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National Geologic Map Database

Geologic Unit: Root

Usage:

Root Shale of Wabaunsee Group (IA,KS*,NE*)
Root Shale of /Richardson subgroup [informal] of Wabaunsee Group (KS)

["Subgroup" not recognized as a formal stratigraphic rank term (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). Richardson subgroup considered informal and should not be capitalized.]


Subunits:

(alphabetical) --all in IA,KS*,NE*: French Creek Member, Friedrich Member, Jim Creek Limestone Member.


Geologic age:

Late Pennsylvanian (Virgilian)*


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

Type section: in roadcut along east-flowing stream near center of N/2 SE/4 sec. 20, T. 21 S., R. 11 E., Lyon Co., east-central KS. Named from Root Station on the Atchison, Topeka, and Santa Fe RR, in SE/4 sec. 23, T. 21 S., R. 11 E., Lyon Co., east-central KS (Moore and Mudge, 1956).


AAPG geologic province:

Forest City 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 ([ ]).