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Digital Representation of Geologic Units Above and Beneath Jurassic, Triassic, Permian, Pennsylvanian, and Mississippian Periods from USGS Publications Digital Representation of Geologic Units Above and Beneath Jurassic, Triassic, Permian, Pennsylvanian, and Mississippian Periods from USGS Publications
Paleogeologic information directly above (supracrop) and below (subcrop) geologic periods from U.S. Geological Survey (USGS) reports was digitized from scanned plates. Geologic periods maps include the Jurassic (McKee and Others, 1956), Triassic (McKee and Others, 1959), Permian (McKee and McKee, 1967), Pennsylvanian (McKee and Crosby, 1975), and Mississippian (Craig and Connor, 1979)...
Measurements and photographs of permafrost cores drilled on the Arctic Coastal Plain, Alaska Measurements and photographs of permafrost cores drilled on the Arctic Coastal Plain, Alaska
As the Arctic physical environment undergoes rapid change, permafrost conditions also are shifting. Thawing of ice-rich permafrost can cause terrain instability and compromise infrastructure as the permafrost excess ice content (EIC) melts – EIC refers to the volume of ground ice that exceeds the soil’s pore space when thawed. This dataset provides EIC depth measurements from 38...
Mineral chemistry and U-Th-Pb geochronology of critical mineral-enriched breccia samples from Hicks Dome, southern Illinois Mineral chemistry and U-Th-Pb geochronology of critical mineral-enriched breccia samples from Hicks Dome, southern Illinois
Mineralized breccias at Hicks Dome, Illinois host abundant fluorspar, Pb-Zn sulfides, barite, rare earth elements (REE), and high field strength elements (HFSE). The REE+HFSE mineralogy of breccias between 600 and 900 meters were examined and mineral compositions were determined by electron probe microanalysis (EPMA), using a JEOL 8530F Plus field emission electron microprobe at the U.S
Abandoned Mine Land (AML) Geochemical Data: Henry Mountains and Fremont Mining Districts, UT Abandoned Mine Land (AML) Geochemical Data: Henry Mountains and Fremont Mining Districts, UT
The United States Geological Survey (USGS) collected a total of 179 samples of surficial sediment from abandoned mine wastepiles, ephemeral channels below wastepiles, nearby outcrops, and background areas representative of the undisturbed lithology within the Henry Mountains and Fremont mining districts (Krahulec, 2018). The samples are associated with the following mining claims within...
Digital database of the previously published Geologic Map of Alabama (Special Map 221) Digital database of the previously published Geologic Map of Alabama (Special Map 221)
A digital version of the 1:500,000 scale geologic map of Alabama (Osborne and others, 1989) was required for a new national compilation of state geologic maps and U.S. Geological Survey regional maps, but the map had not previously been digitized. The USGS National Cooperative Geologic Mapping Program’s (NCGMP) National Geologic Synthesis Project worked with the Geological Survey of...
Environmental DNA surveillance results for Alchesay National Fish Hatchery, 2021-2024 Environmental DNA surveillance results for Alchesay National Fish Hatchery, 2021-2024
Quantitative PCR results for surveillance of New Zealand mudsnail environmental DNA at the U.S. Fish and Wildlife Service Alchesay National Fish Hatchery.