Kiser Creek Member

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Lithostratigraphy: Embayment Megagroup >>Baylis Formation >>Kiser Creek Member
Chronostratigraphy: Mesozoic Erathem >>Cretaceous System >>Gulfian Series

Primary source

Willman, H. B., Elwood Atherton, T. C. Buschbach, Charles Collinson, John C. Frye, M. E. Hopkins, Jerry A. Lineback, and Jack A. Simon, 1975, Handbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p.

Contributing author(s)

H. B. Willman and John C. Frye


Original description

The Kiser Creek Member, the upper member of the Baylis Formation (Frye et al., 1964, p. 4, 10).


Named for the East Branch of Kiser Creek, a tributary of which exposes the type section.

Other names


Type section

Type location

The type section for the Kiser Creek Member is the same as that of the Baylis Formation, an exposure and small pit along a branch of Kiser Creek (NW SW SE 31, 4S-4W).

Type author(s)

Type status

Reference section

Reference location

Reference author(s)

Reference status

Stratigraphic relationships

Extent and thickness


The member constitutes the greater part of the formation and is dominantly sand and clayey sand, as described for the formation. The sands and clays of the Kiser Creek Member differ from glacial sands in their uniformity, lack of carbonates, distinctive clay mineral assemblages, and the absence of the variety of heavy minerals that characterizes the glacial deposits.




Well log characteristics


Age and correlation

Environments of deposition

Economic importance



FRYE, J. C., H. B. WILLMAN, and H. D. GLASS, 1964, Cretaceous deposits and the Illinoian glacial boundary in western Illinois: Illinois State Geological Survey Circular 364, 28 p.

ISGS Codes

Stratigraphic Code Geo Unit Designation