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Data release of OSL, 14C, and U-series age data supporting geologic mapping along the South Platte River corridor in northeastern Colorado In conjunction with geologic mapping of four 7.5′ quadrangles along the South Platte River corridor in northeastern Colorado (Masters, Orchard, Weldona, and Fort Morgan), geochronology samples were collected and analyzed using optically stimulated luminescence (OSL), radiocarbon (14C), or U-series methods to provide age control for mapping units. This section of river corridor is largely covered by surficial deposits that formed from alluvial, eolian, and hillslope processes operating in concert with environmental changes from the Pleistocene to the present. The South Platte River originates high in the Colorado Rocky Mountains and recurrent glaciation of basin headwaters has affected river discharge and sediment... Categories: Data; Tags: Colorado, Fort Morgan, Geochemistry, Masters, Morgan County, All tags... Orchard, South Platte River, USGS Science Data Catalog (SDC), United States, Uranium-series, Weld County, Weldona, alluvial, eolian, geochronology, luminescence, radiocarbon, Fewer tags Digital database of the previously published Geologic Map of the Lamar Quadrangle, Colorado and Kansas This digital data release contains geospatial geologic data compiled for the Lamar 250k quadrangle, a region in eastern Colorado and western Kansas, which is predominantly covered by Quaternary deposits that overlay Cretaceous bedrock. Geologic data, compiled from published sources, include the location and characteristics of geologic contacts and faults, mapped geologic polygons, and ammonite fossils. The geologic database includes spatial feature classes that collectively contain the geologic information that are presented in the previously published map plate. The spatial data are accompanied by non-spatial tables that describe the sources of geologic information, a description of geologic map units, a glossary... Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: Colorado, GeMS, Geologic Map Schema, Information Sciences, Kansas, All tags... Lamar, Lamar Co 250k, NCGMP, NGS, National Cooperative Geologic Mapping Program, National Geologic Synthesis Project, Stratigraphy, US GeoFramework Initiative, UWGI, Water Resources, alluvium, carlile shale, cretaceous, dakota sandstone, data release, eolian, geologic contacts, geologic map, geologic structure, geoscientificInformation, graneros shale, greenhorn limestone, holocene, loess, lower cretaceous, mesozoic, niobrara formation, ogallala formation, pierre shale, pleistocene, pliocene, quaternary, structure contours, tertiary, upper cretaceous, upper miocene, vector digital data, Fewer tags