Usage:
Charlton Formation (FL*,GA*)
Charlton Member of Coosawhatchie Formation (FL,GA)
Geologic age:
Tertiary*
Pliocene*
Miocene
Type section, locality, area and/or origin of name:
Named from development in Charlton Co., southeastern GA. Notable exposures along the banks and bluffs of the St. Marys River from Stokes Ferry [now Stokes Bridge], 11 mi south of St. George, Charlton Co., GA, to Orange Bluff, near Kings Ferry, FL (Veatch and Stephenson, 1911).
Reference section (subsurface): depth-interval +1 to -13 m, Cassidy No. 1 core W-13815, in NW/4 NW/4 sec. 32, T. 3 N., R. 24 E., Nassau Co., FL (Scott, 1988).
AAPG geologic province:
Florida platform*
South Georgia sedimentary province*
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 ([ ]).