Historical:Starrs Cave Limestone

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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: Mammoth Cave Limestone Megagroup >>North Hill Group >>Starrs Cave Limestone
Chronostratigraphy: Paleozoic Erathem >>Mississippian Subsystem >>Kinderhookian Series
Allostratigraphy: Kaskaskia Sequence

Authors

Elwood Atherton, Charles Collinson, and Jerry A. Lineback

Name Origin

The Starrs Cave Limestone (Collinson, in Workman and Gillette, 1956, p. 31) is named for Starrs Cave on the Flint River near Burlington, Iowa.

Type Section

The type section of the Starrs Cave Limestone, Starrs Cave on the Flint River near Burlington, Iowa, consists of 2.7-3.5 feet of oolitic, very light gray limestone containing many brachiopods and corals (NW NW 19, 70N-2W). Laudon (1931) referred to this unit as the Schellwienella Zone.

Correlation

The Starrs Cave is correlated with the Chouteau Limestone (Collinson, 1961).

Extent and Thickness

In Illinois the Starrs Cave occurs only in western Hancock County (fig. M-9), where it is 2-12 feet thick but is not exposed.

Stratigraphic Position

The Starrs Cave Limestone is the uppermost formation in the North Hill Group. It conformably overlies the Prospect Hill Siltstone and is unconformably overlain by the Burlington Limestone.

Description

The Starrs Cave is a buff to light brownish gray, coarsely oolitic, locally dolomitic limestone.

Fossils

The Starrs Cave has an abundant macrofauna dominated by brachiopds.

References

COLLINSON, CHARLES, 1961, Kinderhookian Series in the Mississippi Valley, in Northeastern Missouri and west-central Illinois: Kansas Geological Society Guidebook, 26th Annual Field Conference, Missouri Geological Survey Report of Investigations 27, p. 100-109; Illinois State Geological Survey Reprint 1961-U.
LAUDON, L. R., 1931, Stratigraphy of the Kinderhook Series of Iowa: Iowa Geological Survey, v. 35, p. 333-451.
WORKMAN, L. E., and TRACEY GILLETTE, 1956, Subsurface stratigraphy of the Kinderhook Series in Illinois: Illinois State Geological Survey Report of Investigations 189, 46 p.

ISGS Codes

Stratigraphic Code Geo Unit Designation
5450
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