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National Geologic Map Database

Geologic Unit: Merkel

Usage:

Merkel Dolomite Member of Choza Formation (TX)
Merkel Dolomite of Clear Fork Group (TX)
Spelled Merkle in some early reports.


Geologic age:

Early Permian (Cisuralian; Leonardian)


Type section, locality, area and/or origin of name:

Named from exposures just west of Merkel, [a station on the Texas and Pacific RR, Taylor Co.], central northern TX. Traced across country to Abilene-Sweetwater section, Taylor and Nolan Cos., and to Double Mountain section, Haskell and Stonewall Cos., central northern TX (Wrather, 1917).


AAPG geologic province:

Bend arch
Palo Duro basin
Permian basin


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).