Geological Excursions Round the Isle of Wight and Along the Adajacent Coast of Dorsetshire

Geological Excursions Round the Isle of Wight and Along the Adajacent Coast of Dorsetshire

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1854 edition. Excerpt: ...distance. If the tide is very low, a succession of ledges of this kind are visible along the shore, stretching out to the distance of half a mile or more from the land, and indicating the former extent of the southern coast of the Island, at a comparatively very modern period. These reefs and rocks consist of the harder masses of the Wealden sandstone, which have resisted the destructive effects of the waves, after the clays, sands, and softer materials have been swept away. Bnoox PoINr.--As we approach Brook Point, the variegated sands and grit which lie beneath the clays become more developed; and large waterworn blocks of sandstone appear here and there on the shore. The ledge at the base of the clifi, which formed so prominent a feature of this part of the coast when seen from a distance, consists of indurated sandstone inclosing trunks and branches of large trees completely petrified, many of which are strewn along the strand, and half buried in the sand and shingle. The projecting masses at the foot of the cliff are the broken edges of the strata, and the trunks of fossil trees; the upper and less coherent deposits having been washed away. The clifi' is between thirty and forty feet high, and is capped by the bed of loam and gravel previously noticed at Compton Chine. Beneath this alluvial covering are laminated clays and shales, and sand and friable sandstone, abounding in masses and layers of lignite; and minute particles of the same substance are disseminated throughout the strata. Pyrites occurs abundantly in small nodules and spheroidal masses; and this mineral generally pervades the lignite and wood. Towards the base of the cliff are the beds of sand and sandstone, with hard concretionary grit, containing the fossil trees; and...show more

Product details

  • Paperback | 108 pages
  • 189 x 246 x 6mm | 209g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236536509
  • 9781236536501