File:Penn carbondale 4-69.jpg
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Figure 4-69. Graphic log based on core from Peabody Energy borehole no. 15-H7, sec. 15, T 6 N, R 8 W, Sullivan County, Indiana, the reference section for the Bucktown Coal Member of previous authors. After Willman and Payne (1942). Copyright © 1942 Illinois State Geological Survey.
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current | ★ Approved revision 21:39, 27 January 2021 | 2,116 × 2,552 (731 KB) | Jennifer.Obrad (talk | contribs) |
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