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National Geologic Map Database

Geologic Unit: Cockfield

Usage:

Cockfield Formation of Claiborne Group (AL*,AR*,KY*,LA*,MS*,MO*,TN*,TX)
Cockfield Formation of Yegua Group (TX)
Originally called Cocksfield Ferry Beds.


Subunits:

(alphabetical): Creola Member (LA,MS), Kilpatrick Lentil (LA), Sugar Creek Lentil (LA).


Geologic age:

early Tertiary (middle Eocene)*


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

Named from Cockfield Ferry (correct spelling), on Red River, near Petite Ecore, Winn [Parish], northwestern LA (US geologic names lexicons, USGS Bull. 896, 1200).


AAPG geologic province:

Arkla basin*
Gulf Coast basin
Mid-Gulf Coast basin*


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 ([ ]).