Filters: Tags: stratigraphy (X) > Categories: Data Release - Revised (X)

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Sediment properties, charcoal counts, and radiocarbon dates from the Pallett Creek paleoseismic site, San Gabriel Mountains, California (ver. 2.0, February 2024) This data release provides geochemical, sedimentological, and geochronological data from interbedded fluvial and marsh deposits and radiocarbon dates of the section spanning the last 1500 years from the Pallett Creek paleoseismic site, California. The samples were collected to support paleoenvironmental reconstruction of the site and refine several previous investigations of paleoearthquakes along the San Andreas Fault (Sieh, 1978; Sieh, 1984; Sieh et al., 1989; Biasi and Weldon, 1994; Scharer et al., 2011). Geochemical and sedimentological data include grain size, magnetic susceptibility, dry bulk density, percent total organic matter, and percent total carbonate at contiguous 1 cm spacing and carbon (total C)... Categories: Data, Data Release - Revised; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Geomorphology, Seismology, Stratigraphy, USGS Science Data Catalog (SDC), carbon-14 analysis, All tags... climate change, geoscientificInformation, sedimentology, Fewer tags Argon data for Santa Cruz Basin, Arizona (ver. 1.1, November 2022) This data release includes 40Ar/39Ar data from the U.S. Geological Survey for samples from the Santa Cruz Basin, Arizona. Mineral samples were collected by Kenzie Turner and William Page from the upper Santa Cruz Basin, Arizona. Potassium-bearing mineral grains were separated from the bulk sample and analyzed by argon geochronology at the U.S. Geological Survey Argon Geochronology Laboratory in Denver, Colorado. The data provide age constraints on units in the relevant geologic mapping area. Categories: Data, Data Release - Revised; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: 40Ar/39Ar, Argon Geochronology Laboratory, Arizona, GGGSC, Geochemistry, All tags... Geology, Geophysics, and Geochemistry Science Center, MRP, Mineral Resource Program, Stratigraphy, Structural Geology, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), Volcanology, geologic mapping, geoscientificInformation, Fewer tags Geophysical data from the unnamed lake at the National Crude Oil Spill Fate and Natural Attenuation Research Site, Bemidji, MN (ver. 3.0, May 2022) The National Crude Oil Spill Fate and Natural Attenuation Research Site is located near Bemidji, MN, USA. A high-pressure oil pipeline ruptured in 1979 releasing ~1.7 million liters of light crude oil, which sprayed over an area of ~6500 square meters and collected in topographic depressions. Approximately 75% of the spilled oil was recovered. Much of the remainder reached the water table, where it is distributed into three residual oil bodies (the north, middle, and south oil pools). Groundwater flows east-northeast toward a small lake roughly 300 m downgradient from the original spill site. Secondary reactions of sediments with byproducts from anaerobic degradation of the oil plumes cause increases in total dissolved... Categories: Data Release - Revised; Tags: Ambient Monitoring, Bemidji, Focused Assessments, Geophysics, Geophysics, All tags... Groundwater, Hydrology, InlandWaters, Investigation and Monitoring Support, Minnesota, Stratigraphy, Surface Geophysics, Surface Water, USGS Science Data Catalog (SDC), Water Resources, boundaries, groundwater, hydrogeology, hydrology, permafrost, surface water, Fewer tags Stillwater Complex Strike and Dip Database (ver. 2.0, April 2024) This shapefile includes strike and dip information for the area of the Stillwater Complex, located in southwestern Montana. This dataset was created from pre-existing digital strike and dip information and from digitizing strike and dip locations from georeferenced map images. The data includes information about the strike and dip locations; the geologic unit and rock type the measurement was taken on; information about the source map, such as map title and scale; and other miscellaneous information. Version 2.0 includes additional strike and dip measurements and updated locations for many points resulting from maps that were re-georeferenced using high resolution lidar. For access to the previous version of this... Categories: Data, Data Release - Revised; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Geomorphology, Mineral Resources, Montana, Stillwater, Stratigraphy, All tags... Structural Geology, USGS Science Data Catalog (SDC), geologic structure, geoscientificInformation, Fewer tags