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  • '''Figure 27''' (Top) Image of the major '''Figure 27''' (Top) Image of the major disturbance in the Wabash Mine. From Meier and Harper (1981). (Bottom) The same drawing with interpretation added, depicting the peat deposit torn asunder, with the upper part floated away from the lower. The seam height at the left side of the diagram is approximately 9 ft (2.7 m).the diagram is approximately 9 ft (2.7 m).  +
  • '''Figure 28''' Photograph of interlaminated carbonaceous shale and bright to dull coal close to the margin of the Sullivan channel in the Oaktown Mine in Knox County, Indiana.  +
  • '''Figure 29''' Photograph of interlaminated carbonaceous shale and bright to dull coal close to the margin of the Sullivan channel in the Oaktown Mine in Knox County, Indiana.  +
  • '''Figure 31''' Gamma-ray–neutron log from the Berry Petroleum No. 11-14 Pitcher well in Jasper County, Illinois, indicating coal in the upper part of the Effingham channel fill.  +
  • '''Figure 32''' Graphic log of core from '''Figure 32''' Graphic log of core from Richland County, Illinois, showing filling of the Effingham channel. The core shows two upward-fining sequences, the lower having tidal rhythmites in the upper part. The borehole is ISGS No. 1 Elysium (Hazel Farm) in sec. 27, T4N, R9E (county no. 25922).) in sec. 27, T4N, R9E (county no. 25922).  +
  • '''Figure 33''' Interpretive cross section of the Effingham channel in Richland County, Illinois, showing two stages of infilling, with local coal at the top of the lower stage.  +
  • '''Figure 34''' Maps of the Leslie Cemete'''Figure 34''' Maps of the Leslie Cemetery channel. (a) Regional map showing the relationship to other channels. (b) Map of the northern part of the Leslie Cemetery channel, with the thickness of the Folsomville Member. From Eggert (1984), The Leslie Cemetery and Francisco distributary fluvial channels in the Petersburg Formation (Pennsylvanian) of Gibson County, Indiana, U.S.A., in R.A. Rahmani and R.M. Flores, eds., Sedimentology of coal and coal-bearing sequences: International Association of Sedimentologists, Special Publication 7 p. 311, 313. Copyright © 1984 The International Association of Sedimentologists.rnational Association of Sedimentologists.  +
  • '''Figure 35''' Map of the Leslie Cemetery channel prepared for this study, using information from boreholes and mines. Lines of section for Figure 36 and Plate 6 are shown.  +
  • '''Figure 36''' Generalized sketches illu'''Figure 36''' Generalized sketches illustrating opposite margins of the Leslie Cemetery channel, as exposed in surface mines in the eastern half of 9S, 4W, Warrick County, Indiana. The upper image is from Peabody’s Lynnville Mine in July 1983, representing the northern half of the channel. The lower image is from Peabody’s Eby Pit in June 1982, representing the southern half of the channel.esenting the southern half of the channel.  +
  • '''Figure 37''' Interpretive diagram show'''Figure 37''' Interpretive diagram showing sequential development of the Leslie Cemetery channel. (a) The Francisco channel is eroded and filled with sediment, largely sand. (b) Springfield peat accumulates in swale left by the abandoned channel. (c) Flowing water reoccupies the channel during the later stages of peat accumulation. Peat encroaches from the margins as the channel migrates laterally. (d) A marine incursion drowns the region and deposits black shale and limestone. Channel filling inverts the topography because of differential compaction.graphy because of differential compaction.  +
  • '''Figure 39''' Map of the Illinois Basin showing channels and gray shale wedges affecting the Murphysboro, Colchester, Herrin, Baker, and Danville Coals.  +
  • '''Figure 40''' Stratigraphic column showing the units mentioned in the section on channels affecting coal seams other than the Springfield.  +
  • '''Figure 41''' Isopach map of the Francis Creek Shale.  +
  • '''Figure 42''' Interpretive cross section of the Herrin Coal, Walshville channel, and Energy Shale.  +
  • '''Figure 44''' Map showing the Winslow–Henderson channel.  +
  • '''Figure 45''' Interpretive cross section of the Winslow-Henderson channel. BR, Brereton Limestone; HR, Herrin Coal; BH/BT, Briar Hill/Bucktown Coal; SD/AC, St. David/Alum Cave Limestone; TM, Turner Mine Shale.  +
  • '''Figure 46''' Disruption of the Danvill'''Figure 46''' Disruption of the Danville Coal, with the seam “split” by a thick wedge of mudstone. Note the ragged splaying of coal into mudstone, with a thin coal stringer crossing diagonally from the lower to upper “bench.” The site is the box cut at a portal of the Prosperity Mine in Gibson County, Indiana.Prosperity Mine in Gibson County, Indiana.  +
  • '''Figure 48''' Interpretive cross section of the Oraville channel.  +
  • '''Figure 49''' Stage 1: Deposition of the Delafield Member as a series of coalescing deltas during the onset of a glacial stage as the sea level began to fall. The product is a thick succession of clastic rocks that coarsen upward.  +
  • '''Figure 50''' Stage 2: Channel incision of delta sediments.  +