U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database
Geologic Unit: Dunkard
Search archives
Map showing publication footprint
  • Usage in publication:
    • Dunkard Creek series*
  • Modifications:
    • Named
  • AAPG geologic province:
    • Appalachian basin
Publication:

White, I.C., 1891, Stratigraphy of the bituminous coal field of Pennsylvania, Ohio, and West Virginia: U.S. Geological Survey Bulletin, 65, 212 p.


Summary:

Dunkard Creek series, on Dunkard Creek, Greene County, Pennsylvania, includes 165 feet concealed beds above Gilmore sandstone and extends down to base of Cassville shales.

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


Map showing publication footprint
  • Usage in publication:
    • Dunkard division
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Appalachian basin
Publication:

Norling, D.L., 1958, Geology and mineral resources of Morgan County, Ohio: Ohio Division of Geological Survey Bulletin, no. 56, 131 p.


Summary:

Permian strata in Ohio are grouped under term Dunkard, which has been given rank of group by the USGS, and of series in earlier publications of the Ohio Geological Survey. Washington and Greene subdivisions of Dunkard have been classified as formations. Latter are herein raised to series rank, thus making main subdivisions of Permian the same stratigraphic rank as those in Pennsylvanian. Dunkard becomes a sort of superseries and is superfluous. Term in Ohio is synonymous with term Permian. In this report, term Dunkard division is used in order to keep term under consideration until decision is made as to its validity in current stratigraphic usage.

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


Map showing publication footprint
  • Usage in publication:
    • Dunkard Formation*
  • Modifications:
    • Revised
    • Areal extent
  • AAPG geologic province:
    • Appalachian basin
Publication:

Lyons, P.C., 1989, Geologic Map of the Sissonville quadrangle, Kanawha, Jackson, and Putnam Counties, West Virginia: U.S. Geological Survey Geologic Quadrangle Map, GQ-1660, scale 1:24,000 [http://ngmdb.usgs.gov/Prodesc/proddesc_1176.htm]


Summary:

Rank changed from Dunkard Group to Dunkard Formation for use in vicinity of Sissonville quadrangle, Kanawha, Jackson, and Putnam Counties, West Virginia.

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


Search archives

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 ([ ]).