- Usage in publication:
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- Perdiz Conglomerate
- Modifications:
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- Areal extent
- AAPG geologic province:
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- Permian basin
Summary:
Perdiz Conglomerate mapped in the southeastern part of the mapped area, Presidio Co, west TX in Permian basin. Is a fanglomerate of highly variable composition shed mostly northeastward from Chinati Mountains in Cuesta del Burro region. Thickness is to about 500 ft. Shown on Correlation of Map Units as above Petan Basalt. [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.] Is of Tertiary age [shown as younger than Oligocene, older than Quaternary.] 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.
"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).
Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).