Last Chance Canyon is a unique area that is critical to the understanding of lower Guadalupian sequence stratigraphy. The cutoff Formation as exposed here includes facies of the upper San Andres-lower Cherry canyon facies tract not exposed anywhere else in the Guadalupe Mountains. This study correlates the cutoff Formation in Last Chance canyon biostratigraphicly with other exposures of the Cutoff and uses that information along with sedimentological information to establish correlatable depositional sequences.Geolog
