Historical:Rendleman Oolite Bed

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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
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Lithostratigraphy: Hunton Limestone Megagroup >>Lingle Formation >>Rendleman Oolite Bed
Chronostratigraphy: Paleozoic Erathem >>Devonian System >>Middle Devonian Series
Allostratigraphy: Kaskaskia Sequence


Charles Collinson and Elwood Atherton

Name Origin

The Rendleman Oolite Bed (North, 1969, p. 30-31) is named for Rendleman School, 1 mile east of the type section.

Type Section

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.


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.


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