Usage:
Wyoming Hill Coal Member of Caseyville Formation of Morrow Supergroup (IA)
Geologic age:
Early Pennsylvanian (Morrowan)
Type section, locality, area and/or origin of name:
Type section: in an escarpment along IA Highway 22, in NE/4 sec. 34, T. 77 N., R. 1 W., Muscatine Co., IA (Ravn and others, 1984).
AAPG geologic province:
Iowa shelf
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 ([ ]).