Report of the Geological Survey of Indiana, Made During the Year ...
Report of the Geological Survey of Indiana, Made During the Year ...
Indiana. Geological Survey, Indiana. State Geologist
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Compact banded sandstone, < Drab shale, with iron nodules, Cream colored soapstone, .
Coal, M, BORE.
Fire clay, .
Hard stone at bottom, • The seam M, in this shaft, was, as usual, a good, fat, blacksmith coal, but the thickness did not justify the ex- pense of work; and, after a considerable amount of drifting to definitely settle the thickness, the shaft was abandoned.
An interesting feature in this mine was the discovery of a vertical dyke or wall of intrusive clay, one foot wide, run- ning a little east of north. This is the only fault, though here only a separation, that I have met with in the coals of Indiana; and can not well be explained without attributing the phenomenon to a crevice produced by earthquake action.
A series of limestone veins, ten miles west of Vincennes, at the wagon bridge crossing the Embarras river in Illinois, is the only seeming parallel to this case.
On Parker creek, one mile northeast from the Narrows, the heavy quarry sandstone which so persistently accompa- nies coal M, is of easy access and good quality.
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