Pg. 1764 (table 2). Caseyville group includes (ascending) Lusk, Battery Rock, and Pounds cyclothems.
Source: US geologic names lexicon (USGS Bull. 1200, p. 237).
Pg. 5, 9, pl. 1. Battery Rock cyclothem. Includes (ascending) Battery Rock (Lick Creek) sandstone or conglomerate, Sellers limestone, Battery Rock coal, and Drury shale. Age is Pennsylvanian. Type locality designated.
Type locality: in sec. 26, T. 11 S., R. 2 E., Hardin Co., southern IL.
Source: US geologic names lexicon (USGS Bull. 1200, p. 237).
Pg. 52 (table 2), 64 (table 3), pl. 1. Battery Rock cyclothem. Recognized in southwestern and southeastern Illinois. Occurs above Lusk cyclothem and below Pounds cyclothem. Age is Pennsylvanian. Report presents new rock-stratigraphic classification of Pennsylvanian strata in Illinois. Cyclical classification retained but is entirely independent of rock-stratigraphic classification; includes rocks also assigned to Caseyville formation of McCormick group (new).
Source: Publication; US geologic names lexicon (USGS Bull. 1200, p. 237).
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 ([ ]).