This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help.
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
Public domainPublic domainfalsefalse
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.
Bahasa Indonesia ∙ català ∙ čeština ∙ Deutsch ∙ eesti ∙ English ∙ español ∙ français ∙ galego ∙ italiano ∙ Nederlands ∙ português ∙ polski ∙ sicilianu ∙ suomi ∙ Tiếng Việt ∙ Türkçe ∙ български ∙ македонски ∙ русский ∙ മലയാളം ∙ 한국어 ∙ 日本語 ∙ 中文 ∙ 中文(简体) ∙ 中文(繁體) ∙ العربية ∙ فارسی ∙ +/−
Captions
Illinois Basin Pennsylvanian stratigraphy
Items portrayed in this file
depicts
File history
Click on a date/time to view the file as it appeared at that time.
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
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):