Usage:
Underwood Bed of Clegg Creek Member of New Albany Shale (IN)
Geologic age:
Early Mississippian (Kinderhookian)
Type section, locality, area and/or origin of name:
Type section: 2 mi (3.2 km) southeast of Underwood, in SE/4 sec. 21, T. 2 N., R. 7 E., Otisco quadrangle, Clark Co., IN (Campbell, 1946; see also N.R. Hasenmueller, 1986, Indiana Geol. Survey Bull., no. 59, p. 158-159).
AAPG geologic province:
Cincinnati 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 ([ ]).