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  • File:C605-Plate 5 - Effingham Channel Stewardson Xsec.jpg
    {{Galatia Channel Image |File name=Plate 5 - Effingham Channel Stewardson Xsec.jpg
    (4,200 × 965 (1.42 MB)) - 20:13, 10 July 2020
  • File:C605-Plate 5 - Effingham Channel Stewardson Xsec map.jpg
    {{Galatia Channel Image |File name=Plate 5 - Effingham Channel Stewardson Xsec map.jpg
    (2,200 × 1,821 (770 KB)) - 20:12, 10 July 2020
  • File:C605-Plate 4 - Effingham Channel Olney Xsec.jpg
    {{Galatia Channel Image |File name=Plate 4 - Effingham Channel Olney Xsec.jpg
    (3,650 × 1,116 (1.33 MB)) - 21:00, 10 July 2020
  • File:C605-Plate 4 - Effingham Channel Olney Xsec map.jpg
    {{Galatia Channel Image |File name=Plate 4 - Effingham Channel Olney Xsec map.jpg
    (2,200 × 1,734 (564 KB)) - 20:13, 10 July 2020
  • File:C605-Figure-31.jpg
    {{Galatia Channel Image ...asper County, Illinois, indicating coal in the upper part of the Effingham channel fill.
    (1,933 × 2,098 (1.45 MB)) - 16:01, 17 August 2023
  • File:C605-Figure-33.jpg
    {{Galatia Channel Image |caption=Interpretive cross section of the Effingham channel in Richland County, Illinois, showing two stages of infilling, with local c
    (2,102 × 494 (198 KB)) - 15:54, 11 July 2020
  • File:C605-Figure-61.jpg
    {{Galatia Channel Image |caption=Diagram illustrating the possible relationship of the Effingham and Galatia channels to Midcontinent cyclothems.
    (2,117 × 641 (237 KB)) - 18:00, 11 July 2020
  • File:C605-Figure-32.jpg
    {{Galatia Channel Image ...g of core from Richland County, Illinois, showing filling of the Effingham channel. The core shows two upward-fining sequences, the lower having tidal rhythmi
    (1,143 × 2,536 (411 KB)) - 16:01, 17 August 2023
  • File:C605-Figure-30.jpg
    {{Galatia Channel Image ...Geological Survey, Circular 339, 36 p., 3 pls.</ref> showing the Effingham channel as described in this report.
    (2,116 × 2,474 (1.64 MB)) - 14:18, 22 August 2023