Hutchins member [informal] of Austin Chalk (TX)
Considered informal. The rank or lithologic term should not be capitalized.
Late Cretaceous (Gulfian Provincial Epoch, Austinian Provincial Age)
Not stated by author. Origin of name not stated by author (Murray, 1961).
Ouachita folded belt
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 ([ ]).