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National Geologic Map Database

Geologic Unit: Whitewood

Usage:

Whitewood Limestone (MT*,SD*,WY*)
Whitewood Dolomite (MT*,SD*,WY*, and ND-subsurface)


Geologic age:

Ordovician, Late*
Richmondian*


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

Type section: in sec. 13, T. 5 N., R. 3 E., Lawrence Co., western SD (McCoy, 1958).
Named from typical exposures in Whitewood Canyon on Fremont, Elkhorn and Missouri Valley RR (Deadwood Branch), below Deadwood, [in T. 5 N., R. 3 E., Sturgis 15-min quadrangle, Lawrence Co.], western SD. Name credited to T.A. Jaggar, Jr. Crops out in northern Black Hills and vicinity, SD and WY (Darton, 1904; see also Jaggar, 1904).


AAPG geologic province:

Bighorn basin*
Williston basin*
Powder River basin*


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

Asterisk (*) indicates published by U.S. Geological Survey authors.

"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 ([ ]).