The San Luis Basin to the Española Basin - Third-day Road Log from Talpa to the Rio Grande del Rancho Valley, U.S. Hill, Vadito, and Peñasco
— Paul W. Bauer, Adam S. Read, Keith I. Kelson, Barry S. Kues, Scott B. Aby, Wiliam R. Muehlberger, Ren A. Thompson, George S. Austin, and Gary A. Smith

The last day of the conference begins in Taos and ends in Peñasco. On this tour we continue to explore the important Cenozoic structures and deposits in the southeastern San Luis Basin, including the pre- to early-rift Picuris Formation, the repeatedly reactivated Picuris-Pecos fault system, and late Laramide grabens. We will also stop to examine the superbly exposed fossiliferous Pennsylvanian strata near Talpa and discuss Ancestral Rockies sedimentation in the Taos trough. An optional stop at the mica mine near Vadito provides a look at the Proterozoic Rio Pueblo schist and a unique and controversial mining operation. The trip will end on Picuris Pueblo Tribal lands on a spectacular exposure of the Picuris Formation where we discuss early Cenozoic sedimentation and paleogeography as well as development of the Peñasco embayment. A supplemental log continues this tour from Peñasco south along the scenic high road to Española and points south.