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Filters: partyWithName: Robert A Zielinski (X) > Categories: Data (X)

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Comprehensive sampling of peat, underlying lakebed sediments, and coexisting waters of a naturally uraniferous montane wetland are combined with hydrologic measurements to define the important controls on uranium (U) supply and uptake. The major source of U to the wetland is groundwater flowing through locally fractured and faulted granite gneiss of Proterozoic age. Dissolved U concentrations in four springs and one seep ranged from 20 to 83 ppb (µg/l). Maximum U concentrations are ~300 ppm (mg/kg) in lakebed sediments and >3000 ppm in peat. This study documents the conditions and processes controlling the efficient uptake of U in a relatively remote, natural wetland that is absent of reported U occurrences, mining...
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Forty samples of outcropping rock samples were collected from the Permian Cutler Formation exposed in the Sinbad Valley, Mesa County, Colorado by USGS volunteer Jon Thorson. This sample set includes 13 pairs of co-existing red unaltered and yellow-grey bleached sandstone. The decimal latitude and longitude locations of the sample collection sites are listed in the “All_Rock_Data” worksheet in the accompanying “All_Sinbad_Rocks” workbook. The samples were collected from rocks exposed on the eastern edge of a breached salt-cored anticline within about 1 to 100 meters from an active seep from which sulfurous brines supply water to Salt Creek. The co-existing red/bleached samples were collected within the same stratigraphic...
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Major-element and trace-element concentrations in 76 core samples and seven surface samples of rocks from the Coles Hill uranium deposit and vicinity, Pittsylvania County, south-central Virginia are presented as tabular digital data. The Coles Hill deposit is the largest unmined uranium deposit in the United States. The data were collected to 1) characterize the chemistry of variably uranium-mineralized rock units within the deposit and 2) to compare with the chemistry of un-mineralized surface exposures of the same rock units. Cores were sampled in 2017 by U.S. Geological Survey (USGS) personnel from archived historical collections of the Virginia Museum of Natural History. Core samples were selected based on measurable...
    map background search result map search result map Stratigraphic, geochemical, and hydrologic data for the Boston Peak wetland, Larimer County, CO, USA Location, description, and whole rock geochemistry of rocks from the Coles Hill uranium deposit and vicinity, south-central Virginia Whole rock geochemistry and comparative leachability of variably bleached and red sandstones of the Permian Cutler Formation, Mesa County, Colorado Stratigraphic, geochemical, and hydrologic data for the Boston Peak wetland, Larimer County, CO, USA Whole rock geochemistry and comparative leachability of variably bleached and red sandstones of the Permian Cutler Formation, Mesa County, Colorado Location, description, and whole rock geochemistry of rocks from the Coles Hill uranium deposit and vicinity, south-central Virginia