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This dataset includes all Level-2 AST-05 ASTER Thermal Infrared Emissivity products, re-calibrated to new emissivity values "adjusted" to match those of laboratory spectral measurements of samples collected from geo-located sample and pixel sites. Further details on the processing and masking methods used are described in the journal article associated with this data release.
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These geotiffs represent the raster GIS outputs of Linear Deconvolution (Linear Spectral Unmixing) analysis of ASTER image pixels covering various sand dune and sand sheet fields throughout the Western United States and Alaska. This particular dune field (DS-1) represents the Algodones Dunes near the Salton Sea of Southern California. The accompanying zip file contains linear deconvolution-derived mineral fractional abundance maps for a two-component mixture model of Quartz and Potassic Feldspars, as well as RMS and residual errors. Each geotiff layer has an associated metadata file with further details.
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These geotiffs represent the raster GIS outputs of Linear Deconvolution (Linear Spectral Unmixing) analysis of ASTER image pixels covering various sand dune and sand sheet fields throughout the Western United States and Alaska. This particular dune field (DS-4) represents the Great Kobuk Sand Dunes of Alaska. The accompanying zip file contains linear deconvolution-derived mineral fractional abundance maps for a two-component mixture model of Quartz and Plagioclase Feldspars, as well as RMS and residual errors. Each geotiff layer has an associated metadata file with further details.
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A mineral resource assessment for tungsten, a critical mineral commodity (see 'Related External Resources' section below) for the United States, was carried out by the U.S. Geological Survey (USGS) for a portion of the Great Basin region, in western Nevada and eastern California, between latitudes 36N and 42N and longitudes 116W and 120W. This study (Lederer and others, in review) integrates data from several sources, including geologic, geochemical, geophysical, remote sensing, watershed analysis, and mining with recently developed grade and tonnage models, expert estimates, and software tools and analyses to generate probabilistic estimates of undiscovered tungsten skarn resources. The assessment was conducted...
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Alpine County,
California,
Carbonate rock,
Churchill County,
Douglas County, All tags...
Elko County,
Esmeralda County,
Eureka County,
Fresno County,
Granite,
Great Basin,
Humboldt County,
Inyo County,
Kings County,
Lander County,
Lyon County,
Madera County,
Mariposa County,
Mineral County,
Mono County,
Nevada,
Nye County,
Pershing County,
Skarn,
Storey County,
Tulare County,
Tuolumne County,
USGS Science Data Catalog (SDC),
Washoe County,
chemical analysis,
critical minerals,
geochemistry,
geophysics,
geoscientificInformation,
metallic mineral resources,
mineral deposits,
remote sensing,
tungsten,
unconsolidated deposits, Fewer tags
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This data represents laboratory reflectance and emissivity spectral measurements of dune sand samples collected from a variety of dune types and mineralogical compositions from eight dune field locations in Alaska, Arizona, California, Colorado, Idaho, Nevada and New Mexico (labeled and designated as samples DS-1 through DS-8). Each sample were sieved into various size classes and measured both prior to and after sieving. Visible through Near Infrared through Shortwave Infrared (~0.4 - 2.5 microns) reflectance were measured using an artificial light source attached to an Analytical Spectral Devices (ASD) spectrometer. Hemispherical reflectance measurements spanning Mid-IR wavelengths, including the Thermal Infrared...
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