXF, and CSV (for gravity station data) formats.

Info
A helicopter-borne magnetic survey over Dixie Valley geothermal field, Nevada

Gridded data from helicopter study of shallow geologic structures

Info
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

Info
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.

Info
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.

Info
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

Info
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.

Info
Airborne electromagnetic and magnetic survey data and inverted resistivity models, Cedar Rapids, Iowa, May 2017

Airborne electromagnetic and magnetic survey data were collected in 2017 along 347 line kilometers. Includes processed AEM and magnetic data and inverted resistivity depth sections. Data are provided in CSV format.

Info
Airborne electromagnetic and magnetic survey data and inverted resistivity models, western Yukon Flats, Alaska, February 2016

Airborne electromagnetic and magnetic survey data were collected during 2016 along 300 line kilometers in this area, flown at a nominal flight height of 30 m above terrain along widely spaced reconnaissance lines. Includes raw and processed AEM data, laterally-constrained inverted resistivity depth sections along all flight lines, and unprocessed and processed magnetic data. Data are provided in CSV format.

Info
Airborne electromagnetic and magnetic survey data from the western Hualapai Indian Reservation near Grand Canyon West and Peach Springs, Arizona, 2018

Airborne electromagnetic (AEM) and magnetic survey data along 1,637 line-km at a nominal flight height of 30m above terrain (averaging 53m), with nominal line spacing 1 km or 4 km. Data provided are minimally processed AEM and magnetic measurements, fully processed AEM data were used to develop an included resistivity model.

Info
Airborne electromagnetic and magnetic survey data in Big Cypress National Preserve and Everglades National Park, 2001

Airborne electromagnetic (AEM) and magnetic survey data, a total of 3065 line-kilometers, collected during October 2001 with line spacing 400m and nominal altitude of 30m. Includes raw and processed AEM data and magnetic data, in CSV format.

Info
Airborne electromagnetic and magnetic survey data of the San Juan-Silverton Caldera complex, Silverton, Colorado, 2019

Airborne electromagnetic and magnetic survey data were collected during 2019 along 1,467 line-kilometers in this area. The survey was flown at a mean flight height of 140 meters (m) above terrain and line spacings ranging from 150 m to 600 m. Data are provided in CSV and shapefile formats.

Info
Airborne electromagnetic and magnetic survey data, Big Sioux aquifer, October 2015, Sioux Falls, South Dakota

Airborne electromagnetic (AEM) and magnetic survey data collected in 2015 along 769 line-kilometers including raw and processed AEM and magnetic data, processed AEM resistivity-depth inversions. Data are provided in CSV format.

Info
Airborne electromagnetic and magnetic survey data, East Poplar Oil Field and surrounding area, October 2014, Fort Peck Indian Reservation, Montana

Airborne electromagnetic and magnetic survey data were collected in 2014 in this area. The survey was flown at a nominal flight height of 30 m above terrain, line spacing of 200 m with a smaller area at 100 m. Includes raw and processed AEM data and spatially-constrained inverted resistivity depth sections, and unprocessed and processed magnetic data that has been drift corrected, leveled, and draped to terrain. Data are provided in CSV format.

Info
Airborne electromagnetic and magnetic survey data, Iliamna Volcano, Alaska, June 2012

Airborne electromagnetic and magnetic survey data in 2012 along 556 line-kilometers over this volcano flown at a nominal flight height of 30 meters (m) above terrain with a nominal spacing of 250 m. Data are provided in CSV and GeoTiff formats.

Info
Airborne electromagnetic and magnetic survey data, northeast Wisconsin

Airborne electromagnetic and magnetic survey data collected during 2021 over 3,170 line kilometers with nominal flight height of 30 - 40 m above terrain and nominal line spacing of 0.5 miles. Data are provided in Geosoft database, Geosoft grid, GeoTiff, Geosoft map, and netCDF formats.

Info
Airborne electromagnetic and magnetic survey data, Silverton, Colorado, 2019

Airborne electromagnetic and magnetic survey data collected during April and May 2019 along 1,467 line-kilometers in this area. Data are provided in netCDF format.

Info
Airborne electromagnetic and magnetic survey data, southeastern San Joaquin Valley near Cawelo, California, 2016

Airborne electromagnetic (AEM) and magnetic survey data to support groundwater salinity mapping and hydrogeologic framework development. Data are provided in CSV format.

Info
Airborne electromagnetic and magnetic survey data, Stillwater Complex, Montana, May 2000 (ver. 2.0, June 2020)

Data from a helicopter-borne electromagnetic and magnetic survey flown over this area area in 2000. Nominal elevation of the sensor was 60 meters. Survey coverage comprises 1,914 line kilometers. Data are provided in CSV format.

