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National Geologic Map Database
Geologic Unit: Chemung
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Map showing publication footprint
  • Usage in publication:
    • "Chemung"
  • Modifications:
    • Areal extent
    • Not used
  • AAPG geologic province:
    • Appalachian basin
Publication:

Boswell, R.M., Donaldson, A.C., and Lewis, J.S., 1987, Subsurface stratigraphy of the Upper Devonian and Lower Mississippian of northern West Virginia: Southeastern Geology, v. 28, no. 2, p. 105-131.


Summary:

Term "Chemung" replaced in subsurface of WV, west of Allegheny Front by Greenland Gap Formation, which is here reduced in rank in study area--Tyler, Harrison, and Preston Cos.

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


Map showing publication footprint
  • Usage in publication:
    • Chemung Formation*
  • Modifications:
    • Biostratigraphic dating
  • AAPG geologic province:
    • Appalachian basin
Publication:

Harris, A.G., Stamm, N.R., Weary, D.J., Repetski, J.E., Stamm, R.G., and Parker, R.A., 1994, Conodont color alteration index (CAI) map and conodont-based age determinations for the Winchester 30' x 60' quadrangle and adjacent area, Virginia, West Virginia, and Maryland: U.S. Geological Survey Miscellaneous Field Studies Map, MF-2239, 1 sheet, 40 p., scale 1:100,000 [http://ngmdb.usgs.gov/Prodesc/proddesc_294.htm]


Summary:

Conodont biostratigraphy indicates that the Chemung Formation in the Winchester 30 X 60 minute quadrangle is of Late Devonian (Frasnian) age. Conodonts from the lower part of the unit are indicative of the upper part of the Upper M. FALSIOVALIS Zone to the Lower PA. HASSI Zone.

Source: GNU records (USGS DDS-6; Reston 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 ([ ]).