Usage:
Flint Hill sandstone facies (informal) in Blackwater Creek Shale Member of Little Osage Formation of /Fort Scott subgroup [informal] of Marmaton Group (MO)
Informal. The rank or lithologic term should not be capitalized. ["Subgroup" not recognized as a formal stratigraphic rank term (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). Fort Scott subgroup considered informal and should not be capitalized.]
Geologic age:
Middle Pennsylvanian (Desmoinesian)
Type section, locality, area and/or origin of name:
Type section: in W/2 SW/4 sec. 11, T. 50 N., R. 13 W., [about 5.5 mi east of Harrisburg, Sturgeon 7.5-min quadrangle], Boone Co., central MO. Named from Flint Hill near Flint Hill School, northern Boone Co. (Unklesbay, 1952).
[Greene and Searight (1949) state type section is in NW/4 SE/4 sec. 11. Thompson and Gentile (2004) state type appears to be a composite of 2 sections: (1) upper part measured in west bluff of small stream in SW/4 SW/4 sec. 11; (2) lower, and best section, in roadcuts on south side MO Highway 124 in center W/2 SW/4 sec. 11.]
Reference section: along west-facing highwall of abandoned coal surface mine on MO Natl. Guard property, 1.5 mi west of U.S. Highway 63, 2.5+ mi southwest of south edge of Macon, in SW/4 NE/4 sec. 5, T. 56 N., R. 14 W., Macon 7.5-min quadrangle, Macon Co., central MO (Thompson and Gentile, 2004).
AAPG geologic province:
Lincoln anticline
Ozark uplift
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 ([ ]).