Owing to peculiar phases in the erosion of the Mississippi River in northeast Missouri the basal portion of the Lower Carboniferous rocks is exposed to better advantage than perhaps anywhere else in the whole interior basin. In Pike County, Missouri, and in the contiguous parts of Illinois, not only does the lower part of the Carboniferous crop out along the streams, but vertical sections from the Hudson shales up to the Upper Burlington are obtainable in single exposures. In this locality the bluffs are high and the outcrops of the rocks under consideration are practically continuous along the great river for a distance of more than seventy-five miles.
Proceedings of the Iowa Academy of Sciences
©1896 Iowa Academy of Science, Inc.
Keyes, Charles R. and Rowley, R. R.
"Vertical Range of Fossils at Louisiana,"
Proceedings of the Iowa Academy of Science, 4(1), 26-40.
Available at: https://scholarworks.uni.edu/pias/vol4/iss1/7