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)
United States. War Department, author · Washington [D.C.] : A.O.P. Nicholson, printer · leaf 536
ar sandstone, eighteen feet thick and horizontally stratified.” Captain Marcy2 also reports them as 150 feet high, and states that they are of porous sandstone. “ They rise almost perpendicularly from the smooth prairie, are flat upon the top, and present every indication of having been raised out… … They are evidently of horizontal strata, which were once continuous, and which formed a plateau raised above the general level of the prairie, butj which, owing to the denudation or wearing away by rain-water and streams, has been cut by ravines, and separated into many portions, which now…
Pacific railroads -- Explorations and surveys · Discoveries in geography -- American · Natural history -- West (U.S.) · Natural history -- California · Indians of North America -- West (U.S.) · West (U.S.) -- Description and travel · California -- Description and travel · United States -- Discovery and exploration
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