Second-day trip 2 road log: From Albuquerque to San Ysidro, Loma Creston, La Ceja, and Sand Hill Fault
— Frank J. Pazzaglia, Sean D. Connell, John Hawley, Richard H. Tedford, Steve Personius, Gary A. Smith, Steve Cather, Spencer G. Lucas, Patricia Hester, John Gilmore, and Lee Woodward

This field trip will examine in detail the Neogene stratigraphy, sedimentology, structure, and geomorphology of the Albuquerque basin as exposed along the lower Rio Jemez valley and vicinity. Recent geologic mapping by the State of New Mexico, U.S. Geological Survey, New Mexico Bureau of Mines and Mineral Resources, University of New Mexico, New Mexico Tech, and the American Museum of Natural History has greatly enhanced our knowledge of the geologic processes responsible for rift-basin genesis and sedimentation. The ultimate goal of the mapping effort, and the sometimes tedious effort to develop a viable stratigraphy for continental basin-fill sediments (essentially a big pile of sand and gravel), is to provide a framework for understanding and better managing the finite ground-water resources of a semi-arid region. This trip will also present revisions to the stratigraphic nomenclature for the Santa Fe Group in the northern Albuquerque basin.