Usage:
Gulfian Series*
Subunits:
(ascending): Woodbine Formation, Eagle Ford Group, Austin Group, Taylor Group, Navarro Group. See fig. 1 (Hill, 1901) for detailed stratigraphic affiliations.
Geologic age:
Late Cretaceous (Cenomanian to Maastrichtian)*
Type section, locality, area and/or origin of name:
None designated. Described as seen by R.T. Hill from east to west along the line of the Texas Pacific RR from Van Zandt Co., to a point 8 mi west of Arlington, TX (Hill, 1887).
AAPG geologic province:
North America
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 ([ ]).