U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

Geologic Unit: Leemon

Usage:

Leemon Formation of Edgewood Group (MO*,IL)
Leemon Formation (IL*)


Geologic age:

Ordovician, Late*
Hirnantian*
Cincinnatian*


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

Type section: 100 m below head of drainage and 100 m east of barn, in SE/4 NE/4 SW/4 sec. 21, T. 32 N., R. 13 E., Cape Girardeau Co., eastern MO. Named from town of Leemon, 3.2 km northeast of type section (Thompson and Satterfield, 1975).


AAPG geologic province:

Ozark uplift*
Illinois basin*


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).