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National Geologic Map Database

Geologic Unit: Fernvale

Usage:

Fernvale Formation (AL*,MO*,TN*)
Fernvale Limestone (AL*,AR*,IL*,MO*,OK*,TN*)
Fernvale Limestone Member of Sequatchie Formation (AL)
Fernvale Member of Shellmound Formation (GA,TN)


Geologic age:

Late Ordovician (Cincinnatian;
Edenian to Maysvillian)*


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

Type area: Fernvale, Williamson Co., TN (Hayes and Ulrich, 1903).


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 ([ ]).