This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1913 edition. Excerpt: ...and operators of (c) Willis, Baily. "The Mechanics of Appalachian Structure." u. S. Geological Survey, 18th Annual Report, Pt. 2. the field naturally think of the synclines, or "basins," as the principal structures; the mines are laid out lengthwise along the basins with headings running back to the ...
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1913 edition. Excerpt: ...and operators of (c) Willis, Baily. "The Mechanics of Appalachian Structure." u. S. Geological Survey, 18th Annual Report, Pt. 2. the field naturally think of the synclines, or "basins," as the principal structures; the mines are laid out lengthwise along the basins with headings running back to the steep crests of anticlines on either side, and for this reason the anticlines are considered as the limiting factors in taking coal from the basins. Consequently those interested in mining coal from such a region have their attention attracted to the continuations of the basins as the essential structures, though the anticlines are, of course, parts of such folds, but the miners give names to the basins rather than to the anticlines as will be seen by reference to the cross-sections. Plate XXIII. Across the west side of the Broad-Top field the basins are remarkably persistent, some of them running the entire length of BroadTop Mountain, with astonishing regularity of width and direction. In the report on Bedford County in 1882, Prof. J. J. Stevenson correlates certain folds of Broad-Top Mountain with those l-uuiiing southward across the county. From west to east in the coalfield his identifications were as follows: --(1) The western division of the Clearfield synclinal; (2) the Grey's Run anticlinal; (3) the eastern division of the Clearfield synclinal; (4) the Sheaver's Creek anticlinal; (5) A series of folds; (6) the Broad-Top anticlinal; (7) the East Broad-Top basin. Regarding the classification of the series of folds, No. 5 in the preceding list, Prof. Stevenson states (Volume T 2 p. 43); "The folds between the Sheaver's Creek anticlinal and the Broad-Top anticlinal cannot be identified with those occurring farther south. Clearly some new...
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