The American Geologist, Volume 22Newton Horace Winchell Geological Publishing Company, 1898 - Geology Includes section "Review of recent geological literature." |
Contents
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Common terms and phrases
Acad acid American Geologist augite basalt basin beds Carboniferous cent Chamberlin Chelan chemical clay coast color Columbia conglomerate corallites coulée Cretaceous Croix crystalline crystals cuspate foreland deposits depth Devonian diabase dikes drift east erosion eskers evidence fauna feet feldspar fjord flow foreland formation fossils gabbro Geol Geological Survey geologists Glacial period glacial theory glacier gneiss gorge grains granite gravel hight hornblende Ice age ice-sheet igneous inches Iowa island Jour lake Chelan land later lava limestone loess lower magma magnetite mass material Methow miles mineral moraines mountains nearly northern occur Okanogan olivine origin orthoclase Osage paper pebbles phenomena plagioclase plates preglacial present probably Proc Prof pyroxene quartz region Rept river rock sand schists sections shales shore species strata streams surface terrace Tetradium thickness tion Upham upper valley waves
Popular passages
Page 165 - I do not mention these difficulties (to which I might add more) as any strong evidence against this theory. For so remarkably does it solve most of the phenomena of diluvial action, that I am constrained to believe its fundamental principles to be founded in truth.
Page 169 - ... and imagine this whole mass converted by earthquake pulsations of the breadth which such undulations have, into a series of stupendous and rapidmoving waves of translation, helped on by the still more rapid flexures of the floor over which they move, and then advert to the shattering and loosening power of the tremendous jar of the earthquake, we shall have an agent adequate in every way to produce the results we see, to float the northern ice from its moorings, to rip off, assisted with its...
Page 345 - ... of the land at the close of the glacial period, when the lake was nearer sea-level than at present by more than 600 feet, and when the deep bay extended inland up the present valley of the Nastapoka to or near the outlet of the lake, with such conditions it would be easy for seals to reach the lake, and having found it full of fish they probably lost the inclination to return to the sea.
Page 166 - The printed accounts of the annual meetings of the Association of American Geologists and Naturalists give evidence of a lively interest in the subject of the drift, but there seems to have been no champion of the discredited glacial hypothesis ; or if so he was not thought worthy of record. There was much difference of opinion as to the agencies of the drift but all were hostile to the new theory. The brothers Rogers, with...
Page 164 - Whence then this immense body of ice, which has scattered boulders over so vast a tract of country, appearing too at an epoch subsequent to the extinction of the mastodon and other mammalia, which evidently lived in this region and enjoyed an equatorial climate anterior to the icy period? Nothing can reconcile this apparent contradiction, but the admission of a fall of temperature far below that which prevails in our day, freezing the enormous lakes of that period, and converting them into immense...
Page 166 - ... side of Murchison and Lyell, and the next year at the Boston meeting his elaborate paper on the drift favored the iceberg hypothesis. In 1843 he is quoted in the following words: "Professor Hitchcock remarked that so disastrous had been his experience in respect to the glacial theory of...
Page 382 - Cyrena fluminalis (fig. 17), which no longer lives in Europe, but inhabits the Nile, and many parts of Asia, including Cashmere, where it abounds. No species of Cyrena is now met with in a living state in Europe. Mr. Prestwich first observed it fossil at Itenchecourt, and it has since been found in two or three contiguous sand-pits, always in the fluvio-marine bed.
Page 130 - GREAT ICE' A Narrative of Life and Work along the Shores and upon the Interior Ice-Cap of Northern Greenland in the Years 1886 and 1891-1897 WITH A DESCRIPTION OF THE LITTLE TRIBE OF SMITH-SOUND ESKIMOS, THE MOST NORTHERLY HUMAN BEINGS IN THE WORLD, AND AN ACCOUNT OF THE DISCOVERY AND BRINGING HOME OF THE "SAVIKSUE," OR GREAT CAPE-YORK METEORITES BY ROBERT E.
Page 132 - A report on the Niagara limestone quarries of Decatur, Franklin, and Fayette Counties, with remarks on the geology of the middle and upper Silurian rocks of these and neighboring (Ripley, Jennings, Bartholomew, and Shelby) Counties, Indiana,