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Nature and Man in America (Paperback) Loot Price: R426
Discovery Miles 4 260
Nature and Man in America (Paperback): Nathaniel Southgate Shaler

Nature and Man in America (Paperback)

Nathaniel Southgate Shaler

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Loot Price R426 Discovery Miles 4 260

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Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: CHAPTER III. Permanence of Continents; Evidence that their Areas have been Sea Floors. ? Evidence of slow Growth of Mountains. ? Proof that the Continents are ancient. ? Evidence from Organic Life; from the Physical Structure of Sediments. ? Devonian Black Shale. ?Continental Shelf; Conditions of its Formation.?Progressive Advance in Development of the Continent from Cambrian Time to the present Day. ? Successive Positions of Shore-line.?Variations in the Form of Continent; Subsidence during Glacial Period in Northern Portion; corresponding Uplift in Southern Portion. ? Evidence from the West Indies Islands; from Florida Rocks ? Summary. Our preliminary inquiry into the condition of continental growth appears to indicate that the great lands we term continents are the result in good part at least of mountain growth. The greater are substantially consequent on the development of the lesser elevations. The principal difficulty we encounter in this hypothesis is that it does not provide us with a beginning. It does not tell us why at certain points on this earthy ball mountains grow, and by the growth of their pedestals and foldings lift a portion of the earth's surface above the plane of the sea. It is something, however, if we esteem the inquiry sufficiently successful to show us in a general way that the two types of irregularities of the earth's surface, the continental masses and the mountains, are due to one and the same mode of action. The next problem before us concerns the measure of permanence of these important reliefs which in the form of the dry lands afford the principal theatre of" the higher realms of life. On this point the opinions of students of the earth are still somewhat divided. When geologists found that near the summits of many of the hig...

General

Imprint: General Books LLC
Country of origin: United States
Release date: August 2009
First published: August 2009
Authors: Nathaniel Southgate Shaler
Dimensions: 229 x 152 x 13mm (L x W x T)
Format: Paperback - Trade
Pages: 224
ISBN-13: 978-0-217-96973-4
Categories: Books
LSN: 0-217-96973-9
Barcode: 9780217969734

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