Usage:
Penney Farms Formation of Hawthorn Group (FL*)
Geologic age:
Tertiary (late Oligocene or early Miocene)*
Type section, locality, area and/or origin of name:
Type section (subsurface): depth-interval -118 to -205 ft MSL, Harris No. 1 core W-13769, near town of Penney Farms, in SW/4 SE/4 sec. 7, T. 6 S., R. 25 E., central Clay 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 ([ ]).