U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

Geologic Unit: Kanwaka

Usage:

Kanwaka Shale of Shawnee Group (IA*,KS*,MO*,NE*)
Kanwaka Formation of Shawnee Group (MO*)
Kanwaka Shale of Vamoosa Group (OK*)


Subunits:

(alphabetical): Clay Creek Limestone Member (IA,KS*,MO,NE), Elgin Sandstone Lentil (OK*); Jackson Park Member (KS*,NE*) or Jackson Park Shale Member (MO), Stull Member (IA,KS*,NE) or Stull Shale Member (MO).


Geologic age:

Late Pennsylvanian (Virgilian)*


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

Type locality: exposures east of Stull, 9+/- mi due west of Lawrence, KS (Moore, 1936).
Named for fact it forms a large part of surface of Kanwaka Twp., Douglas Co., eastern KS (Beede, 1902; name credited to G.I. Adams).


AAPG geologic province:

Forest City basin*
Nemaha anticline*


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 ([ ]).