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National Geologic Map Database

NGMDB

Geologic Unit: Archimedes

Usage:

No current usage.
(†Archimedes limestone (informal) (AR,IL,MO,OK) abandoned and replaced with Palestine Sandstone (IL), Ste. Genevieve Limestone (MO,IL), Warsaw Limestone (MO,IL), Keokuk Limestone (MO,IL) and Pitkin Limestone (AR,OK). See Palestine, Ste. Genevieve, Warsaw, Keokuk, and Pitkin.)


Geologic age:

Mississippian


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

Named from the fossil ARCHIMEDES (Simonds, 1891).


AAPG geologic province:

Illinois basin
Ozark uplift
Chautauqua platform
Arkoma basin


NGMDB

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 ([ ]).

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