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Geologic Unit: Bayard
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  • Usage in publication:
    • Bayard formation*
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Sandstone
    • Shale
    • Limestone
  • AAPG geologic province:
    • Appalachian basin
Publication:

Darton, N.H., and Taff, J.A., 1896, Piedmont folio, Maryland-West Virginia: U.S. Geological Survey Geologic Atlas of the United States Folio, GF-28, 6 p., scale 1:125,000


Summary:

Bayard formation. A lower sandstone 196 feet thick; a middle division of shaly sandstone, shale, coal, and thin limestone 200 feet thick; and an upper sandstone, which is a beach deposit. Thickness 400 to 475 feet. Underlies Fairfax formation and overlies Savage formation. Age is Pennsylvanian.
Exposed all around Bayard, Grant Co., northeastern WV. Extends into western MD.
[GNC remark (ca. 1936, US geologic names lexicon, USGS Bull. 896, p. 127): Corresponds to lower part of Conemaugh formation.]

Source: US geologic names lexicon (USGS Bull. 896, p. 127).


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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