banner link to ISGS Home Page  


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


Galena-Platteville Interval

Map of Lake County showing the thickness of the Galena-Platteville interval. Map of Lake County showing the top of the Galena Limestone
Three-dimensional representation of the thickness of the Galena-Platteville Interval.

Galena-Platteville Interval

In this study, the Galena and Platteville are combined into a single map unit because they have similar physical characteristics. In Lake County, these rocks consist of relatively pure fine- to medium-grained dolomite with low permeability and porosity.

Left is a three-dimensional representation of the thickness of the Galena-Platteville Interval.



 

University of Illinois logo

ILLINOIS STATE GEOLOGICAL SURVEY
INSTITUTE OF NATURAL RESOURCE SUSTAINABILITY     |    UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN

Home   |   Search   |   Site Map   |   Contact Us

Updated 2/7/2007 SLD