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Outlines of Physiography


Outlines of Physiography

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    Available in PDF Format | Outlines of Physiography.pdf | Unknown
    William Lawson
General Books publication date: 2009 Original publication date: 1885 Notes: This is a black and white OCR reprint of the original. It has no illustrations and there may be typos or missing text. When you buy the General Books edition of this book you get free trial access to where you can select from more than a million books for free. Excerpt: In the Tertiariea we first meet with undoubted evidence of exogenous or deciduous trees, such as the oak, elm, and beech: while among animals we have species of every existing order except man. It is during this period, also, that we first meet with traces of that geographical distribution of animals which now exists. In the older systems, so far as has been ascertained, the fossils were almost identical, in whatever part of the world they were found. In the Tertiaries, however, the fossils found in South America are allied to its present sloths, ant-eaters, and armadilloes: while iu Australia we meet with fossils akin to the marsupial family. Europe was at this time inhabited by gigantic pachyderms, including elephants and rhinoceroses, and abundant traces of these have been found in the British Islands. It would appear, indeed, that during the Eocene period Central Europe enjoyed an almost tropical climate: but by degrees the temperature was gradually lowered, until, at the close of the Pliocene age, the Glacial period commenced. The Tertiary deposits generally exhibit an irregular succession of clays, limestones, marls, sands, and grits, Fio. a -- Section of rocks from Abingdon to Isle of Wight, showing " basins" occupied by Tertiary deposits. and, so far at least as Europe is concerned, the deposits occupy well-defined tracts or basins: and hence we speak of the London basin, the Hampshire basin, the Paris basin, and the Vienna basin. The industrial products of the system are building-stone and marbles of various qualities, pipe and potter's clays, and gypsum. Lignite, or brown coal, is also ...  
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  • PDF | 228 pages
  • William Lawson
  • General Books LLC
  • Unknown
  • 5
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