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National Geologic Map Database
Map showing publication footprint
  • Usage in publication:
    • Fletcher Anhydrite Member*
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Permian basin
Publication:

Madsen, B.M., and Raup, O.B., 1988, Characteristics of the boundary between the Castile and Salado Formations, southeastern New Mexico: New Mexico Bureau of Mines and Mineral Resources, New Mexico Geology, v. 10, no. 1, p. 1-5, 9.


Summary:

Boundary between Castile Formation (below) and Salado Formation (above) placed at base of an anhydrite marker by Lang (1942), Fletcher Anhydrite Member (Upper Permian or Ochoan) of Salado. Fletcher not recognized throughout the basin.

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 ([ ]).

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