Report Volume 14, PT. 3

Report Volume 14, PT. 3

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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. 1905 edition. Excerpt: ...points, probably while the harder sandstone underwent folding. Between Larchwood and Chelmsford the railway runs mainly on a clay plain and seldom cuts the sandstone, the route having been chosen so as to avoid the anticlines, but both to north and south ridges a mile or two long and from 50 to 150 feet high rise above the plain with slopes ranging from 20-to 45. The wagon road between the two places, running south of the railway, crosses several of these ridges but lies to the south of the Chelmsford ridge, one of the most extensive ones which has been rather carefully studied, and may be taken as typical. It begins just west of Chelmsford with the appearance of a dome, small buttresses of sandstone rising a few feet above the clay with slopes of 15-to 18 toward the north, northeast, east and southeast. A little beyond Chelmsford creek and south of the railway the dome rises completely above the clay and has been quarried for building stone. The cleared surface shows shell after shell of gently rounding beds sloping toward the plain, but to the southeast a gap has been cut out of the anticline so that a small bay penetrates the outer edge from the plain. The end of the anticline is slightly double, a very gentle depression separating a higher part to the northwest from a lower swell to the southeast. Beyond this point the anticline rises with a broken top to the height of from 75 to 125 feet or a little more, and keeps this height and a width of about 600 yards for about a mile, when it sinks somewhat irregularly with a dome-like form into the plain, The direction of the anticlinal axis is 659, the length is 2 miles and the width, if the outer remnants of strata which have been destroyed are counted in also, of about one, -half mile. If..
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Product details

  • Paperback | 100 pages
  • 189 x 246 x 5mm | 195g
  • United States
  • English
  • black & white illustrations
  • 1236774523
  • 9781236774521