Galatia Channel:Similar Channels Affecting Other Coal Seams

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	Abstract
	Introduction Geologic Setting Previous Research Crevasse-Splay Model Cyclicity and Sequence Stratigraphy
	Stratigraphy Houchin Creek Coal Excello Shale Member Hanover Limestone Member Delafield Member (New) Galatia Member (New) Underclay of Springfield Coal Springfield Coal Dykersburg (Shale) Member Turner Mine Shale Member St. David Limestone Member Summary
	Other Channels Related to the Galatia Channel Sullivan Channel Effingham Channel Leslie Cemetery Channel Other Channels
	Similar Channels Affecting Other Coal Seams Colchester Coal and Francis Creek Shale Herrin Coal, Energy Shale, and Walshville Channel Baker Coal and Winslow-Henderson Channel Danville Coal Murphysboro Coal and Oraville Channel
	Discussion Model of Channel Development Linkage of Climate and Eustasy Peat Developed at Lowstand Rapid Transgression, Gradual Regression Relationship of Effingham and Galatia Channels
	Channels and Cyclothems: A Summary Model The “Typical” Cyclothem on a Cratonic Platform Cyclothem Models Do not Address Contemporaneous Channels The Gray Shale Wedge and Its Relationship to the Channel
	Conclusions
	Acknowledgments
	References
	Appendix
	Figures
	Plates

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Similar Channels Affecting Other Coal Seams

Several well-documented paleochannels in the Illinois Basin existed contemporaneously with peat deposits older and younger than the Springfield (Figure 39). The Galatia channel provides an apt model for comparison.

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  Figure 39 Map of the Illinois Basin showing channels and gray shale wedges affecting the Murphysboro, Colchester, Herrin, Baker, and Danville Coals.
  

Colchester Coal and Francis Creek Shale

Herrin Coal, Energy Shale, and Walshville Channel

Baker Coal and Winslow-Henderson Channel

Danville Coal

Murphysboro Coal and Oraville Channel

Primary Source

Nelson, W.J., S.D. Elrick, W.A. DiMichele, and P.R. Ames, 2020, Evolution of a peat-contemporaneous channel: The Galatia channel, Middle Pennsylvanian, of the Illinois Basin: Illinois State Geological Survey, Circular 605, 85 p., 6 pls.