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• '''Figure 1''' Map of the Illinois Basin … '''Figure 1''' Map of the Illinois Basin showing the extent of Pennsylvanian rocks, thickness of the Springfield Coal, and channels interrupting the coal. From Finley et al. (2005)'"`UNIQ--ref-00000002-QINU`"'. Straight lines separating polygons are artifacts of mapping protocol in original.artifacts of mapping protocol in original.  +
• '''Figure 10''' Map showing the thickness and mined areas of the Springfield Coal throughout Illinois. After Treworgy et al. (1999)'"`UNIQ--ref-00000007-QINU`"'. Straight lines separating polygons are artifacts of mapping protocol in original.  +
• '''Figure 14''' Map showing the thickness of the Dykersburg Member in the vicinity of Galatia channel in southeastern Illinois. From Treworgy et al. (1999)'"`UNIQ--ref-00000008-QINU`"'.  +
• '''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)'"`UNIQ--ref-00000003-QINU`"'.  +
• '''Figure 26''' Drawings from Meier and Harper (1981)'"`UNIQ--ref-00000009-QINU`"' illustrating a major disruption of the Springfield Coal in AMAX Coal’s Wabash Mine in Wabash County, Illinois.  +
• '''Figure 30''' Map from Potter (1962)'"`UNIQ--ref-0000000A-QINU`"' showing the Effingham channel as described in this report.  +
• '''Figure 38''' Map and cross section of the Terre Haute channel. From Friedman (1960)'"`UNIQ--ref-0000000B-QINU`"'. Courtesy of the Indiana Geological and Water Survey. Lines of cross section are shown on the map.  +
• '''Figure 43''' Map showing the Walshvill … '''Figure 43''' Map showing the Walshville channel and sulfur content of the Herrin Coal. After Treworgy et al. (2000)'"`UNIQ--ref-0000000C-QINU`"'. The four named areas of low-sulfur coal are all associated with thick Energy Shale adjacent to the channel.hick Energy Shale adjacent to the channel.  +
• '''Figure 51''' Stage 3: The Galatia channel developed a meander belt.  +
• '''Figure 52''' Stage 4: The change to a humid climate caused the Springfield peat to begin to form.  +
• '''Figure 53''' Stage 5: Springfield peat accumulates across a large area of the basin.  +
• '''Figure 54''' Stage 6: A warming climate brought rapid melting of the glaciers and a sea-level rise. The Galatia channel became an estuary, subject to strong tidal currents.  +
• '''Figure 55''' Stage 7: Peat swamps drowned as the estuary became an embayment. Dykersburg sediments rapidly buried the peat.  +
• '''Figure 56''' Stage 8: As the transgression continued apace, the entire basin area was submerged in deep water, which became stratified and anoxic, and black mud (Turner Mine Shale) was deposited.  +
• '''Figure 57''' Stage 9: Normal marine circulation resumed near the apex of an interglacial stage (marine highstand), bringing a brief interlude of carbonate sedimentation (St. David Limestone).  +
• '''Figure 58''' Stage 10: Marine regression begins the next cycle.  +
• '''Figure 59''' Conceptual model of Pange … '''Figure 59''' Conceptual model of Pangea during a glacial episode of the Pennsylvanian. From Cecil,</br>C.B., F.T. Dulong, R.R. West, R. Stamm, B. Wardlaw, and N.T. Edgar, 2003b, Climate controls on the stratigraphy of a Middle Pennsylvanian cyclothem in North America, in C.B. Cecil and N.T. Edgar, eds., Climate controls on stratigraphy: SEPM Special Publication 77, p. 151–180. Copyright © 2003, used with permission of SEPM; permission conveyed through Copyright Clearance Center, Inc. ITCZ, intertropical</br>convergence zone.Inc. ITCZ, intertropical convergence zone.  +
• '''Figure 60''' Conceptual model of Pange … '''Figure 60''' Conceptual model of Pangea during an interglacial episode of the Pennsylvanian. From Cecil, C.B., F.T. Dulong, R.R. West, R. Stamm, B. Wardlaw, and N.T. Edgar, 2003b, Climate controls on the stratigraphy of a Middle Pennsylvanian cyclothem in North America, in C.B. Cecil and N.T. Edgar, eds., Climate controls on stratigraphy: SEPM Special Publication 77, p. 151–180. Copyright © 2003, used with permission of SEPM; permission conveyed through Copyright Clearance Center, Inc. ITCZ, intertropical convergence zone.Inc. ITCZ, intertropical convergence zone.  +
• '''Figure 61''' Diagram illustrating the possible relationship of the Effingham and Galatia channels to Midcontinent cyclothems.  +
• '''Figure 7''' Isopach map of the Delafield Member. After Wanless et al. (1970)'"`UNIQ--ref-00000004-QINU`"'. Thicknesses are in feet.  +