Usage:
Anamosa Member of Gower Formation (IL,IA)
Geologic age:
early Silurian (Wenlock)
Type section, locality, area and/or origin of name:
Named from Anamosa, Jones Co., IA (Calvin, 1895).
Type locality: Stone City, in SW/4 SE/4 NE/4 and NE/4 NE/4 NE/4 sec. 6, T. 84 N., R. 4 W., 1.5 mi west of Anamosa, Jones Co., east-central IA (Bunker and others, 1985).
AAPG geologic province:
Iowa shelf
Wisconsin 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 ([ ]).