Glacial Geology of the Vandalia, Illinois, Region (Classi...
Jacobs, Alan Martin Excerpt from Glacial Geology of the Vandalia, Illinois, RegionKansan till is exposed in only a few places along the banks of the Kaskas kia River (vandalia Bridge Section, following manuscript, and fig. 4) and along Ramsey Creek (fig. It is recognized in the field by a zone of leaching below calcareous Illinoian till. The Kansan till is dark gray, compact, and slightly sandy. It averages 33 percent sand (standard deviation, or s=3), 42 percent...