Filters: Tags: Pinedale Glaciation (X) > partyWithName: Theodore R Brandt (X)

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Data release for Geologic Map of the Homestake Reservoir 7.5' quadrangle, Lake, Pitkin, and Eagle Counties, Colorado The Homestake Reservoir 7.5' quadrangle lies at the northwestern end of the Upper Arkansas Valley, and headwaters of the Arkansas River, and the Roaring Fork, Fryingpan, and Eagle Rivers of the Colorado River system. The quadrangle lies within tectonic provinces of the 1.4 Ga Picuris Orogeny, the late Paleozoic Ancestral Rockies, Late Cretaceous-Paleocene Laramide orogeny, Oligocene to Miocene, and Pliocene?, volcanism, and Miocene to the present Rio Grande rift extensional tectonics. In the eastern half of the quadrangle, high-angle, east-dipping, Neogene normal faults displace Proterozoic rocks, and locally Mio-Pliocene? volcanic rocks. Many quartz veins and hydrothermally altered zones are exposed along the eastern... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: 10Be, 26Al, 10th Mountain Division Hut, Bald Eagle Mountain, Bear Lake, Brady Lake, All tags... Bull Lake glaciation, Busk Creek, Camp Hale, Carlton Tunnel, Colorado, Colorado River, Eagle County, Eagle River, Economic Geology, Galena Lake, Galena Mountain, Geomorphology, Glaciology, Hagerman Pass, Hagerman Tunnel, Homestake Creek, Homestake Peak, Homestake Reservoir, Homestake shear zone, Hydrology, Isolation Lake, Lake County, Lake Esther, Laramide, Leadville, Leadville Mining District, Leadville Quadrangle, Lincoln Porphyry, Longs Gulch, Mill Creek, Mineral Resources, Miocene volcanics, Mount Massive Wilderness, Mount of the Holy Cross Wilderness, Oligocene volcanics, Paradise Lakes, Pinedale Glaciation, Pitkin County, Pliocene volcanics, Porcupine Gulch, Rio Grande rift, San Isabel National Forest, Sawatch Range, Sawatch anticlinorium, Slide Lake, Soil Sciences, Sopris Creek, South Park, St. Kevin Granite, St. Kevin Mining District, Structural Geology, Tennessee Creek, Tennessee Park, Tennessee Pass, Timberline Lake, Turquoise Lake, USA, USGS Science Data Catalog (SDC), Uncle Bud’s Cabin, United States, Upper Arkansas River, Upper Arkansas Valley, Water Resources, White River National Forest, cosmogenic nuclide, landslides, metalamprophyre, neotectonics, pre-Bull Lake glaciation, pseudotachylite, sakungen, Fewer tags Data release for the geologic map of the Fort Morgan 7.5' quadrangle, Morgan County, Colorado The Fort Morgan 7.5' quadrangle is located on the semiarid plains of northeastern Colorado, along the South Platte River corridor where the river has incised into Upper Cretaceous Pierre Shale. The Pierre Shale is largely covered by surficial deposits that formed from alluvial, eolian, and hillslope processes operating in concert with environmental changes from the late Pliocene to the present. The South Platte River, originating high in the Colorado Rocky Mountains, has played a major role in shaping surficial geology in the map area, which is several tens of kilometers downstream from where headwater tributaries join the river. Recurrent glaciation (and deglaciation) of basin headwaters has affected river discharge... Tags: Bijou Creek, Bijou No 2 Reservoir, Bull Lake glaciation, Colorado, Empire Reservoir, All tags... Fort Morgan, Front Range, Greeley, Jackson Reservoir, Kersey, Kiowa Creek, Masters, Milliron Draw, Morgan County, OSL, Orchard, Pinedale glaciation, South Platte River, U-series, USA, USGS Science Data Catalog (SDC), United States, Weld County, Weldona, Wildcat Creek, alluvium, argillic B horizon, braided, colluvium, discharge, dune, eolian, floodplain, geologic