ISGS - Maps and a 3-D Model of the Eau Claire
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