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  • Usage in publication:
    • Patterson Ranch group
  • Modifications:
    • Named
  • Dominant lithology:
    • Limestone
    • Shale
  • AAPG geologic province:
    • South Oklahoma folded belt
Publication:

Decker, C.E., 1942, Arbuckle formations in the Ouachita Mountain region: Oklahoma Academy of Science Proceedings, v. 22, p. 153-155.


Summary:

Named for Patterson Ranch on south edge of Arbuckle Mountains on east side of U.S. Hwy 77, Murray Co[?], OK in the South Oklahoma folded belt province. No type locality designated. Proposed name for limestone-shale series of formations: Viola formation, Fernvale formation, and Sylvan shale. No discussion of lithology or thickness. No discussion of regional correlation. Overlies Simpson group; underlies Silurian Chimney Hill formation. Age is Ordovician.

Source: GNU records (USGS DDS-6; Denver GNULEX).


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 ([ ]).