File:Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean (1855) (14757075341).jpg

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Identifier: reportsofexplora05unit_0 (find matches)
Title: Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean
Year: 1855 (1850s)
Authors: United States. War Dept Henry, Joseph, 1797-1878 Baird, Spencer Fullerton, 1823-1887 United States. Army. Corps of Engineers
Subjects: Pacific railroads Discoveries in geography Natural history Indians of North America
Publisher: Washington : A.O.P. Nicholson, printer (etc.)
Contributing Library: San Francisco Public Library
Digitizing Sponsor: California State Library Califa/LSTA Grant

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CHAPTER XII. GEOLOGY OF THE VICINITY OF SAN FRANCISCO. enumeration of the principal formations—granite north and south op the golden gate.—geological map.—san francisco sandstone.—points at which it is exposed.—section at terba buena.—sandstone and shales.—decomposition of the rock. Globular masses, the result of decomposition.—Color of the rock.—Lithological characters.—Remains of plants.—Strataunder the city.—resemblance to trap rock.—point lobos—angel island.—states prison quarry.— section of the strata.—Dislocation of a bed of the sandstone.—Marin island.—Benicia sandstone.—Navy point.—Conglomerate.—Section of thestrata at nayy point.—hard bluish-green masses.—probable synchronism of the strata with those near san francisco.—Extension of the strata southwards near mount diablo.—Sandstone at new almaden, ban juan, and north of the golden gate.—bellingham bay sandstone probably the same. age of the formation.—fossils.—probabl

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United States. War Dept; Henry, Joseph, 1797-1878; Baird, Spencer Fullerton, 1823-1887;

United States. Army. Corps of Engineers
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27 July 2014


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