- Usage in publication:
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- Mount Locke Formation
- Modifications:
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- Areal extent
- AAPG geologic province:
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- Permian basin
Summary:
Mount Locke Formation mapped in the Davis Mountains area, Jeff Davis Co, west TX in the Permian basin. Consists of quartz trachyte and rhyolite porphyry, gray, weathered surface rough, brownish gray to reddish brown. Thickness 580 ft at type locality; thins rapidly westward and southwestward. [Unclear on Correlation of Map Units if Mount Locke is part of Vieja Group.] [Author states that correlation of volcanic rocks from area to area on Marfa sheet is uncertain--little attempt is made to correlate between areas. The rocks are described by area.] Of Oligocene age. Geologic map.
Source: GNU records (USGS DDS-6; Denver GNULEX).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
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