Filters: Tags: Loess (X) > Categories: Data (X) > partyWithName: Geosciences and Environmental Change Science Center (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions ArcGIS Service Definition (1) Types ArcGIS REST Map Service (1) ArcGIS Service Definition (1) Downloadable (1) Map Service (1) Contacts Nolan C Barrette U.S. Geological Survey Marith Reheis Darren (Paco) Van Sistine U.S. Geological Survey - ScienceBase More... Tag Types Theme (2) Place (2) USGS Scientific Topic Keyword (2) Harvest Set (1) Tag Schemes USGSThesaurus (1) None (2) Thesaurus categories (1) ISO 19115 Topic Category (1) USGS information products (1) View Results as: JSON ATOM CSV

Data release for Late Quaternary loess and soils on uplands in the Canyonlands and Mesa Verde areas, Utah and Colorado Thin loess deposits on the uplands of the southeastern Colorado Plateau have previously not been well studied. We sampled deposits and soils from trenches on Hatch Point mesa near Canyonlands National Park, Utah, and from two outcrops in Mesa Verde National Park, Colorado. At Hatch Point, the oldest buried unit yielded two OSL ages of 10,370 and 7,555 yr; the middle unit yielded 10 OSL ages from 6220 to 1385 yr; and the youngest unit has a single age of 1740 yr. At Mesa Verde, three loess units are preserved in the two outcrops we examined; six OSL ages range from 51 to 17 ka. At least one buried soil is present between two units with ages of about 50 and 40 ka. The ages of the loess units in both study areas correspond... Categories: Data; Tags: Canyonlands National Park, Colorado, Colorado Plateau, Colorado River, Geochemistry, All tags... Geochronology, Geomorphology, Hatch Point, Mesa Verde National Park, San Juan River, Soil Sciences, USGS Science Data Catalog (SDC), Utah, grain size analysis, loess, sediment transport, soil chemistry, soil formation, soil horizons, surficial geologic units, 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