Yager, Douglas B.

About the author

U.S. Geological Survey, Central Region, Rocky Mountain area, Geology discipline
Abandoned mines and quarries, 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, Erbium, Europium, Fluorine, Gadolinium, Gallium, Geochemistry, Geologic maps, Geologic structure, Geospatial datasets, Geothermal resources, Germanium, Gold, Hafnium, Holmium, Indium, Industrial pollution, Iron, Lanthanum, Lead, Lithium, Lutetium, Magnesium, Magnetic susceptibility, Magnetic susceptibility analysis, 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, Rocks and deposits, Rubidium, Salinity, Samarium, Scandium, Selenium, Silicon, Silver, Sodium, Strontium, Sulfur, Tantalum, Tellurium, Terbium, Thallium, Thorium, Thulium, Tin, Titanium, Toxic trace element contamination, Tungsten, Uranium, Vanadium, Volcanic rocks, Water chemistry, Water pH, Water quality, Water sampling, Water temperature, X-ray diffraction, Ytterbium, Yttrium, Zinc, Zirconium, Mine sites, Mineral deposit areas, ArcInfo coverage, ERDAS Imagine grid format, GeoTIFF, Geodatabase (ESRI), Microsoft Excel format, Portable Document Format, 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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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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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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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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