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National Geologic Map Database

Geologic Unit: Bedford

Usage:

Bedford Shale (KY*,MI*,OH*,PA*,TN*,VA*,WV*)
Bedford Formation (OH*,WV*,MI*)
Bedford Shale Member of Chattanooga Shale (KY)


Geologic age:

Late Devonian (Famennian)*


Type section, locality, area and/or origin of name:

Type locality: near Bedford, along Tinkers Creek on east side of Cuyahoga River opp. town of Independence, Bedford Twp., [Cleveland 15-min quadrangle], Cuyahoga Co., eastern OH (de Witt, 1951; Pepper and others, 1954; see Newberry, 1870).
Named from Bedford, [Cleveland 15-min quadrangle], Cuyahoga Co., eastern OH (US geologic names lexicon, USGS Bull. 896).


AAPG geologic province:

Appalachian basin*
Michigan basin*


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 ([ ]).