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Geologic Unit: Dewitt
Map showing publication footprint
  • Usage in publication:
    • Dewitt formation*
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Sand
  • AAPG geologic province:
    • Gulf Coast basin
Publication:

Deussen, Alexander, 1914, Geology and underground waters of the southeastern part of the Texas Coastal Plain: U.S. Geological Survey Water-Supply Paper, 335, 365 p., (incl. geologic map, scale 1:500,000)


Summary:

Pg. 28, 74-76. Dewitt formation. All lacustrine and littoral sediments deposited on Coastal Plain of Texas during Miocene and early Pliocene time. Cross-bedded, coarse, gray, semi-indurated, highly calcareous sandstones, with lenses of clay in places. Thickness 1,250 to 1,500 feet. Seaward the time equivalent is represented by marine sands and clays, but these are not included in Dewitt formation. Unconformably underlies Uvalde formation and overlies Fleming clay.
[Named from Dewitt Co., eastern TX.]

Source: US geologic names lexicon (USGS Bull. 896, p. 606).


Map showing publication footprint
  • Usage in publication:
    • Dewitt formation[†]
  • Modifications:
    • [Abandoned]
  • AAPG geologic province:
    • Gulf Coast basin
Publication:

Wilmarth, M.G., 1930, [Selected Geologic Names Committee remarks (ca. 1900-1933) on Tertiary deposits of the Gulf Coastal Plain], IN Wilmarth, M.G., 1938, Lexicon of geologic names of the United States (including Alaska): U.S. Geological Survey Bulletin, 896, pts. 1-2, 2396 p.


Summary:

Dewitt formation. In USGS Prof. Paper 126, 1924, footnotes on p. 97 and 100, is statement that Dewitt formation of USGS Water Supply Paper 335 included Oakville, Lapara, and Lagarto formations.

Source: US geologic names lexicon (USGS Bull. 896, p. 606).


  • Usage in publication:
    • Dewitt Formation†
  • Modifications:
    • Abandoned
  • AAPG geologic province:
    • Gulf Coast basin
Publication:

GNC Staff, 1967, [U.S. Geologic Names Committee remarks]: U.S. Geological Survey Bulletin, 1294-A, 55 p.


Summary:

Dewitt Formation (Miocene and Pliocene) of eastern Texas abandoned. Formation was named by Deussen (1914). In subsequent work by Deussen the name was not used nor was it ever used by any other author. Abandoned for nonuse.

Source: Changes in stratigraphic nomenclature, 1968 (USGS Bull. 1294-A, p. A6.)


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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