Transactions of the Royal Society of Edinburgh Volume 28

Transactions of the Royal Society of Edinburgh Volume 28

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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. 1879 edition. Excerpt: ... repetition of the strata with a gradually ascending section towards the east. But in this case the hue of coast cuts sharply across the strike of the beds, with the result of bringing us to much higher portions of the flagstones than can be seen to the west of Dunnet Head. Between Dunnet Bay and Brough the great promontory of Dunnet Head projects into the Pentland Firth, with its long lines of precipice barred by the gently inclined stratification of their yellow and red sandstones. These strata, so different from everything around them, have no doubt been correctly assigned by Murchison to the Upper Old Red Sandstone. They will be again referred to in a subsequent part of this memoir. On the west side of the promontory no junction can be seen between these flat or very slightly sloping strata and the more highly inclined flagstones of Dunnet Bay. On the east side, however, the contact of the two series of rocks can be examined to great advantage in the Bay of Brough. Through the centre of that bay there runs a fault, by which the yellow sandstones on the west are thrown on end and contorted against the flagstones on the east side. (See fig. 6.) Sir Roderick Murchison believed that the Caithness flags pass up conformably into these yellow sandstones, and referred to the shore at Brough as one of the places where this passage could be made out. Apart, however, from the striking dislocation between the two formations, by which of course any chance of tracing a gradation between them must be The existence and effect of this fault were noted by Sjbdgwiok and Murchison, //. cit. p. 133. In his later memoir, on the " Succession of the Older Rocks in the Northern Highlands," Murchison, as stated above, referred to the locality as one...
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Product details

  • Paperback | 310 pages
  • 189 x 246 x 17mm | 558g
  • English
  • Illustrations, black and white
  • 1236908422
  • 9781236908421