File:Penn caseyville 2-3.jpg: Revision history

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  • curprev 16:0516:05, 23 July 2018Jennifer.Obrad talk contribs 280 bytes +280 Figure 2-3. Graphic log based on continuous core from Illinois State Geological Survey #1 Berry test hole in Sec. 8, T9S, R3W, Jackson County, Illinois. This is a reference section for the Caseyville Formation. QA = quartz arenite