Info
Airborne electromagnetic and magnetic survey, southwestern San Joaquin Valley near Lost Hills, California, 2016

Airborne electromagnetic (AEM) and magnetic survey data in this area to aid groundwater studies. Includes inverted resistivity model. Data are provided in CSV, plotted sections provided in PDF.

Info
Airborne Electromagnetic and Magnetic Survey, Yellowstone National Park, 2016 - Minimally Processed Data

Airborne electromagnetic and magnetic survey data were collected during 2016 along 4,212 line-kilometers over this area. The survey was flown with a nominal line spacing of 450 meters or less, and mean flight height about 48 m providing depth of investigation about 500m. Data are provided in CSV format, flight lines in shapefile format.

Info
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.

Info
Airborne Electromagnetic Survey Processed Data and Models Data Release, Yellowstone National Park, Wyoming, 2016

Airborne electromagnetic (AEM) and magnetic survey data were collected in 2016 along 4,212 line-kilometers over this area as part of a study of the subsurface geologic structure and geothermal and groundwater resources of Yellowstone National Park. Data are provided in CSV format.

Info
Airborne electromagnetic, magnetic, and radiometric survey of the Mississippi Alluvial Plain, Mississippi Embayment, and Gulf Coastal Plain, September 2021 - January 2022

Airborne electromagnetic, magnetic, and radiometric data were acquired along 27,204 line-kilometers over this area. Data are provided in netCDF format.

Info
Airborne electromagnetic, magnetic, and radiometric survey of the Mississippi Alluvial Plain, November 2018 - February 2019

Airborne electromagnetic, magnetic, and radiometric data were acquired in 2018-2019 along 16,816 line-kilometers flown at a nominal sensor flight height of 30 m above terrain with 6- to 12-kilometer spaced east-west flight lines to understand subsurface geologic structure and inform hydrologic models. Data are provided in CSV and GXF grid formats. Flight lines are provided in shapefile format.

Info
Airborne electromagnetic, magnetic, and radiometric survey of the Mississippi Alluvial Plain, November 2019 - March 2020

Airborne electromagnetic, magnetic, and radiometric data were acquired from 2019 to 2020 along 24,030 line-kilometers over the Mississippi Alluvial Plain. Survey was flown at a nominal height of 120 m above terrain with 6-kilometer spaced east-west flight lines. Data are provided in ASEG-GDF2 format.

Info
Airborne electromagnetic, magnetic, and radiometric survey, Shellmound, Mississippi, March 2018

Airborne electromagnetic, magnetic, and radiometric data were acquired in 2018 along 2,364 line-kilometers in this area at anominal sensor flight height of 30 m above terrain with 250 to 1,000-meter spaced flight lines. Data are provided in GXF grid, CSV, and GeoTiff formats.

Info
Airborne electromagnetic, magnetic, and radiometric survey, upper East River and surrounding watersheds near Crested Butte, Colorado, 2017

Airborne electromagnetic, magnetic, and radiometric data collected in 2017 over 1,984 line-kilometers in this area. Data include inverted resistivity and IP models as well. Data are provided in CSV format.

Info
Airborne Geophysical Survey Inventory of the Conterminous United States, Alaska, Hawaii, and Puerto Rico (ver. 3.0, November 2021)

Compilation of airborne geophysical surveys (magnetic, radiometric, and electromagnetic) with links, for each survey to the data, metadata, and preview images. Includes a measure of quality indicating which surveys are likely most useful for investigations of subsurface mineral deposits. Data are provided in Esri file geodatabase, shapefile, and CSV formats.

Info
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.

Info
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.

Info
Airborne Geophysical Surveys over the 2011 Mineral, Virginia Earthquake Area

Gravity, magnetic, and radiometric data obtained in airborne surveys conducted in 2012 with a flight line spacing of 200m and nominal height above ground 125m. Data are provided in GXF grid, GeoTiff, and CSV formats.

Info
Airborne Geophysical Surveys over the Eastern Adirondacks, New York State

Airborne geophysical surveys were conducted in this area in 2015 with a nominal survey height above ground of 200 meters and flight line spacing 250 meters. Includes magnetic and radiometric (gamma spectrometry) data from those surveys. Data are provided in Geotiff and CSV formats.

Info
Airborne horizontal magnetic gradient and radiometric survey over parts of southeast Missouri, southern Illinois and western Kentucky - The Gap survey, 2021

Digital flight line data for a high-resolution horizontal magnetic gradient and radiometric survey over this area. Data are provided in netCDF, GeoTiff, and CSV formats,

Info
Airborne magnetic and radiometric survey of the southeast Mojave Desert, California and Nevada

Digital flight-line aeromagnetic and aeroradiometric survey data over of the southeast Mojave Desert, parts of California and Nevada. Data files are provided in CSV as well as Geosoft binary database and grid exchange format (GXF).

