File:C605-Figure-08.jpg

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Figure 8 Map from Potter (1962)[1], showing the thickness (in feet) of sandstone between the Houchin Creek and Springfield Coals, with the Galatia channel (from Hopkins 1968[2]) superimposed.






  1. ↑ Potter, P.E., 1962, Shape and distribution patterns of Pennsylvanian sand bodies in Illinois: Illinois State Geological Survey, Circular 339, 36 p., 3 pls.
  2. ↑ Hopkins, M.E., 1968, Harrisburg (No. 5) Coal reserves of southeastern Illinois: Illinois State Geological Survey, Circular 431, 25 p., 2 pl.

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