Usage:
[?] Nutwood Shale Bed of Hannibal Shale Member of New Albany Shale of Knobs Group (IL)
Geologic age:
Early Mississippian (Kinderhookian)
Type section, locality, area and/or origin of name:
Named from exposures along creek that flows through "The Narrows" just northeast of Nutwood, in SE/4 NE/4 sec. 33 and SW/4 NW/4 sec. 34, T. 8 N., R. 13 W. [area around Lat. 39 deg. 05 min. 42 sec. N., Long. 90 deg. 32 min. 12 sec. W., Nutwood 7.5-min quadrangle], and in bluff behind Tenneriffe School, in northwest corner sec. 9, T. 7 N., R. 13 W. [approx. Lat. 39 deg. 04 min. 18 sec. N., Long. 90 deg. 33 min. 21 sec. W., Hardin 15-min quadrangle, 1956 ed.], Jersey Co., west-central IL. Occupies limited area on Ozark uplift and Vandalia arch, extending northeastward from Mississippi River to Christian Co., west-central IL (Workman and Gillette, 1956).
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 ([ ]).