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National Geologic Map Database

Geologic Unit: Bluejacket

Usage:

Bluejacket Sandstone Member of Boggy Formation of Krebs Group (OK*)
Bluejacket Sandstone Member of Krebs Formation of Cherokee Group (KS*)
[?] Bluejacket Formation of Krebs Group (OK)
[?] Bluejacket Sandstone Member of Boggy Shale (OK-south of Arkansas River)
[?] Bluejacket Sandstone Member of Cherokee Shale (KS-north of Arkansas River)
Bluejacket Sandstone of /Krebs subgroup [informal] of Cherokee Group (MO)

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


Geologic age:

Middle Pennsylvanian (Desmoinesian)*


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

Named from exposures near Bluejacket in northeastern Craig Co., OK, by D.W. Ohern in unpub. mss. (Gould, 1925).
Is a well defined lithologic and mappable unit, typically exposed along road from Bluejacket west to Pyramid Corners, on east slope of Timbered Hill, on OK Highway 25, in NE/4 NE/4 sec. 25, T. 27 N., R. 20 E., Craig Co., OK (Howe, 1951, p. 2090; see also MO Geol. Survey lexicon, Thompson, 2001).


AAPG geologic province:

Chautauqua platform*
Cherokee basin*
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 ([ ]).