USGS Yellowstone National Park Core Collection

In 1967 and 1968 the USGS, in partnership with NASA and the National Park Service, extracted rock core from 13 locations in Yellowstone National Park. Depths of the holes ranged from 215 ft to 1,088 ft and the total drilled footage was 6,802 ft. The deepest hole was drilled in Norris Basin. Research on these cores provided critical understanding of complex geothermal systems that would inform the potential development of other systems, external to the park, as energy sources. These cores are extremely rare due to the many restrictions on sampling in the park. Years later, the cores were used to investigate the origin of some of Yellowstone supervolcano’s lavas using techniques that did not even exist when the cores...

Categories: Collection, Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Collection, National Park Service, Yellowstone National Park, bulk crustal melting, caldera, All tags... completed, drilling, geochemistry, geothermal, hot springs, hydrothermal, hydrothermal alteration, ndc_collection, renewable energy, rhyolite, supervolcano, tectonics, uplift, Fewer tags

Digital map of iron sulfate minerals, other mineral groups, and vegetation of the western United States derived from automated analysis of Landsat 8 satellite data

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

Digital map of iron sulfate minerals, other mineral groups, and vegetation of the San Juan Mountains, Colorado, and Four Corners Region derived from automated analysis of Landsat 8 satellite data

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

Alamagan Volcano - overlay polygons

Alamagan Volcano is a Quaternary stratovolcano along the Mariana Arc, an active subduction zone in the western Pacific Ocean. Although primarily submerged, its peak reaches above sea level, with subaerially-exposed volcanic deposits dating back through the Holocene to the late Pleistocene. These feature data represent such deposits and other geologic features of Alamagan Volcano, describing its interpreted eruptive history.

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Alamagan Island, Andesite, Intermediate volcanic rock, Lava flow, Northern Islands, All tags... Northern Mariana Islands, OverlayPolys, Pacific, Pacific Islands, Pyroclastic rock, United States, Volcanic rock, geologic maps, hydrothermal alteration, overlay polygon, steam vent, volcanic activity, Fewer tags