Volume 85, Issue 3 (2013)At Persimmon Gap, the northern entrance of Big Bend National Park in West Texas, Cretaceous Glen Rose Limestone (crags), Ordovician Maravillas Formation, and Carboniferous Tesnus Formation (core) are folded in a Laramide overturned anticline. A low-angle Laramide thrust fault near the base of mountain truncates Glen Rose Limestone ridges. Related Laramide folds crop out on and near Dagger Mountain, 13 km to the south. Photo is by Joseph Satterfield, Angelo State University, San Angelo, Texas.
Polyphase Laramide Structures and Possible Folded Tertiary(?) Sills at Dagger mountain, Big Bend National Park, Texas
Jeff Cullen, Nathan K. Knox, Jacob Crouch, and Joseph I. Satterfield
- Larry E. Davis
- Aaron W. Johnson
- James C. Walters