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National Geologic Map Database

Geologic Unit: Lamotte

Usage:

Lamotte Formation (IL*,MO*)
Lamotte Sandstone (subsurface of AR*,CO*,IL,KS*,MO*,NE,OK*,TX*)
Lamotte Sandstone (MO*-exposed locally in St. Francois Mountains area)
Spelled La Motte and LaMotte in early reports.


Geologic age:

Middle Cambrian*


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

Named from Mine La Motte Station, Madison Co., southeastern MO (US geologic names lexicons, USGS Bull. 896, 1200).


AAPG geologic province:

Anadarko basin*
Central Kansas uplift*
Chautauqua platform*
Cherokee basin*
Denver basin
Forest City basin*
Illinois basin*
Las Animas arch*
Las Vegas-Raton basin*
Lincoln anticline
Nemaha anticline*
Ozark uplift*
Palo Duro basin*
Salina basin
Sedgwick basin*
Upper Mississippi embayment


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 ([ ]).