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• Joachim Dolomite
  ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p. ...its below the Boles, and the overlying beds are included in the Rock Levee Formation.
  5 KB (690 words) - 18:18, 12 January 2017
• New Albany Shale Group
  ...ndbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p. ...oup is largely black shale that overlies the Sellersburg Limestone (Lingle Formation in Illinois) and is overlain by the Rockford Limestone (Chouteau Limestone
  5 KB (722 words) - 17:07, 22 October 2019
• Purington Shale Member
  |category5=Carbondale Formation |tree1=Carbondale Formation
  17 KB (2,452 words) - 16:28, 9 February 2022

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