South Rim Formation of Big Bend Park Group (TX)
South Rim Volcanics (TX-applied locally in southwestern TX, notably Trans-Pecos area, Big Bend National Park)
(alphabetical) --all in TX: Burro Mesa Riebeckite Rhyolite Member, Lost Mine Rhyolite Member, Perdiz Conglomerate Member, Pine Canyon Rhyolite Member, Wasp Spring Flow Breccia Member.
Tertiary
Oligocene
Not synopsized to date.
Permian basin
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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