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This Data Release provides tabular and geospatial data digitized by the U.S. Geological Survey (USGS) from a U.S. Bureau of Mines (USBoM) report titled Mineral Investigation of Sangre de Cristo Wilderness Study Area, Alamosa, Custer, Fremont, Huerfano, and Saguache Counties, Colorado. The original preliminary paper report, numbered Mineral Land Assessment 65-83 (MLA 65-83; Ellis and others, 1983), presented the results of a mineral resource potential survey of areas in and around the Sangre de Cristo Range flanking the northeastern extent of San Luis Valley in south-central Colorado. Included in this Data Release are georeferenced scans of the regional plate maps, digitized sample site locations, analytical...
Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: Alamosa County, Alamosa County, Baca National Wildlife Refuge, Blanca Peak, Cañon City, All tags...
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This report summarizes the geochronologic results from boulders deposited on glacial moraines in the southern Sawatch and Sangre de Cristo Mountains of south-central Colorado. Within this report are detailed the methodology used to collect samples of whole rock, determine the concentrations of cosmogenic beryllium 10 in purified quartz isolated from those samples, and use those nuclide concentrations to calculate surface exposure ages. This report should be used as supplementary material for any publication(s) that uses the nuclide concentrations and/or ages reported herein. This version supersedes all previous age estimates and reports.
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 1:100000-scale Quadrangle for Blanca Peak, CO 1982 USGS 1:24000-scale Quadrangle for Blanca Peak, CO 1967 USGS 1:24000-scale Quadrangle for Blanca Peak, CO 2001 USGS 1:24000-scale Quadrangle for Blanca Peak, CO 1967 USGS 1:24000-scale Quadrangle for Blanca Peak, CO 1967 USGS 1:24000-scale Quadrangle for Blanca Peak, CO 1967 USGS 1:24000-scale Quadrangle for Blanca Peak, CO 1967 USGS 1:24000-scale Quadrangle for Blanca Peak, CO 1967 USGS 1:24000-scale Quadrangle for Blanca Peak, CO 1967 USGS 1:100000-scale Quadrangle for Blanca Peak, CO 1982 Digital Data from Mineral Investigation of Sangre de Cristo Wilderness Study Area, Alamosa, Custer, Fremont, Huerfano, and Saguache Counties, Colorado, USA Data release for Surficial Geology of the Northern San Luis Valley, Saguache, Fremont, Custer, Alamosa, Rio Grande, Conejos, and Costilla Counties, Colorado Data release for cosmogenic beryllium-10 exposure ages of boulders deposited on moraines in the southern Sawatch and Sangre de Cristo Mountains, southern Colorado USGS 1:24000-scale Quadrangle for Blanca Peak, CO 1967 USGS 1:24000-scale Quadrangle for Blanca Peak, CO 2001 USGS 1:24000-scale Quadrangle for Blanca Peak, CO 1967 USGS 1:24000-scale Quadrangle for Blanca Peak, CO 1967 USGS 1:24000-scale Quadrangle for Blanca Peak, CO 1967 USGS 1:24000-scale Quadrangle for Blanca Peak, CO 1967 USGS 1:24000-scale Quadrangle for Blanca Peak, CO 1967 USGS 1:24000-scale Quadrangle for Blanca Peak, CO 1967 USGS 1:100000-scale Quadrangle for Blanca Peak, CO 1982 USGS 1:100000-scale Quadrangle for Blanca Peak, CO 1982 Data release for cosmogenic beryllium-10 exposure ages of boulders deposited on moraines in the southern Sawatch and Sangre de Cristo Mountains, southern Colorado Digital Data from Mineral Investigation of Sangre de Cristo Wilderness Study Area, Alamosa, Custer, Fremont, Huerfano, and Saguache Counties, Colorado, USA Data release for Surficial Geology of the Northern San Luis Valley, Saguache, Fremont, Custer, Alamosa, Rio Grande, Conejos, and Costilla Counties, Colorado