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National Geologic Map Database

Geologic Unit: High Bridge

Usage:

High Bridge Group (KY*)


Subunits:

(alphabetical) --all in KY*: Camp Nelson Limestone, Oregon Formation or Oregon Limestone or Oregon Dolomite, Tyrone Limestone.


Geologic age:

Late Ordovician (late Whiterockian to Mohawkian; late Chazyan to Kirkfieldian)*


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

Vicinity of High Bridge, in the Kentucky River gorge, southern Jessamine Co., KY (Campbell, 1898).


AAPG geologic province:

Cincinnati arch*


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"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 ([ ]).