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Whole rock, soil, sediment, x-ray diffraction, and electron microprobe analyses of samples from the Orange Hill-Bond Creek area, Nabesna Quadrangle, Alaska This data release includes geochemical, x-ray diffraction mineralogical, and electron probe microanalysis (EPMA) data on rocks, soils, and sediments collected near the Orange Hill and Bond Creek porphyry copper deposits, Nabesna quadrangle, Alaska. Geochemical analyses were completed by a laboratory under contract with the U.S. Geological Survey (USGS). Electron microprobe and x-ray diffraction mineralogical analyses were completed by personnel of the Central Region Minerals Program in Denver, Colorado. The samples were collected and analyzed during 2014 to 2016, selected to help characterize the distribution and composition of mineralized and unmineralized geologic materials in this remote part of the eastern Alaska... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Alaska, Alaska Range, Alder Gulch, Bond Creek, Chathenda Creek, All tags... EPMA, Geochemistry, Gold Hill, Mineralogy, Nabesna, Nabesna A-2 quadrangle, Nabesna A-4 quadrangle, Nabesna B-4 quadrangle, Nikonda Creek, Nutzotin Mountains, Orange Hill, Red Hill Creek, USGS Science Data Catalog (SDC), Valdez-Cordova County, Wrangell Mountains, Wrangell–Saint Elias National Preserve, XRD, airborne imaging spectroscopy, chemical analysis, copper, economy, electron probe micronanalysis, geochemistry, geoscientificInformation, hyperspectral, hyperspectral imaging, mineral resources, mineralogy, porphyry copper, rock, rock geochemistry, soil, soil chemistry, soil geochemistry, stream sediment, unconsolidated deposits, x-ray diffraction, Fewer tags Transient Electromagnetic Sounding Data Collected in the San Luis Valley, Colorado near the Great Sand Dunes National Park and Preserve and the Alamosa National Wildlife Refuge (Field Seasons 2007, 2009, and 2011) Transient electromagnetic (TEM) soundings were made in the San Luis Valley, Colorado, to map the location of a blue clay unit as well as to investigate the presence of suspected faults. A total of 147 soundings were made near and in Great Sand Dunes National Park and Preserve, and an additional 6 soundings were made near Hansen Bluff on the eastern edge of the Alamosa National Wildlife Refuge. The blue clay is a significant hydrologic feature in the area that separates an unconfined surface aquifer from a deeper confined aquifer. Knowledge of its location is important to regional hydrological models. Previous analysis of well logs has shown that the blue clay has a resistivity of 10 ohm-meters or less, which is... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Alamosa County, Alamosa National Wildlife Refuge, Colorado, Great Sand Dunes National Park, Great Sand Dunes National Preserve, All tags... Saguache County, San Luis Valley, TEM, USGS Science Data Catalog (SDC), aquifer, clay, clay deposits, electromagnetic surveying, fault detection, faulting (geologic), geophysics, geoscientificInformation, groundwater, subsurface mapping, subsurface maps, transient electromagnetic sounding, Fewer tags