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National Geologic Map Database

Geologic Unit: Exline

Usage:

Exline Limestone Member of Pleasanton Formation of Bronson Group (IA)
Exline Limestone Member of Shale Hill Formation of Pleasanton Group (KS?,MO)
Exline Limestone Member of Modesto Formation (IL)

Uncertain if Exline Ls. Mbr. of Shale Hill Fm. adopted by KS Strat. Names Com.


Geologic age:

Late Pennsylvanian (Missourian)


Type section, locality, area and/or origin of name:

About 1.5 mi south of the southwest corner of Exline, Appanoose Co., IA. Well exposed in a west-flowing tributary ravine of North Shoal Creek, in SE/4 sec. 6, T. 67 N., R. 17 W. (Cline, 1941, p. 65).


AAPG geologic province:

Iowa shelf
Forest City basin
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 ([ ]).