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National Geologic Map Database

Geologic Unit: Deicke

Usage:

Deicke K-bentonite Bed of Spechts Ferry Shale Member of Decorah Formation of Galena Group (IL*,IA*,MN*,MO*,WI*)
Deicke K-bentonite Bed of Carimona Member of Decorah Formation of Galena Group (IA*,MN*)
Deicke K-bentonite Bed of Decorah Shale of Galena Group (IA*,MN*)
Deicke K-bentonite Bed of Castlewood Limestone Member of Spechts Ferry Formation of Decorah Group (IL*,MO*-notably in St. Louis region)
Deicke K-bentonite Bed of Spechts Ferry Shale Member of Decorah Formation of Sinnipee Group (WI)
Deicke K-bentonite Bed of Quimbys Mill Formation of Platteville Group (IL)
Deicke K-bentonite Bed of Black River Group (subsurface of OH*,PA*,WV*)
Deicke K-bentonite Bed of Salona Formation (PA*)
Deicke K-bentonite Bed of Oranda Formation (VA*,WV*)
Deicke K-bentonite Bed of Nealmont Formation (WV*)
Deicke K-bentonite Bed of Tyrone Limestone of High Bridge Group (KY*)
Deicke K-bentonite Bed of Eggleston Formation (VA*)
Deicke K-bentonite Bed of Moccasin Formation (VA*)
Deicke K-bentonite Bed of Bays Formation (TN*,VA*)
Deicke K-bentonite Bed of Bays Formation of Chickamauga Group (TN)
Deicke K-bentonite Bed of Carters Limestone of Stones River Group (AL*,GA*,TN*)
Deicke K-bentonite Bed of Stones River Formation (northern AL*)
Deicke K-bentonite Bed of Chickamauga Limestone (western facies, central AL*)
Deicke K-bentonite Bed of Colvin Mountain Sandstone of Chickamauga Group (northeastern AL*)
Deicke K-bentonite Bed of Colvin Mountain Sandstone (northeastern AL)

Also called Deicke Bentonite Bed*, informal Pencil Cave bentonite bed*, informal T-3 bentonite bed*.



Deicke K-bentonite Bed of Spechts Ferry Member of Decorah Formation of Sinnipee Group (WI)


Geologic age:

Late Ordovician (Mohawkian; late Turinian)*


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

Type section: Mincke section, in south bluff of Meramec River along St. Louis-San Francisco RR, 0.4 km northeast of Mincke Siding, in center E/2 SE/4 SE/4 sec. 21, T. 44 N., R. 4 E., St. Louis Co., MO. Named from town of Deicke, 3.2 km southwest of type section (Willman and Kolata, 1978).


AAPG geologic province:

Appalachian basin*
Black Warrior basin*
Cincinnati arch*
Illinois basin*
Ozark uplift*
Sioux uplift*
Wisconsin arch*


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 ([ ]).