1st -12th Annual Report of the United States Geological and Geographical Survey of the Territories ...U.S. Government Printing Office, 1872 - 12 sider |
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angle animals appearance basin Bear River Black's Fork bluffs bones Bridger Bridger's Pass Buttes Camp Cañon carboniferous cattle caudal character Cir.-cu Cir.-str clays coal Colorado Colorado Territory convex Creek cretaceous Cu.-str Denver deposits dorsal east elevation elytra eocene extend Fork of Green formations Fort Bridger Fort Fetterman fossils fragments fresh-water genus geological granite grass gray Green River Henry's Fork hills hundred feet inch inclining irrigated Kansas land Laramie Laramie Plains layers length Lesqx limestone lower margin marls miles miocene Missouri nearly Niobrara River North Platte northwest Oreodon Pass plains portion posterior probably pronotum quartzites range region remains ridge rocks Rocky Mountains Salt Lake sand sandstone Sept shale shells side slope southwest species specimens strata streams summit surface Sweetwater teeth tertiary beds thickness tion Uinta Mountains Union Pacific Railroad upper valley vertebræ width Wyoming Territory
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Side 97 - Notes Explanatory of a Map and Section Illustrating the Geological Structure of the Country Bordering on the Missouri River, from the Mouth of the Platte River to Fort Benton.
Side 179 - ... fragments of one great basin, interrupted here and there by the upheaval of mountain chains, or concealed by the deposition of newer formations,"!
Side 378 - These plants were figured and described as an appendix to a paper on species of fossil plants from the tertiary of the State of Mississippi.* Though the lot of these.
Side 331 - ... the California survey to be of triassic and Jurassic age. These slates are traversed in many localities by veins of quartz, which are the repositories of the gold that has made California so famous among the mining districts of the world. East of the Sierra Nevada we find a high and broad plateau, five hundred miles in width, and from four thousand to eight thousand feet in altitude, which stretches eastward to the base of the Rocky Mountains, and reaches southward far into Mexico. Of this interior...
Side 172 - The first part of the plain consisted simply of dried mud, with small crystals of salt scattered thickly over the surface. Crossing this, we came upon another portion of it, three miles in width, where the ground was entirely covered with a thin layer of salt in a state of deliquescence, and of so soft a consistence that the feet of our mules sank at every step into the mud beneath. But we soon came upon a portion of the plain where the salt lay in a solid state, in one unbroken sheet, extending...
Side 338 - Flowers opened their manycolored petals on meadow and hill-side, and filled the air with their fragrance, but only for the delectation of the wandering bee. Fruits ripened in the sun, but there was no hand there to pluck, nor any speaking tongue to taste. Birds sang in the trees, but for no ears but their own. The surface of lake or river was whitened by no sail, nor furrowed by any prow but the breast of the water fowl ; and the far-reaching shores echoed no sound but the dash of the waves, and...
Side 338 - ... fauna retains but a few dwarfed representatives. Noble rivers flowed through plains and valleys, and sea-like lakes, broader and more numerous than those the continent now bears, diversified the scenery. Through unnumbered ages the seasons ran their ceaseless course, the sun rose and set, moons...
Side 192 - In studying the agricultural capacity of the vast Rocky Mountain region and broad plains of the West, and calculating the probable development of the same, it is necessary to lay aside, to a great extent, all our ideas of agriculture based upon experience in the States.
Side 193 - This opinion is confirmed by the results of the recent explorations, which prove that the soil of the greater part of this region is, from its constituent parts, necessarily sterile ; and that of the remaining part, although well constituted for fertility, is, from the absence of rains at certain seasons, except where capable of irrigation, as uncultivable and unproductive as the other.
Side 130 - Station we come into the black clays of the lower cretaceous, and the appearance of the country becomes dreary and sterile in the extreme. The waters are alkaline, and there is no timber along the creeks except stinted willows, and very little grass or vegetation except chenopodiaceous shrubs, which are fond of this alkaline soil. As far as the eye can reach nothing can be seen but these somber, plastic clays. The surface also presents the characteristic monotonous appearance which is common wherever...