Yager, Douglas B.

About the author

ORCID: 0000-0001-5074-4022
Abandoned mines and quarries, Aeromagnetic surveying, Aluminum, Antimony, Arsenic, Atomic emission spectroscopy, Barium, Bedrock geologic units, Beryllium, Bismuth, Boron, Cadmium, Calcium, Carbon, Cerium, Cesium, Chemical analysis, Chlorine, Chromium, Coal resources, Cobalt, Copper, Dissolved gases, Dissolved metals, Dissolved organic compounds, Dysprosium, Economic geology, Electromagnetic surveying, Erbium, Europium, Fluorine, Gadolinium, Gallium, Geochemistry, Geologic maps, Geologic processes, Geologic structure, Geophysics, Geospatial datasets, Geothermal resources, Germanium, Gold, Groundwater, Groundwater flow, Hafnium, Holmium, Hydrogeology, Indium, Industrial pollution, Inverse modeling, Iron, Lanthanum, Lead, Lithium, Lutetium, Magnesium, Magnetic field (earth), Magnetic susceptibility, Magnetic susceptibility analysis, Magnetotelluric surveying, Manganese, Maps and atlases, Mass spectroscopy, Mercury, Metallic mineral resources, Mine drainage, Mine waste, Mineral deposits, Mineral resources, Mineralogy, Molybdenum, Natural resource assessment, Natural resource exploration, Neodymium, Nickel, Niobium, Palladium, Phosphorus, Platinum, Potassium, Praseodymium, Remediation, Resistivity, Rocks and deposits, Rubidium, Salinity, Samarium, Scandium, Selenium, Silicon, Silver, Sodium, Spatial analysis, Strontium, Sulfur, Tantalum, Tellurium, Terbium, Thallium, Thorium, Thulium, Time series analysis, Tin, Titanium, Toxic trace element contamination, Tungsten, Unconsolidated deposits, Uranium, Vanadium, Volcanic rocks, Water chemistry, Water pH, Water quality, Water sampling, Water temperature, X-ray diffraction, Ytterbium, Yttrium, Zinc, Zirconium, Craters, Mine sites, Mineral deposit areas, Volcanic features, ArcInfo coverage, ERDAS Imagine grid format, GeoTIFF, Geodatabase (Esri), MT/EMAP Data Interchange Standard, MTH5 format, Microsoft Excel format, NetCDF, Portable Document Format, Comma-delimited text, Shapefile, GeoscientificInformation

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

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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.

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Potash—A vital agricultural nutrient sourced from geologic deposits

This report summarizes the primary sources of potash in the United States. Potash is an essential nutrient that, along with phosphorus and nitrogen, is used as fertilizer for growing crops. Plants require sufficient potash to activate enzymes, which in tu

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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

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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.

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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.

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The geochemical atlas of Alaska, 2016

Georeferenced images depicting the concentration of 68 chemical elements in the near-surface materials (sediments and soils).

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Magnetic susceptibility measurements on hydrothermally altered rocks in the Silverton caldera, southwest Colorado

Magnetic susceptibility measurements on rock outcrops to help understand magnetic survey anomalies in this area. A total of 1,400 measurements of magnetic susceptibility from 87 locations have been conducted on Paleogene volcanic and plutonic rocks that have been hydrothermally altered. Data are provided in CSV format.

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Data Supporting The Geochemical Atlas of Alaska, 2016

Best measured value for 68 elements in 175,856 samples were combined statewide. Data are provided in shapefile format.

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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

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Audiomagnetotelluric sounding data in the Silverton Caldera complex, Colorado, 2019

Audiomagnetotelluric station locations and data to characterize subsurface rock properties important for understanding surface water and groundwater quality issues, and also to improve knowledge of deep geologic structures that may have been conduits for hydrothermal fluids that formed mineral deposits.

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Magnetotelluric sounding data in the Silverton Caldera complex, Colorado, 2018

Magnetotelluric sounding data collected in July 2018 in the Silverton Caldera complex, Colorado, in the Southern Rocky Mountain Volcanic Field to understand the geologic structure of this area.

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Magnetotelluric sounding data in the Silverton Caldera complex, Colorado, 2019

Magnetotelluric station locations and data intended to help to characterize subsurface rock properties important for understanding surface water and groundwater quality issues, and also to improve knowledge of deep geologic structures that may have been conduits for hydrothermal fluids that formed mineral deposits.

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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.

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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.

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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.

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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

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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

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