Bulletin Of The Geological Society Of America 1904 Vol 15 Classic Reprint

Author : T. C. Chamberlin
Publisher : Forgotten Books
ISBN 13 : 9780282714901
Total Pages : 900 pages
Book Rating : 4.7/5 (149 download)

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Download or read book The Journal of Geology, 1907, Vol. 15 written by T. C. Chamberlin and published by Forgotten Books. This book was released on 2017-10-20 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Journal of Geology, 1907, Vol. 15: A Semi-Quarterly Magazine of Geology and Related Sciences The line of the Southern Pacific Railway passes over the water shed referred to at Madrone station, and the elevation at that place, as officially published, is 345 feet.1 This elevation, though much greater than was supposed, would not alone, however, seriously inter fere with Dr. Le Conte's theory. But if we imagine the Golden Gate closed, it is necessary, in order to test the validity of the hypothesis, to know Where the lowest gaps are through which the water could escape to the sea. If the Madrone saddle, even with an elevation of 345, is the lowest pass to the ocean, then of course the water would flow out that way. But the Coast Survey's topographic map Of San Francisco shows that, if the present Golden Gate were closed and the water compelled to find a new outlet, it would first flow over the divide at Colma seven miles south of the City Hall of San F ran cisco; this gap has an elevation of only 190 feet above tide. North of San Francisco it would also flow into the sea from Richardson Bay near Sausalito by way of Elk Valley, which has a watershed only 190 feet above tide-level. Without further inquiry into the existence of other low divides between the bay and the ocean, it is evident that, even if it were admitted that the Golden Gate be a late topographic development, the Sacramento drainage did not lately flow into the Bay of Monterey by way of the Santa Clara Valley. It is evident also that the resem blance between the fish faunas of the Sacramento drainage and the streams flowing into Monterey Bay must be sought elsewhere. 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.