Short Papers on Geologic Subjects: Major Aquifers in Glac...
Foster, John W.![Short Papers on Geologic Subjects: Major Aquifers in Glacial Drift Near Mattoon, Illinois, Notes on the Illinois Lafayette Gravel, Cambrian and Lower](https://support.digitalhusky.com/media/annotations/sorted/275/27539023/CHSBZCOP0327539023.jpg)
Excerpt from Short Papers on Geologic Subjects: Major Aquifers in Glacial Drift Near Mattoon, Illinois, Notes on the Illinois "Lafayette" Gravel, Cambrian and Lower Ordovician Exposures in Northern Illinois, An Occurrence of Barite in the Lasalle Limestone of IllinoisSubsurface Pleistocene studies near Mattoon recently conducted by the Illinois State Geological Survey have revealed the probable origin and nature of occurrence of two gravel aqu...