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AAPG Bulletin
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AAPG Bulletin; Year: 2021; Issue: August DOI: 10.1306/02262118214
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Figure 2.
Generalized stratigraphic column of the Illinois Basin in southern Illinois. The column shows a section of the Chesterian Series containing the Cypress Sandstone (Ss) and demonstrates the incision of the Ss into underlying strata. Figure modified from Whitaker and Finley (1992). ©1992 University of Illinois Board of Trustees. Used with permission from the Illinois State Geological Survey. Ls. = Limestone; Sh. = Shale.
Figure 2. Generalized stratigraphic column of the Illinois Basin in southern Illinois. The column shows a section of the Chesterian Series containing the Cypress Sandstone (Ss) and demonstrates the incision of the Ss into underlying strata. Figure modified from Whitaker and Finley (1992). ©1992 University of Illinois Board of Trustees. Used with permission from the Illinois State Geological Survey. Ls. = Limestone; Sh. = Shale.