Rendleman Oolite Bed

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Lithostratigraphy: Hunton Limestone Megagroup >>Lingle Formation >>Rendleman Oolite Bed
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 Rendleman Oolite Bed (North, 1969, p. 30-31).


Named for Rendleman School, 1 mile east of the type section.

Other names


Type section

Type location

The type section of the Rendleman Oolite Bed is part of the Walnut Grove type section, an outcrop near the head of a small tributary of Clear Creek (SE SE SW 22, 11 S-2W), where it is 1.5 feet thick and occurs 4 feet above the base of the Walnut Grove Member.

Type author(s)

Type status

Reference section

Reference location

Reference author(s)

Reference status

Stratigraphic relationships

Extent and thickness


The Rendleman Oolite Bed is a persistent, distinctive bed. The ooliths, which are poorly sorted and have a maximum diameter of 1 mm, occur in a fine-grained limestone matrix.




Well log characteristics


Age and correlation

Environments of deposition

Economic importance



NORTH, W. G., 1969, Middle Devonian strata of southern Illinois: Illinois State Geological Survey Circular 441, 45 p.

ISGS Codes

Stratigraphic Code Geo Unit Designation