map, lignite, luminescence, meandering, radiocarbon, sand sheet, sheetflood, soil, terrace, Fewer tags Data release for Geologic Map of the Poncha Pass Area, Chaffee, Fremont, and Saguache Counties, Colorado 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... Chaffee County, Cleveland Mountain, Clover Creek, Colorado, Conejos Formation, Droz Creek, Dry Union Formation, Fremont County, Geomorphology, Laramide orogeny, Little Cochetopa Creek, Mears Junction, Methodist Mountain, Mineral Resources, Mount Ouray, Murphys Hole, O’Haver Lake, Pinedale Glaciation, Poncha Creek, Poncha Mountain, Poncha Pass, Poncha Springs, Rio Grande rift, Round Hill, Saguache County, Salida, San Luis Creek, San Luis Valley, Sand Gulch, Sangre de Cristo Mountains, Sawatch Range, Silver Creek, Simmons Peak, South Arkansas River, Stratigraphy, Structural Geology, U-Pb age, USA, USGS Science Data Catalog (SDC), United States, Upper Arkansas Valley, Volcanology, basement rocks, basin-fill deposits, dike, fault slip, intrusive rocks, metamorphic rocks, mountain block, normal fault, oblique-slip fault, pre-Bull Lake glaciation, range-front fault, reverse fault, sedimentary rocks, sill, strike slip, surficial deposits, uplift, volcanic rocks, Fewer tags Data release for the geologic map of the upper Arkansas River valley region, north-central Colorado This 1:50,000-scale geologic map represents a compilation of the most recent geologic studies of the upper Arkansas River valley, between Leadville and Salida, Colorado. The valley is structurally controlled by an extensional fault system that forms part of the prominent northern Rio Grande rift, an intra-continental region of crustal extension. This work also incorporates new detailed geologic mapping of poorly understood areas within the map area and reinterprets previously studied areas, aided by lidar data that covers 59 percent of the map area. The mapped region extends into the Proterozoic metamorphic and intrusive rocks in the Sawatch Range west of the valley and the Mosquito Range to the east. Paleozoic... Categories: Data; Tags: 207Pb/206Pb zircon age, 40Ar/39Ar age, Arkansas River, Balltown, Balltown placer gold mining areas, All tags... Belle of Granite Mine, Big Union Creek, Bishop ash, Black Cloud Mine, Black Mountain, Browns Canyon, Browns Canyon fluorspar mining district, Browns Creek, Buckskin Gulch, Buena Vista, Buffalo Creek, Buffalo Peaks, Bull Lake glaciation, Cache Creek, California Gulch, California Mine, Centerville, Chaffee County, Chalk Creek, Clear Creek, Clear Creek Reservoir, Colorado, Cottonwood Creek, Dry Union Gulch, Eagle County, Eagle River, East Fork Arkansas River, Eddy Creek, Elephant Rock, Fremont County, Front Range, Garfield, Garfield Mine, Garfield mining district, Gordon Mine, Granite, Granite mining district, Granite placer gold mining areas, Hayden Gulch, Homestake Reservoir, Iowa Gulch, Johnson Village, Lake County, Lake Creek, Langhoff Gulch, Lava Creek B ash, Leadville, Leadville mining district, Lilly Mine, London Mine, Malta, Maysville, Mesozoic rocks, Morrison Creek, Mosquito Range, Mount Aetna, Mount Antero, Mount Antero mining district, Mount Princeton, Mount Shavano, Mount Yale, Paleozoic rocks, Park County, Pine Creek, Pinedale glaciation, Pitkin County, Poncha Springs, Proterozoic rocks, Quaternary deposits, Rio Grande rift, Riverside, Rock Creek, Ruby Mine, Ruby Mountain, San Juan Mountains, Sangre de Cristo Range, Sawatch Range, Sedalia Mine, Sedalia copper-zinc mining district, South Arkansas River, South Park, South Platte River, Squaw Creek, St. Kevin mining district, Structural Geology, Sugar Loaf mining district, Sugarloaf