The Stratigraphy of the Western American Trias (Classic Reprint) PDF Download

Author: J. P. Smith
Publisher: Forgotten Books
ISBN: 9781334488610
Category : Science
Languages : en
Pages : 68

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Book Description
Excerpt from The Stratigraphy of the Western American Trias The fossil marine faunas of the western coast of the United States, of British Columbia, Alaska, Japan, and India are fairly well known, especially in the Mesozoic era. These faunas are now similar, now different in the various provinces, or in parts of them, presenting an apparently inextricable confusion not capable of any rational explanation. But this confusion is only apparent, for when the faunas are studied in succession, a regular scheme can be traced in the relationships and diversities of this ancient region. And the changes that are noted point to changes in physical geography that would be insignificant in themselves, compared with continental uplifts and subsidences, though by no means insignificant in their effects. Also there is abundant independent physical evidence that these changes really took place, so they are in no sense merely hypothetical. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.