Usage:
Hagarstown Member of Glasford Formation (IL)
[?] Hagarstown Member of Pearl Formation (IL)
Geologic age:
Quaternary
Pleistocene, middle
Illinoian
Type section, locality, area and/or origin of name:
Hickory Ridge section [of Jacobs and Lineback, 1969, p. 20], in SW/4 NW/4 sec. 30, T. 6 N., R. 1 E., Fayette Co., IL. Named from Hagarstown, Fayette Co., IL, [5 mi west of type section] (Willman and Frye, 1970).
AAPG geologic province:
Illinois basin
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 ([ ]).