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National Geologic Map Database

Geologic Unit: Dos Alamos

Usage:

No current usage.
(Rocks of †Dos Alamos Gypsum (TX) reallocated to Cutoff Shaly Member of Bone Spring Limestone [now Cutoff Shale or Cutoff Formation]. See Cutoff.)


Geologic age:

Early to Middle Permian (Cisuralian to Guadalupian; Kungurian to Roadian)


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

Named from Dos Alamos, west of Guadalupe Point on west side of Salt Flat, Sierra Diablo area, TX, where unit is exposed (King and King, 1929).


AAPG geologic province:

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 ([ ]).