Curlew Limestone Member

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Lithostratigraphy: Kewanee Group >>Spoon Formation >>Curlew Limestone Member
Chronostratigraphy: Paleozoic Erathem >>Pennsylvanian Subsystem >>Desmoinesian Series
Allostratigraphy: Absaroka 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)

M. E. Hopkins and J. A. Simon

Name

Original description

The Curlew Limestone Member of the Spoon Formation (Owen, 1856, No. 1 vertical section).

Derivation

Named for Curlew, Union County, Kentucky.

Other names

History/background

Type section

Type location

The type locality is an exposure on Indian Hill, Curlew, Kentucky (Glenn, 1912, p. 24).

Type author(s)

Type status

Reference section

Reference location

Reference author(s)

Reference status

Stratigraphic relationships

Extent and thickness

It is widespread, though sporadic, in southern Illinois and western Kentucky, and is seldom more than 4 feet thick.

Lithology

The Curlew is a gray, fine-grained, locally cherty limestone.

Core(s)

Photograph(s)

Contacts

Well log characteristics

Fossils

It contains an abundant open-marine fauna.

Age and correlation

The Curlew is correlated with the Seville Limestone.

Environments of deposition

Economic importance

Remarks

References

GLENN, L. C., 1912, A geological reconnaissance of the Tradewater River region, with special reference to the coal beds: Kentucky Geological Survey Bulletin 17, 75 p.
OWEN, D. D., 1856, Report of the geological survey in Kentucky made during the years 1854 and 1855: Kentucky Geological Survey Bulletin, v. I, Series 1, 416 p.

ISGS Codes

Stratigraphic Code Geo Unit Designation
3480
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