File:Penn carbondale 4-65.jpg

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Figure 4-65. Section based on data from Willman and Payne (1942) in which the Vermilionville Sandstone, as they called it, directly underlies the Herrin Coal. This sandstone actually represents the Walshville Member. Location is on the south bank of the Vermilion River in sec. 31, T 33 N, R 2 E, LaSalle County, Illinois. © University of Illinois Board of Trustees.

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