Persimmon Gap in Big Bend National Park, Texas; Ouachita facies and Cretaceus cover deformed in a Laramide overthrust
Peter R. Tauvers, William R. Muehlberger, 1988. "Persimmon Gap in Big Bend National Park, Texas; Ouachita facies and Cretaceus cover deformed in a Laramide overthrust", South-Central Section of the Geological Society of America, O. T. Hayward
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Persimmon Gap is unique in that the effects of three major Persimmon Gap. A wind gap that was part of the historic orogenies are exposed. A Paleozoic inlier features the southern- Comanche Trail crosses the southern Santiago Mountains at the most exposed thrust faults (Upper Ordovician over Lower Pennnorthern entrance to Big Bend National Park. The Persimmon sylvanian) of the Ouachita system in Texas. These rocks and the Gap site is 42 mi (68 km) south of Marathon, Texas, along U.S. Cretaceus cover (predominantly limestone) were involved in 385 (Fig. 1). The main outcrop is a prominent peak 0.5 mi (0.8 oblique overthrusting during Laramide left-slip transgression, lokm) east of the highway that can be reached easily by walking up tally creating a positive flower structure. Right-slip transtensional an arroyo into the hills (Fig. 2). Beware of cactus! Permission to faulting of the present cycle of Basin and Range deformation is walk off road should first be obtained at Persimmon Gap Ranger evident via downdropped fault blocks. The geologic history of the station 0.2 mi (0.3 km) south of the outcrop. The park has a region is dominated by repeated movements of basement-rooted nominal entrance fee. northwest-trending faults.
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South-Central Section of the Geological Society of America
One of six volumes generated by each GSA section for the Decade of North American Geology (DNAG) project, this Centennial Field Guide contains descriptions of 100 sites or site clusters representing outstanding geologic locations in Arkansas, Kansas, Oklahoma, and Texas.