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

Data Release for Luminescence: Plio-Pleistocene Hydrology and Marine Isotope Stage (MIS) 4 Deep Springs Lake, Western Great Basin, Inyo County, California

Deep Springs Valley (DSV) is a hydrologically isolated valley between the White (north and west) and Inyo (south and east) Mountains that is commonly excluded from regional paleohydrologic and paleoclimate studies. Previous studies showed that uplift of Deep Springs ridge (informal name) by the Deep Springs fault defeated streams crossing DSV and hydrologically isolating the valley sometime after eruption of the Bishop Tuff. Here we present tephrochronology, clast counts, paleontology, and infrared stimulated luminescence (IRSL) data that reaffirms interruption of the Plio-Pleistocene hydrology and formation of DSV during the Pleistocene. Fossil gastropod, ostracodes, and charophytes along with IRSL dating document...

Categories: Data; Tags: Bishop Tuff, Deep Springs Valley, Geochemistry, Geomorphology, Hydrology, All tags... Inyo County, California, Inyo Mountains, Marine Geology, USGS Science Data Catalog (SDC), Wester Great Basin, White Mountains, age estimation methods, biota, geochronology, luminescence dating, optically-stimulated luminescence, radiation dosimetry, Fewer tags