File:Illinois Basin Pennsylvanian stratigraphy.jpg
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Summary
| Description |
English: Illinois Basin Pennsylvanian stratigraphy |
| Date | |
| Source | Geologic Overview, Chapter C of Resource Assessment of the Springfield, Herrin, Danville, and Baker Coals in the Illinois Basin, U.S. Geological Survey Professional Paper 1625–D, https://pubs.usgs.gov/pp/p1625d/Chapter_C.pdf |
| Author | J.R. Hatch and R.H. Affolter |
Licensing
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This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 16:18, 9 November 2020 | | 1,118 × 732 (133 KB) | Pi3.124 | Uploaded a work by J.R. Hatch and R.H. Affolter from Geologic Overview, Chapter C of Resource Assessment of the Springfield, Herrin, Danville, and Baker Coals in the Illinois Basin, U.S. Geological Survey Professional Paper 1625–D, https://pubs.usgs.gov/pp/p1625d/Chapter_C.pdf with UploadWizard |
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