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National Geologic Map Database

Geologic Unit: Fort Denaud

Usage:

Fort Denaud Member of Caloosahatchee Formation (FL)
Fort Denaud Member of Caloosahatchee Marl (FL)


Geologic age:

late Tertiary (late Pliocene)
Due to change in Plio-Pleistocene boundary, age may now be considered all or in part Pleistocene.


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

Named from exposures along stretch of Caloosahatchee River extending between point 0.5 mi and 3.5 mi upstream from Fort Denaud in Hendry Co., southern FL (DuBar, 1958).


AAPG geologic province:

Florida platform


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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).