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National Geologic Map Database

Geologic Unit: Alachua

Usage:

Alachua Formation (FL*)
Alachua clays (informal) (FL*)

For informal usage, the rank or lithologic term should not be capitalized.


Geologic age:

late Tertiary to Quaternary(?) (Miocene to Pleistocene?)*


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

Named from its many exposures in Alachua Co., northern FL (Dall and Harris, 1892; US geologic names lexicons, USGS Bull. 896, 1200).


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 ([ ]).