Kenwood Member

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Lithostratigraphy: Hunton Limestone Megagroup >>Wapsipinicon Limestone >>Kenwood Member
Chronostratigraphy: Paleozoic Erathem >>Devonian System >>Middle Devonian Series
Allostratigraphy: Kaskaskia Sequence

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)

Charles Collinson and Elwood Atherton


Original description

The Kenwood Member of the Wapsipinicon Limestone (Norton, 1894, p. 23; Stainbrook, 1935, p. 251).


Named for Kenwood Park in the northern part of Cedar Rapids, Linn County, Iowa.

Other names


Type section

Type location

The type section of the Kenwood Member of the Wapsipinicon Limestone is located in an exposure along Indian Creek near for Kenwood Park in the northern part of Cedar Rapids, Linn County, Iowa.

Type author(s)

Type status

Reference section

Reference location

Reference author(s)

Reference status

Stratigraphic relationships

The Kenwood Member of the Wapsipinicon Limestone overlies the Otis Member. As originally defined, the Kenwood included strata later differentiated as the Spring Grove Member (Stainbrook, 1935).

Extent and thickness

The Kenwood is 15-20 feet thick in the outcrop area. It is 10 feet thick where exposed at the base of a quarry half a mile southeast of Milan, Rock Island County (NW 25, 17N-2W), and 16 feet in the quarry on the south side of Rock Island, Rock Island County (SE 14, 17N-2W), but the base is not exposed in either quarry.


The Kenwood consists of laminated or thin-bedded, argillaceous, dolomitic limestone with strongly brecciated beds and pockets of clay.




Well log characteristics


Age and correlation

Environments of deposition

Economic importance



NORTON, W. H., 1894, Notes on the lower strata of the Devonian Series in eastern Iowa: Iowa Academy of Science Proceedings 1, part 4, p. 22-24.
STAINBROOK, M. A., 1935, Stratigraphy of the Devonian System of the Upper Mississippi Valley: Kansas Geological Society Guidebook, 9th Annual Field Conference, p. 248-260.

ISGS Codes

Stratigraphic Code Geo Unit Designation