Popcorn Sandstone Member

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Lithostratigraphy: Pope Megagroup >>Cedar Bluff Limestone Group >>Renault Limestone >>Popcorn Sandstone Member
Chronostratigraphy: Paleozoic Erathem >>Mississippian Subsystem >>Valmeyeran 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)

Elwood Atherton, Charles Collinson, and Jerry A. Lineback

Name

Original description

The Popcorn Sandstone Bed in the base of the Shetlerville Member of the Renault Limestone (Swann, 1963, p. 32).

Derivation

Named for Popcorn Spring, 700 feet north of Popcorn Church in Lawrence County, Indiana (SE SE SW 5, 6N-2W), where it forms the base of the Paoli Formation.

Other names

History/background

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Stratigraphic relationships

Extent and thickness

It occurs in Hardin County, but it is not widely recognized in Illinois.

Lithology

The Popcorn is a bed of sandstone, shale, or impure limestone a few inches or a few feet thick.

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Remarks

References

SWANN, D. H., 1963, Classification of Genevievian and Chesterian (Late Mississippian) rocks of Illinois: Illinois State Geological Survey Report of Investigations 216, 91 p.

ISGS Codes

Stratigraphic Code Geo Unit Designation
4520
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