Curlew Limestone Member
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.
M. E. Hopkins and J. A. Simon
The Curlew Limestone Member of the Spoon Formation (Owen, 1856, No. 1 vertical section).
Named for Curlew, Union County, Kentucky.
The type locality is an exposure on Indian Hill, Curlew, Kentucky (Glenn, 1912, p. 24).
Extent and thickness
It is widespread, though sporadic, in southern Illinois and western Kentucky, and is seldom more than 4 feet thick.
The Curlew is a gray, fine-grained, locally cherty limestone.
Well log characteristics
It contains an abundant open-marine fauna.
Age and correlation
The Curlew is correlated with the Seville Limestone.
Environments of deposition
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.
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