Lake County | Quaternary | Maquoketa Formation | Silurian | Galena-Platteville Interval | Ancell Formation
Ironton-Galesville | Eau Claire Formation | Mt. Simon Sandstone | Cross Sections

Stratigraphic Column Showing Materials in Lake County, Illinois

Stratigraphic column showing the geologic materials of Lake County, Illinois

Updated 10/27/2009 SLD

ILLINOIS STATE GEOLOGICAL SURVEY
E. Donald McKay, III, Interim Director

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