Surface Maps, Thickness Maps and a Three-dimensional Model of the Eau Claire in Lake County, Illinois

               

Eau Claire Formation

The Eau Claire consists of a silty, argillaceous dolomitic sandstone. It is an important aquitard that separates the underlying Mt. Simon from the Ironton-Galesville.

Left is a three-dimensional representation of the thickness of the Eau Claire Formation.

Updated 10/27/2009 SLD