File:Penn carbondale 4-59.jpg
Figure 4-59. Graphic logs of two Pyro Mining Company boreholes in Saline County, Illinois, the reference sections for the Dykersburg Shale. © University of Illinois Board of Trustees.
Click on a date/time to view the file as it appeared at that time.
|current||21:06, 23 December 2020||1,790 × 3,121 (724 KB)||IlLex|
- You cannot overwrite this file.