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National Geologic Map Database
Map showing publication footprint
  • Usage in publication:
    • Bokchito formation*
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Clay
    • Sandstone
    • Limestone
    • Ironstone
  • AAPG geologic province:
    • Ouachita folded belt
Publication:

Taff, J.A., 1902, Atoka folio, Indian Territory: U.S. Geological Survey Geologic Atlas of the United States Folio, GF-79, 8 p., scale 1:125,000


Summary:

Bokchito formation. Chiefly clay and sandy clay, with beds of friable sandstone, siliceous shell limestone, and iron-stone segregations and concretions. Thickness 140 feet. Underlies Bennington limestone and overlies Caddo limestone. Recognized in southeastern and central southern Oklahoma. Age is Early Cretaceous (Comanche).
[Named from Bokchito Creek, near Bockchito, Bryan Co., central southern OK.]

Source: US geologic names lexicon (USGS Bull. 896, p. 228).


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 ([ ]).