Mountain, Tennessee Creek, Tertiary rocks, Triad Ridge, Trout Creek, Trout Creek Pass, Trout Creek paleovalley, Tumble Creek, Turquoise Lake, Twin Lakes Reservoir, Twin Lakes mining district, Two Bits mining district, USA, USGS Science Data Catalog (SDC), United States, Western Alma mining district, Weston Pass, Weston Pass mining district, Yankee Blade Mine, alluvial deposits, alluvium, andesite, artificial-fill deposits, augen gneiss, basalt, basin-fill deposits, breccia, colluvium, copper, cosmogenic surface-exposure age, dacite, debris flow, debris-flow deposits, diamicton, diorite, eolian deposits, fan deposits, fault, faulting, fluorspar, fluvial deposits, gabbro, glacial deposits, glacial flood deposits, glacial flood gravel, glaciofluvial deposits, gneiss, gold, graben, granite, granitic gneiss, granodiorite, gravel, hydrologic hazards, hypabyssal rhyolite, intrusive rock, lahar deposit, lamprophyre, landslide deposits, latite, lava, lead, leucogranite, leucogranite gneiss, lidar imagery, man-made deposits, mass-movement deposits, mass-movement hazards, metabasalt, metagabbro, metaigneous rocks, metasedimentary rocks, metavolcanic rocks, microtonalite, mine, mine-waste deposits, mineral deposits, mining district, monzodiorite, monzogranite, monzonite, mud-flow deposits, neotectonics, ore, outwash, outwash gravel, peat deposits, pegmatite, periglacial, placer gold, placer-tailings deposits, porphyry, pre-Bull Lake glaciation, quartz diorite, quartz latite, quartzite, rhyodacite, rhyolite, rift, rock-glacier deposits, sackungen, sand and gravel resources, scarp, schist, sedimentary rocks, seismic hazards, silver, smelter-slag deposits, soil, surficial deposits, talus deposits, till, tuff, volcanic ash, volcanic breccia, volcanic rock, weathering, wetland deposits, zinc, Fewer tags Data release for Surficial Geology of the Northern San Luis Valley, Saguache, Fremont, Custer, Alamosa, Rio Grande, Conejos, and Costilla Counties, Colorado 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... Blanca Peak, Bull Lake glaciation, Center, Chiquita Peak, Colorado, Conejos County, Conejos River, Costilla County, Crestone, Custer County, Del Norte, Fort Garland, Fremont County, Geomorphology, Glaciology, Great Sand Dunes, Greenie Ridge, Hayden Pass, Huckleberry Ridge Tuff, La Jara Creek, La Veta Pass, Lake Alamosa, Lava Creek B, Medano Creek, Medano Pass, Mineral Hot Springs fault, Miocene volcanics, Moffet, Monte Vista, Mosca Pass, Orient Iron Mine, Pinedale Glaciation, Pleistocene Glaciation, Pleistocene river incision, Pliocene volcanics, Poncha Pass, Rio Grande, Rio Grande County, Rio Grande incision, Rio Grande rift, Rocky Mountain glaciation, Saguache, Saguache County, Saguache Creek, San Juan Mountains, San Juan volcanic field, San Luis Creek, San Luis Lakes, San Luis Valley, San Luis basin, Sand Creek, Sangre de Cristo Mountains, Sangre de Cristo fault, Sangre de Cristo fault system, Santa Fe Group, Servilleta Basalt, Soil Sciences, Structural Geology, Taos Plateau volcanic field, Terrace Reservoir, Tusas Mountains, USA, USGS Science Data Catalog (SDC), United States, Valley View Hot Springs, Villa Grove, Villa Grove fault zone, Zapata Creek, Zapata Falls, active fault, landslides, marine oxygen isotope stage 10, marine oxygen isotope stage 11, marine oxygen isotope stage 12, marine oxygen isotope stage 2, marine oxygen isotope stage 5, marine oxygen isotope stage 6, marine oxygen isotope stage 7, marine oxygen isotope stage 8, marine oxygen isotope stage 9, marine-terrestrial marine isotope correlation, middle Pleistocene glaciation, neotectonics, pre-Bull Lake glaciation, soil carbonate, Fewer tags