The American Geologist, Band 20Newton Horace Winchell Geological Publishing Company, 1897 Includes section "Review of recent geological literature." |
Inhalt
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Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
Amer AMERICAN GEOLOGIST basin beach beds Boston boulders cañon valley Carboniferous channel character coast conglomerate Congress creek Cretaceous Croix Falls Croix river Dalles deposits depth Devonian diabase drift driftless area east eastern elevation epidotic erosion evidence extends fauna feet formation fossils Geol Geological Survey geologists geology glacial glacier granite gravel Hist igneous rocks Iowa island Jour lake Agassiz lake Superior land Lawson limestone loess lower magnetite miles mineral Minn Minnesota Miocene Mississippi monocline moraine mountain northern observed occur origin outcrops peneplain plain Plate plateau Pleistocene Pliocene portion present Proc Prof pyroxene region Remarks Renevier residuary clay ridge sand sandstone schists sedimentary septa shales shore side slope species specimens strata streams striæ structure surface Taconic Taylor's Falls terrace Tertiary thickness tion trilobites Upham upper western Wisconsin
Beliebte Passagen
Seite 312 - Additional notes on fossil sponges and other organic remains from the Quebec group at Little Metis, on the lower St.
Seite 111 - Sketch of the coastal topography of the north side of Lake Superior, with special reference to the abandoned, strands of Lake Warren.
Seite 316 - Virginia: 1. That there is hereby established a State Geological and Economic Survey which shall be under the direction of a commission composed of the governor, the treasurer, the president of the West Virginia University, the president of the State Board of Agriculture, and the director of the West Virginia Agricultural Experiment Station...
Seite 133 - ... ventured to enunciate the principle that in a region of eruptive activity the succession of eruptions in general commences with magmas representing a mean composition and ends with those of extreme composition.
Seite 312 - Historical sketch, embracing an account of the progress of investigation concerning the physical features and natural resources of Maryland. Md. Geol. Surv., vol. I, 1897. pp. 43-138. Outline of present knowledge of the physical features of Maryland, embracing an account of the physiography, geology, and mineral resources.
Seite 175 - as represented along the Mississippi river is at the base of the Chouteau limestone (limited). At this horizon there is so great a faunal hiatus that there is scarcely a species that is common to the beds on either side. 2. That instead of the so-called Kinderhook containing in its fauna a mingling of Devonian and Carboniferous types there are really two...
Seite 209 - His native Irish wit did much to render his lectures entertaining, especially to those who were not the victims of it, he being particularly unmerciful in his rebukes and exposures of shams and affectations.
Seite 13 - ... morphological replacement of limestone by double decomposition between ferrous salts and calcic carbonate, the former being derived from ferrous silicates; the other type is a partial, and not necessarily pseudomorphic, replacement of ferrous silicates in weathered basic rocks, or more explicitly, a residual concentration or fixation of iron oxides incidental to development of soluble alkaline carbonates from weathering oxidation or splitting up of ferriferous silicates. The common association...
Seite 138 - An examination of the physical features of the State with reference to their practical bearing upon the occupations of the people. (4). The preparation of special geological and economic maps to illustrate the resources of the State.
Seite 176 - Carboniferous in its general aspect. 3. The basal line of the lower Carboniferous or Mississippian series is the base of the Chouteau limestone, and the lowest member of the fourfold series contains only one formation, instead of the three heretofore commonly ascribed to it. 4. The early reference of a part of the so-called Kinderhook or "Chemung...