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The Student's Lyell; A Manual of Elementary Geology (Paperback) Loot Price: R772 Discovery Miles 7 720
The Student's Lyell; A Manual of Elementary Geology (Paperback): Charles Lyell
The Student's Lyell; A Manual of Elementary Geology (Paperback): Charles Lyell

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The Student's Lyell; A Manual of Elementary Geology (Paperback)

Charles Lyell

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Loot Price R772 Discovery Miles 7 720

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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. 1896 edition. Excerpt: ... thousands of feet in thickness, and of vast horizontal extent, wholly devoid of saliferous or gypseous matter. There are also deposits of gypsum and of common salt, as in the blue clay formation of Sicily, without any ORIGIN OF ROCK-SALT 322 CH. XVIII. accompanying red sandstone or red clay. These red deposits may possibly be accounted for by the decomposition of gneiss and mica schist, which in the Eastern Grampians of Scotland has produced a mass of detritus of precisely the same colour as the New Red Sandstone. It is a general fact, and one not yet very satisfactorily accounted for, that scarcely any fossil remains are ever preserved in stratified rocks in which red oxide of iron abounds; and when we find fossils in the New or Old Red Sandstone in England, it is in the grey, and usually calcareous beds that they occur. Beds of rock-salt are generally attributed to the evaporation of lakes or lagoons communicating at intervals with the ocean. Sir A. Ramsay has remarked in regard to the Trias that it was probably a Continental Period with many inland lakes and seas, the Keuper marls of the British Isles having been deposited in a great lake, fresh or brackish, at the beginning, and afterwards rendered salt by evaporation. 'Were the rainfall, ' he observed, 'of the area drained by the Jordan to increase gradually, the basin of the Dead Sea would by degrees fill with water, and successive deposits of sediment would gradually overlap each other on the shelving slopes of the lake basin in which solid salts had previously been deposited. There are examples of this kind of overlap in the New Red Marl of England, in Somerset, Gloucester, Hereford, and Leicester. Sir A. Ramsay suggests that the red peroxide of iron of the sands and clays may in itself...


Imprint: Rarebooksclub.com
Country of origin: United States
Release date: July 2012
First published: July 2012
Authors: Charles Lyell
Dimensions: 246 x 189 x 14mm (L x W x T)
Format: Paperback - Trade
Pages: 258
ISBN-13: 978-1-236-62552-6
Barcode: 9781236625526
Categories: Books
LSN: 1-236-62552-8

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