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 …