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This release presents the GIS data (in GDB, shapefile, and e00 [coverage] formats) and metadata for a 1:24,000-scale geologic map of the Poncha Pass area in central Colorado. A cartographic version of the geologic map, including map unit descriptions, interpretative text, and accessory figures and tables, is being separately published as a U.S. Geological Survey Scientific Investigations Map (SIM). The map area is irregular in shape, covering all of one 7.5' quadrangle (Poncha Pass) and parts of five others (Mount Ouray, Maysville, Salida West, Salida East, and Wellsville). The map boundaries were drawn to cover all of the "Poncha mountain block", coincident with the approximately 15-kilometer-long northwestern...
Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 40Ar/39Ar age, Arkansas River, Bear Creek, Bonanza Tuff, Bull Lake glaciation, All tags...
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This data release includes data collected from the Villa Grove helicopter magnetic survey in northern San Luis Valley and Poncha Pass region in south-central Colorado, USA. The survey area extends over the northern part of Great Sand Dunes National Park, Poncha Pass and vicinity, and into the southern end of the Upper Arkansas Valley. It includes the communities of Crestone, Villa Grove, Saguache, and Salida. Several U.S. Geological Survey programs (including the National Cooperative Geologic Mapping Program, Mineral Resources Program, and Geothermal Program), as well as the Colorado Geological Survey, funded the survey. The data are part of studies to help refine our knowledge in this area about the nature of aquifers,...
The San Luis Valley and associated underlying basin of south-central Colorado and north-central New Mexico is the largest structural and hydrologic basin of the Rio Grande Rift and fluvial system. The surrounding San Juan and Sangre de Cristo Mountains reveal evidence of widespread volcanism and transtensional tectonism beginning in the Oligocene and continuing to the present, as seen in fault displacement of Pleistocene to Holocene deposits along the eastern basin-bounding Sangre de Cristo fault system and fault zones along the western margin of the basin. The San Luis basin can generally be subdivided into northern and southern basins at the structural and physiographic high terrain of the San Luis Hills in the...
Tags: 3He cosmogenic nuclide, Alamosa, Alamosa County, Alamosa River, Bishop Tuff, All tags...


    map background search result map search result map USGS 1:24000-scale Quadrangle for San Luis Creek, CA 1953 USGS 1:24000-scale Quadrangle for San Luis Creek, CA 1953 USGS 1:31680-scale Quadrangle for San Luis Creek, CA 1922 USGS 1:31680-scale Quadrangle for San Luis Creek, CA 1922 High Resolution Aeromagnetic Survey, Villa Grove, Colorado, USA, 2011 Data release for Geologic Map of the Poncha Pass Area, Chaffee, Fremont, and Saguache Counties, Colorado Data release for Surficial Geology of the Northern San Luis Valley, Saguache, Fremont, Custer, Alamosa, Rio Grande, Conejos, and Costilla Counties, Colorado USGS 1:24000-scale Quadrangle for San Luis Creek, CA 1953 USGS 1:24000-scale Quadrangle for San Luis Creek, CA 1953 USGS 1:31680-scale Quadrangle for San Luis Creek, CA 1922 USGS 1:31680-scale Quadrangle for San Luis Creek, CA 1922 Data release for Geologic Map of the Poncha Pass Area, Chaffee, Fremont, and Saguache Counties, Colorado High Resolution Aeromagnetic Survey, Villa Grove, Colorado, USA, 2011 Data release for Surficial Geology of the Northern San Luis Valley, Saguache, Fremont, Custer, Alamosa, Rio Grande, Conejos, and Costilla Counties, Colorado