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National Geologic Map Database
Geologic Unit: Mandata
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Map showing publication footprint
  • Usage in publication:
    • Mandata Formation
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Appalachian basin
Publication:

Smith, R.C., II, and Way, J.H., 1988, The Bald Hill Bentonite Beds; a Lower Devonian pyroclastic-bearing unit in the northern Appalachians: Northeastern Geology, v. 10, no. 3, p. 216-230.


Summary:

Beds A and B of the newly named Bald Hill Bentonite Beds occur within the New Scotland Formation in PA and WV and within the correlative Corriganville Limestone in MD. Bed C occurs near the base of the overlying Mandata in all three states. In NY, Beds A, B, and C occur within the middle member of the Kalkberg Limestone.

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 ([ ]).