- Usage in publication:
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- Goat Canyon Formation
- Modifications:
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- Areal extent
- Geochronologic dating
- AAPG geologic province:
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- Permian basin
Summary:
Goat Canyon Formation mapped in the Davis Mountains area, Jeff Davis Co, west TX in Permian basin. Consists of porphyritic-aphanitic trachyte, with white alkali feldspar phenocrysts, hard, gray to greenish gray; weathers platy, grayish white to yellow brown. Thickness 515 ft at type section in Goat Canyon, southern Davis Mountains. 8 mi to east thins to 100 ft. K-Ar age of 36.8 +/-0.7 m.y. obtained. [Unclear on Correlation of Map Units if Goat Canyon is part of Vieja Group.] Shown as above Medley Formation and below Brooks Mountain Formation. [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.
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