A Geological Map of the United States, and the British Provinces of North America: With an Explanatory Text, Geological Sections, and Plates of the Fossils which Characterize the FormationsGould and Lincoln, 1853 - 92 Seiten |
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Alabama Alleghany system basin Bay of Fundy Beaumont beds belonging Brachiopod Cape Breton Carboniferous circle of comparison Claiborne classification clay coal color composed cretaceous CRETACEOUS GROUP crystals deposits Devonian direction division earth earth's surface England Eocene epoch eruptive rocks Europe extends felspar formation fossiliferous rocks fossils France Gaspé geological map Geological Survey geologists globe granitic Green Mountains hornblende igneous rocks immense Island Jersey Lake Superior Lawrence Lawrentine limestone Lower Canada Lower Silurian masses Messrs metamorphic rocks mineralogical Mississippi Missouri modern rocks Mollusk moun Mountain system names Newfoundland North America Notre Dame Mountains notwithstanding Nova Scotia observations Ohio oölitic orographic Owen paleozoic parallel Pennsylvania porphyritic present quaternary recognized Red Sandstone regions River Rocky Mountains Russia sand Schists sedimentary rocks silicate slate species Spirifer strata system of dislocation systems of mountains tains Tennessee tertiary tion trap Upper Silurian Virginia Wisconsin York
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Seite 88 - Brunswick. By Abraham Gesner. London, 1847. NEW ENGLAND STATES. Geological Survey of the State of Maine ; Reports of Progress for the years 1837 to 1840. By Charles T. Jackson. Augusta. First Annual Report on the Geology of the State of New Hampshire. By Charles T.
Seite 90 - (New Mexico). By Lieut. JH Simpson. Washington, 1849. Geology of the United States Exploring Expedition, under the command of Charles Wilkes. By James D. Dana. New York, 1850. Reports of the Secretary of War, with
Seite 64 - accomplished, the determination of the great circle of comparison can only follow after numerous observations, well combined with each other; and thus, while the observations are not very multiplied, or spread over a wide space, we can advance towards this determination only by successive approximations.
Seite 79 - very extraordinary volume. The variety known as compact felspar is most frequently a compound of the elements of some felspar with a surplusage of silicic acid beyond that required for the silicates of that mineral; so that, when opportunities have occurred for crystallization of the parts, the result has been a compound of felspar and quartz, or a
Seite 7 - POISSONS FOSSILES," MEMBER OF THE ROYAL SOCIETY, LONDON, OF THE INSTITUTE OF FRANCE, ETC. ETC. MY DEAR SIR : IT is with great pleasure that I avail myself of your kind permission to dedicate to you this slight sketch of a