Info
Airborne magnetic and radiometric survey of the Wet Mountains and surrounding region, Custer and Fremont Counties, south-central Colorado, 2021

Digital flight-line and gridded data for a high-resolution airborne magnetic and radiometric survey of this area. A total of 17,032 kilometers were flown along the lines, covering a 2,200 square-kilometer irregular area.

Info
Airborne magnetic and radiometric survey over northwest Arkansas, 2019-2020

Digital flight line data for a high-resolution magnetic and radiometric survey over an area of northwest Arkansas. Data files in CSV format, with GeoTiff as well.

Info
Airborne magnetic and radiometric survey, Boulder Batholith region, Montana, 2022

Digital flight line data for a high-resolution airborne magnetic and radiometric survey over this area to support geologic mapping and characterization of mineral resource potential. A total of 34,041-line km of magnetic and radiometric data were acquired over an irregular-shaped area of 6178 km2. Data are provided in CSV, netCDF, and GeoTIFF formats.

Info
Airborne magnetic and radiometric survey, Charleston, South Carolina and surrounds, 2019

Digital flight line data for a high-resolution airborne magnetic and radiometric survey over Charleston, South Carolina and the surrounding region. Data packages in CSV format, TIFF images provided as well.

Info
Airborne magnetic and radiometric survey, Columbia, South Carolina and surrounds, 2020

Digital flight line data for a high-resolution airborne magnetic and radiometric survey with goals of better understanding placer deposits containing critical mineral resources titanium, zirconium, and rare earth elements and of imaging the crystalline basement partly buried beneath Atlantic Coastal Plain sediments. Data are provided in CSV (magnetic) and netCDF (radiometric) formats as well as GeoTIFF images.

Info
Airborne magnetic and radiometric survey, Idaho Cobalt Belt, Central Idaho, 2021 - Magnetic and Radiometric Data

Digital flight line data for a high resolution magnetic and radiometric survey over this area. Data are provided in CSV format.

Info
Airborne magnetic and radiometric survey, Ironton, Missouri area

Digital flight line data for a high resolution horizontal magnetic gradient and radiometric survey over this area. Flight line spacing was 300 m, mean terrain clearance was 140 m. Includes flight line data for the magnetic gradient survey, flight line data for the radiometric survey and a report describing the survey parameters, field operations, quality control and data reduction procedures. Data are provided in CSV format, flight lines are provided in shapefile format.

Info
Airborne magnetic and radiometric survey, Munsungun region in northern Maine, 2021

Digital flight line data for a high-resolution airborne magnetic and radiometric survey over this area to better understanding volcanogenic massive sulfide mineral deposits, sediment hosted manganese deposits, and their surrounding geologic framework. Data are provided in CSV and GeoTiff formats.

Info
Airborne magnetic and radiometric survey, northwestern Minnesota, 2021

Digital flight line data for a high-resolution airborne magnetic and radiometric survey of this area. A total of 40,139-line km of magnetic and radiometric data were acquired over an irregular-shaped area of 9140 sq km. Data are provided in CSV, GeoTIFF, and Geosoft formats.

Info
Airborne magnetic and radiometric survey, southeast Missouri and western Illinois, 2018-2019

Digital flight line data for a high-resolution horizontal magnetic gradient and radiometric survey over an area of southeast Missouri and western Illinois. Data are provided in CSV and GeoTiff formats.

Info
Airborne magnetic and radiometric survey, southeastern Illinois, western Kentucky, and southern Indiana, 2019

Digital flight line data for a high-resolution magnetic and radiometric survey over an area of southeast Illinois, western Kentucky, and southern Indiana. Data are provided in CSV and GeoTiff formats.

Info
Airborne magnetic and radiometric survey, Virginia and North Carolina Fall Zone, 2021

Digital flight line data for a high-resolution airborne magnetic and radiometric survey over this area. Data are provided in CSV and GeoTIFF formats.

Info
Airborne magnetic survey over northeast North Dakota, 2000-2001

High-resolution, high-sensitivity aeromagnetic data to assess the area for anomalies and magnetic features pertaining to the local geology. Flight lines were spaced 0.25 miles (400 meters) apart in an east-west alignment. Data are provided in CSV and GeoTIFF formats.

Info
Airborne magnetic survey, Iron Mountain-Chatham region, central Upper Peninsula, Michigan, 2018

Digital flight line data for a high-resolution magnetic survey with line spacing 150 meters and nominal terrain clearance 80 meters over most of the study area. Data are provided as Geosoft databases and grids. Data over two small areas (less than 1 sq km combined) were redacted because those areas include multiple tracts of Native American lands.

Info
Airborne Magnetic Survey, Michigan Upper Peninsula Area, 2008

Digital flight line data from a high-resolution magnetic survey over this area. The survey was flown in 2008 by Aeroquest under contract to Kennecott Eagle Minerals Company using a fixed-wing aircraft with a magnetometer mounted in a tail stinger. The USGS has obtained this 66,074 line km subset of the survey dataset for public release. Data are provided in Geosoft database and CSV formats.

