Canadian mining journal January-June 1905 . r pass-ing Anthracite, but remain fairly constant for about five milesfrom the crossing of the Cascade, with a general dip to thewest of 45 deg. or 50 deg., but here the beginning of a shallowsyncline is found, and before the end of the Cascade Moun-tain ridge is reached the coal-bearing beds run into the faultline. As the valley of the Cascade River narrows up, less ofthe Cretaceous rocks remain, and at the northern end onlythe dark shales below the coal-bearing measures are left. Asthe whole of this area is taken up by the , it is in-tended t
Canadian mining journal January-June 1905 . r pass-ing Anthracite, but remain fairly constant for about five milesfrom the crossing of the Cascade, with a general dip to thewest of 45 deg. or 50 deg., but here the beginning of a shallowsyncline is found, and before the end of the Cascade Moun-tain ridge is reached the coal-bearing beds run into the faultline. As the valley of the Cascade River narrows up, less ofthe Cretaceous rocks remain, and at the northern end onlythe dark shales below the coal-bearing measures are left. Asthe whole of this area is taken up by the , it is in-tended to work it all from the south end, following the seamson an entry but little above the Cascade River. The southern end of this field consists of a monoclinalblock of Cretaceous dipping to the west, partly over-riddenby the limestone of Cascade Mountain. This overthrust hasmade some impression on the rocks composing the two lower seams on which work is progressing now arewell protected by heavy beds of sandstone, and the shearing /. and pressure of the overthrust has caused little damage tothe coal. The one above has suffered much more, owingno doubt to weaker covering beds, and there is evidencethat there has also been sliding and bending of the overlyingrocks. The sHding plane seems to have been mostly alongthe plane of seam No. 3. THE CANADIAN MINING REVIEW. 109
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