Illinois State Geological Survey Building the Bedrock | ISGS
Into the Basin | Midwestern Geology
NAM - Illinois Basin
Illinois Basin - Wikipedia
Mining geology of the principal resource coals of the Illinois Basin - ScienceDirect
Illinois Basin - Wikipedia
Mt Vernon, Illinois - Old, rusting pumpjacks in the Illinois Basin oil producing area, which includes southern Illinois, western Kentucky, and western Stock Photo - Alamy
Illinois Basin–Decatur Project (Chapter 19) - Geophysics and Geosequestration
Map illustrating extent of the Illinois basin in Illinois, Indiana,... | Download Scientific Diagram
Kentucky Natural Gas Corporation - Illinois Basin
IEEFA report: Dim future for Illinois Basin coal | IEEFA
An overview of the Illinois Basin – Decatur Project - Finley - 2014 - Greenhouse Gases: Science and Technology - Wiley Online Library
Overview of Sequences: Chapter 2: Part I. Illinois Basin: Stratigraphy