Usage:
Jacobs Chapel Bed of Clegg Creek Member of New Albany Shale (IN)
Jacobs Chapel Bed of Ellsworth Member of New Albany Shale (IN)
Jacobs Chapel bed (informal) of Clegg Creek Member of New Albany Shale (KY)
[?] Jacobs Chapel Bed of Grassy Creek Shale Member of New Albany Shale of Knobs Group (IL-southern part)
For informal usage, the rank or lithologic term should not be capitalized.
Geologic age:
Early Mississippian (Kinderhookian)
Type section, locality, area and/or origin of name:
Type section: 1 mi west of Jacobs Chapel Church, in lot 85, Clark Grant, Clark Co., IN (Campbell, 1946).
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 ([ ]).