Info
Airborne Magnetic Total-Field Survey, Iron Mountain-Menominee Region, Michigan-Wisconsin, USA

Airborne magnetic survey data collected from this area to better understand the lithology and structure of exposed and concealed Precambrian rocks in support of mineral resource investigations. Results are provided in Geosoft database, grid exchange format, GeoTiff, and CSV.

Info
Airborne Magnetic Total-Field Survey, Manchester Region, Iowa, USA

Airborne magnetic survey data collected from this area to understand Precambrian rocks concealed under Paleozoic sedimentary rocks in northeast Iowa. Data are provided in GXF grid and CSV formats. Flight lines are provided in shapefile format.

Info
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.

Info
Crustal Architecture Beneath the Southern Midcontinent (USA) -- Data Grids and 3D Geophysical Models

Regional grid files and 3D voxel models were used to study crustal architecture. Includes grid files consist of surface grids used in the inversions, and calculated geophysical data grids produced by the inversions. Data are provided in GOCAD voxel and GXF grid formats.

Info
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.

Info
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

Info
Earth MRI data acquisition projects

Geological, geophysical, geochemical, or lidar data acquisition projects funded by the Earth Mapping Resource Initiative (Earth MRI) pertaining to the study of critical mineral resources in the US.

Info
Geological and geophysical data for a three-dimensional view—Inside the San Juan and Silverton Calderas, Southern Rocky Mountains Volcanic Field, Silverton, Colorado

<h1>Introduction</h1>The San Juan-Silverton caldera complex located near Silverton, Colorado, in the Southern Rocky Mountains volcanic field is an ideal natural laboratory for furthering the understanding of shallow-to-deep volcanic-related mineral system

Info
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.

Info
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.

Info
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

Info
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.

Info
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

Info
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.

Info
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

Info
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.

Info
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

Info
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.

Info
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.

Info
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.

Info
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.

Info
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.

Info
Helicopter magnetic and gravity gradiometry survey over the Pea Ridge iron mine and surrounding area, southeast Missouri, 2014

High resolution magnetic and gravity gradient data were collected in this area centered on the Pea Ridge iron oxide-apatite rare-earth element deposit. Flight lines spacing was 400 m, nominal flight height above terrain was 80 m. Includes flight line data for the gravity gradiometry survey and a report describing the survey parameters, field operations, quality control and data reduction procedures. Data are provided in CSV format.

Info
High resolution helicopter-borne magnetic and electromagnetic survey Eureka Graben area, Colorado September 1999

Survey parameters, data acquisition and processing procedures, and products of a 1999 airborne geophysical survey of this area. Data provided in GXF format and binary formats.

Info
High-Resolution Airborne Gravity Gradiometry, Magnetic, and Radiometric Data of Mountain Pass, Southeast Mojave Desert, California

Detailed airborne gravity gradiometry, magnetic, and radiometric survey data for this area flown with flight-line spacing of 100 and 200 m, nominal flight-line elevation above ground of 70 m, for about 1,814 line-kilometers. Data are provided in CSV and Geosoft database (.gdb) format. Gravity and hillshade are in GXF grids.

Info
Identification of mineral resources in Afghanistan-Detecting and mapping resource anomalies in prioritized areas using geophysical and remote sensing (ASTER and HyMap) data

Using geophysical and remote-sensing data, previously unrecognized targets of potential mineralization were identified; this report shows those targets along with the evidence for their potential.

Info
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.

Info
Mount Baker and Mount Adams Airborne Magnetic and Electromagnetic Survey Data, August 2002, Washington, USA

Flight line data for an airborne magnetic survey with nominal sensor height of 60m above terrain, flight-line data for a gravity gradiometry survey, with a report containing instrument and procedure details. Data are provided in CSV format.

Info
Oklahoma airborne magnetic surveys

Flight line data from airborne surveys conducted in 2017, provided in comma-separated values (csv format). Three areas were flown along a draped surface with a nominal survey height above ground of 120 meters. The flight line spacing for these areas was 200 to 400 m for Area 123, in southwestern Oklahoma; 1000 m for Area 4, in northwestern Oklahoma, and 800 m for Area 5, in north-central Oklahoma.

Info
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

Info
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.

Info
Summary of geophysical investigations of the Death Valley regional water-flow modeling project, Nevada and California

Magnetic and gravity anomaly and structure contour data

Info
The Earth Mapping Resources Initiative (Earth MRI): Mapping the Nation’s Critical Mineral Resources

A planned partnership between the USGS, the Association of American State Geologists, and other Federal, State, and private organizations to collect scientific information useful for finding and exploiting critical mineral resources in the US.

Info
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.

Info