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Map showing publication footprint
  • Usage in publication:
    • Fork Ridge sandstone* member
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Sandstone
  • AAPG geologic province:
    • Appalachian basin
Publication:

Ashley, G.H., and Glenn, L.C., 1906, Cumberland Gap coal field, Kentucky: U.S. Geological Survey Professional Paper, 49, 239 p. [Available online from the USGS PubsWarehouse: http://pubs.er.usgs.gov/pubs/pp/pp49]


Summary:

Pg. 31, 33, 39, 40. Fork Ridge sandstone member of Mingo formation of Pottsville group. Cliff-making sandstone in Mingo formation, lying about 40 feet below Mingo coal. Thickness few feet to 50 feet. Age is Pennsylvanian.
[Named from Fork Ridge, Bell Co., southeastern KY. Extends into northeastern TN.]

Source: US geologic names lexicon (USGS Bull. 896, p. 754).


Map showing publication footprint
  • Usage in publication:
    • Fork Ridge Sandstone Member*
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Appalachian basin
Publication:

Wanless, H.R., 1946, Pennsylvanian geology of a part of the southern Appalachian coal field: Geological Society of America Memoir, 13, 162 p.


Summary:

Pg. 82, 83, 89, 140. Fork Ridge Sandstone Member of Mingo formation. In Mingo formation above 40 feet below Mingo coal. Recognized in southeastern Kentucky and northeastern Tennessee. Age is Pennsylvanian.

Source: US geologic names lexicon (USGS Bull. 1200, p. 1389).


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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