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Geologic Unit: Greenbush
Map showing publication footprint
  • Usage in publication:
    • Greenbush coal member
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Coal
  • AAPG geologic province:
    • Illinois basin
Publication:

Kosanke, R.M., Simon, J.A., Wanless, H.R., and Willman, H.B., 1960, Classification of the Pennsylvanian strata of Illinois: Illinois Geological Survey Report of Investigations, no. 214, 84 p.


Summary:

Pg. 33, 46 (table 1), pl. 1. Greenbush coal member of Spoon formation (new) of Kewanee group (new). Assigned member status in Spoon formation. Occurs above Wiley coal member and below Isabel sandstone member. Coal named by Wanless (1931, Illinois Geol. Survey Bull., no. 60). Age is Pennsylvanian. Presentation of new rock-stratigraphic classification of Pennsylvanian strata in Illinois.
Type locality: in E/4 sec. 24, T. 8 N., R. 1 W., Warren Co., western IL.

Source: US geologic names lexicon (USGS Bull. 1200, p. 1596).


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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).

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