Historical:West Baden Group

Jump to navigation Jump to search
Handbook of Illinois Stratigraphy
Series Bulletin 95
Author H. B. Willman, Elwood Atherton, T. C. Buschbach, Charles Collinson, John C. Frye, M. E. Hopkins, Jerry A. Lineback, Jack A. Simon
Date 1975
Link Web page
PDF PDF file
Store ISGS Store

Lithostratigraphy: Pope Megagroup >>West Baden Group
Chronostratigraphy: Paleozoic Erathem >>Mississippian Subsystem >>Chesterian Series >>Gasperian Stage
Allostratigraphy: Kaskaskia Sequence


Elwood Atherton, Charles Collinson, and Jerry A. Lineback

Name Origin

The West Baden Group (Cumings, 1922, p. 514; Gray et al., 1960, p. 44) is named for West Baden, Orange County, Indiana.

Extent and Thickness

The West Baden Group occurs in southeastern Illinois and is most useful in an area where the Ridenhower is dominantly sandstone and separation of the formations is difficult-- in places impractical (Swann, 1963).


The West Baden Group consists of the Bethel, Ridenhower, and Cypress Formations.


CUMINGS, E. R., 1922, Nomenclature and description of the geological formations of Indiana, in Handbook of Indiana geology: Indiana Department of Conservation Publication 21, p. 403-570.
GRAY, H. H., R. D. JENKINS, and R. M. WEIDMAN, 1960, Geology of the Huron area, south-central Indiana: Indiana Geological Survey Bulletin 20, 78 p.
SWANN, D. H., 1963, Classification of Genevievian and Chesterian (Late Mississippian) rocks of Illinois: Illinois State Geological Survey Report of Investigations 216, 91 p.

ISGS Codes

Stratigraphic Code Geo Unit Designation