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National Geologic Map Database
Map showing publication footprint
  • Usage in publication:
    • Lee Valley Group
  • Modifications:
    • Named
  • Dominant lithology:
    • Dolomite
    • Limestone
  • AAPG geologic province:
    • Appalachian basin
    • Cincinnati arch
Publication:

Calvert, W.L., 1962, Sub-Trenton rocks from Lee County, Virginia to Fayette County, Ohio: Ohio Division of Geological Survey Report of Investigations, no. 45, 57 p.


Summary:

Named the Lee Valley Group of the Knox Supergroup in TN and OH subsurface for Lee Valley Post Office, Hawkins Co., northeastern TN. Group is defined as that body of generally pure, partly oolitic, partly cherty dolomite and some limestone which composes the Maynardville Limestone and Copper Ridge Dolomite. Overlies "Knox Clastic Group" and underlies Chepultepec Dolomite of Beekmantown Group. The Lee Valley is of Late Cambrian age.

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


Map showing publication footprint
  • Usage in publication:
    • Lee Valley Group
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Cincinnati arch
Publication:

Coogan, A.H., and Maki, M.U., 1988, Knox unconformity in the subsurface of northern Ohio: Northeastern Geology, v. 10, no. 4, p. 271-280.


Summary:

The Lee Valley Group of the Knox Supergroup in the subsurface of OH is divided into the (ascending) Maynardville Dolomite and Copper Ridge Dolomite. The Knox Supergroup consists of the Lee Valley Group in its lower part and the Beekmantown Group in the upper part.

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 ([ ]).