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Mineral groups identified through automated analysis of remote sensing data acquired by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) were used to generate a map showing the type and spatial distribution of hydrothermal alteration, other exposed mineral groups, and green vegetation across the northwestern conterminous United States. Boolean algebra was used to combine mineral groups identified through analysis of visible, near-infrared, and shortwave-infrared ASTER data into attributed alteration types and mineral classes based on common mineralogical definitions of such types and the minerals present within the mineral groups. Alteration types modeled in this way can be stratified relative...
Tags: ASTER,
Idaho,
Montana,
Nebraska,
North Dakota, All tags...
Oregon,
South Dakota,
United States,
Washington,
Wyoming,
advanced argillic,
epithermal,
geoscientificInformation,
hydrothermal alteration type,
mineral mapping,
phyllic,
propylitic,
remote sensing, Fewer tags
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Multispectral remote sensing data acquired by Landsat 8 Operational Land Imager (OLI) sensor were analyzed using an automated technique to generate surficial mineralogy and vegetation maps of the conterminous western United States. Six spectral indices (e.g. band-ratios), highlighting distinct spectral absorptions, were developed to aid in the identification of mineral groups in exposed rocks, soils, mine waste rock, and mill tailings across the landscape. The data are centered on the western U.S. and cover portions of Texas, Oklahoma, Kansas, the Canada-U.S. border, and the Mexico-U.S. border during the summers of 2013 – 2014. Methods used to process the images and algorithms used to infer mineralogical composition...
Categories: Data;
Types: ArcGIS REST Map Service,
ArcGIS Service Definition,
Downloadable,
Map Service;
Tags: Arizona,
California,
Canada,
Colorado,
Idaho, All tags...
Kansas,
Land Use Change,
Mexico,
Minnesota,
Montana,
Nebraska,
Nevada,
New Mexico,
North Dakota,
Oklahoma,
Oregon,
Remote Sensing,
South Dakota,
Texas,
USGS Science Data Catalog (SDC),
United States,
Washington,
Wyoming,
agricultural fields,
argillic,
clay,
computational methods,
computational methods,
computational methods,
ferric iron,
ferrous iron,
geoscientificInformation,
green vegetation,
hydrothermal alteration,
image analysis,
image analysis,
image analysis,
iron hydroxide minerals,
iron sulfate minerals,
land use and land cover,
land use and land cover,
land use and land cover,
marble,
mica,
mine waste,
multispectral imaging,
multispectral imaging,
multispectral imaging,
oxides,
pyrite,
remote sensing,
remote sensing,
remote sensing, Fewer tags
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Multispectral remote sensing data acquired by the Landsat 8 Operational Land Imager (OLI) sensor were analyzed using a new, automated technique to generate a map of exposed mineral and vegetation groups in the western San Juan Mountains, Colorado and the Four Corners Region of the United States (Rockwell and others, 2021). Spectral index (e.g. band-ratio) results were combined into displayed mineral and vegetation groups using Boolean algebra. New analysis logic has been implemented to exploit the coastal aerosol band in Landsat 8 OLI data and identify concentrations of iron sulfate minerals. These results may indicate the presence of near-surface pyrite, which can be a potential non-point source of acid rock drainage....
Categories: Data;
Types: ArcGIS REST Map Service,
ArcGIS Service Definition,
Downloadable,
Map Service;
Tags: Arizona,
Colorado,
Four Corners region,
Lake City caldera,
New Mexico, All tags...
San Juan Mountains,
Silverton caldera,
USGS Science Data Catalog (SDC),
United States,
Utah,
agricultural fields,
argillic,
clay,
computational methods,
ferric iron,
ferrous iron,
geoscientificInformation,
green vegetation,
hydrothermal alteration,
image analysis,
iron hydroxide minerals,
iron sulfate minerals,
land use and land cover,
marble,
mica,
mine waste,
multispectral imaging,
oxides,
pyrite,
remote sensing, Fewer tags
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Mineral groups identified through automated analysis of remote sensing data acquired by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) were used to generate a map showing the type and spatial distribution of hydrothermal alteration, other exposed mineral groups, and green vegetation across the southwestern conterminous United States. Boolean algebra was used to combine mineral groups identified through analysis of visible, near-infrared, and shortwave-infrared ASTER data into attributed alteration types and mineral classes based on common mineralogical definitions of such types and the minerals present within the mineral groups. Alteration types modeled in this way can be stratified relative...
Tags: ASTER,
Arizona,
California,
Colorado,
Nevada, All tags...
New Mexico,
Southwestern U.S.,
United States,
Utah,
advanced argillic,
epithermal,
geoscientificInformation,
hydrothermal alteration type,
mineral mapping,
phyllic,
propylitic,
remote sensing, Fewer tags
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Mineral groups identified through automated analysis of remote sensing data acquired by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) were used to generate a map showing the type and spatial distribution of hydrothermal alteration, other exposed mineral groups, and green vegetation across the western conterminous United States. Boolean algebra was used to combine mineral groups identified through analysis of visible, near-infrared, and shortwave-infrared ASTER data into attributed alteration types and mineral classes based on common mineralogical definitions of such types and the minerals present within the mineral groups. Alteration types modeled in this way can be stratified relative...
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