U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database
Map showing publication footprint
  • Usage in publication:
    • Judy Gap Group
  • Modifications:
    • Named
  • Dominant lithology:
    • Sandstone
  • AAPG geologic province:
    • Appalachian basin
Publication:

Chen, Ping-fan, 1977, Lower Paleozoic stratigraphy, tectonics, paleogeography, and oil/gas possibilities in the Central Appalachians (West Virginia and adjacent states) part 1; stratigraphic maps: West Virginia Geological and Economic Survey Report of Investigations, no. 26-1, 141 p.


Summary:

Named the Judy Gap Group in WV for Judy Gap, Pendleton Co., WV. Unit includes (ascending) the Oswego Formation of Late Ordovician age (previously called gray Medina), Juniata Formation of Late Ordovician age (red Medina), and Tuscarora Formation of Early Silurian age (white Medina). Overlies Martinsburg Formation and underlies the Clinton Group.

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 ([ ]).