Usage:
Bryantsville Breccia Bed of Ste. Genevieve Limestone (IN*,KY*)
Bryantsville Breccia Bed of Karnak Member of Ste. Genevieve Limestone (IN)
Geologic age:
Middle Mississippian (Visean; early Chesterian)*
Type section, locality, area and/or origin of name:
Type exposures: north side of U.S. Highway 50, about 1 mi southwest of Bryantsville, in NW/4 NW/4 sec. 25, T. 4 N., R. 2 W., Lawrence Co., IN; Richard Burton quarry section, in SW/4 NW/4 sec. 20, T. 4 N., R. 1 W., north of road, 1.25 mi east of Bryantsville; Hixon quarry, 2 mi east of Bryantsville (Patton, 1952).
AAPG geologic province:
Illinois basin*
Cincinnati arch*
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 ([ ]).