GeoNotes Series

Short, informative documents on various geologic topics

Available as Web pages and as Portable Document Format (PDF) files

GeoNote 1: Mississippian Rocks in Illinois (PDF 2.2 mb)
GeoNote 2: Pennsylvanian Rocks in Illinois (PDF < 1 mb)
GeoNote 3: Quaternary Glaciations in Illinois (PDF < 1 mb)
GeoNote 4: Build Illinois — The Last 400 Years (PDF < 1 mb)