Remnants of Nebraskan drift, as recently exposed capping a high Mississippi River bluff in the city of Dubuque and occupying caverns and sinks in the Mississippi River bluff near Guttenberg, are described and interpreted.
Proceedings of the Iowa Academy of Science
©1936 Iowa Academy of Science, Inc.
Trowbridge, A. C.
"New Exposures of Upland Nebraskan Drift in Northeastern Iowa,"
Proceedings of the Iowa Academy of Science, 43(1), 245-245.
Available at: https://scholarworks.uni.edu/pias/vol43/iss1/59