File:C605-Figure-02.jpg

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Figure 2 Correlation chart showing the positions of key units within the Pennsylvanian Subsystem. Global and provincial stage boundaries and ages in millions of years (Ma) are after Gradstein et al. (2012)[1].






  1. Gradstein, F.M., J.G. Ogg, M.D. Schmitz, and G.M. Ogg, 2012, The geologic time scale 2012, 1st ed.: Amsterdam, Elsevier, 1,144 p.

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21:20, 17 July 2020
Thumbnail for version as of 21:20, 17 July 20201,819 × 2,181 (429 KB)Alan.Myers (talk | contribs)
18:13, 29 June 2020Thumbnail for version as of 18:13, 29 June 20201,500 × 1,799 (1.08 MB)Alan.Myers (talk | contribs)

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