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) (14573212757).jpg

Identifier: reportsofexplora02unit_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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he Carboniferous limestone. REMARKS. The fossils which Captain Pope has collected, with the exception of No. 91, are all such ascharacterize the Cretaceous formation. This formation is well represented by Grypho?a Pitcheriand Exogyra Texana from the Big springs of the Colorado. These fossils are well known inthe Cretaceous formation of Texas. The former was first described by Dr. Morton, of Phila-delphia,2 who received his specimens from the plains of Kiamesha, Arkansas. He also statesthat he has seen other specimens from the falls of Verdigris river, in the same territory. These fossils serve to indicate the development of the Cretaceous formation at the followingpoints: Banks of the Eed river, near Preston;*Big springs of the Colorado; Elm fork of theTrinity river; and a point twenty miles east of the Sand hills, on the Llano Estacado. I havetherefore colored these places as Cretaceous upon the map. 1 Report of Captain Pope, p. 77. 2 Mortons Syn. Org. Rem. Cret. Groups U. S., p. 55.
Text Appearing After Image:
.... —t?^; ■ •-•^^SSi - i emu, ™r«IOCMAM)Bto rHBBKDRIVER ■ •=ssf r j . , J _ i 1 « 1 ....... L,.... L ■ . T A 0 « t r ———— ? J H 1* !( i ii -i _^ . - - ■ am ■— en™ cm*-— isa— CATALOGUE THE GEOLOGICAL COLLECTION BEE VET CAPTAIN JOHN POPE, 1853. I.—ROCKS AND MINERALS. Name. Carboniferous limestone - Limestone, probably Carboniferous. (2 specimens) Granite and limestone. (4 specimens) White granular earth. Limestone Limestone Transparent selenite Dark limestone -. Compact sandstone — ? Limestone Gypsum — Gypsum in layers Gypsum in layers and plates Red fibrous gypsum Limestone (1 Jurassique ) Compact, white, granular limestone Reddish sandstone Grey sandstone Coarse-grained grey sandstone, with pebbles—calcareous.Limestone of a light-drab color, with small spherical cavi-ties. Pebbles of agate quartz and red porphyry Sandstone, reddish and coarse-grained—calcareous Large pebble and coarse grains of sand cemented by acalcareous matrix. Sele

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