Structure and areal extent of the Colchester (No. 2) Coal in Adams, Brown, Schuyler, and McDonough Counties, Illinois
Thesis (M.S.)--Florida State University
Pennsylvanian and younger sediments rest on the irregular erosional surface of Mississippian limestone and shale. Ordovician through Pennsylvanian sediments are exposed in the area of study and in much of the area the bedrock is covered by glacial drift and loess. The structure of the Colchester (No. 2) Coal of the Liverpool cyclothem, which is the most extensive Pennsylvanian unit, is mapped.
Two small mines produce clay and shale. Eight small mines are working the No. 2 coal in the area; the thickness of the overburden relative to that of the coal prevents large scale industrial coal mining under present economic conditions.
Colchester (No. 2) Coal
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