The American Geologist, Volume 35Newton Horace Winchell Geological Publishing Company, 1905 Includes section "Review of recent geological literature." |
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albite amblygonite Amer AMERICAN GEOLOGIST basin biotite Bridger beds Bull canyon cent channel clay cliffs coal continental continental shelf Cretaceous Croix crystals Dalles deep deposits depth described diabase drift east Emydidae erosion fauna feet feldspar fjords formation fossils genus Geol Geological Survey GEOLOGIST glacial gneiss gorge grain granite gypsum hight hornblende igneous inches Jour known lake land lepidolite limestone loess lower mass material mica miles minerals mining Minnesota Miocene mountains Museum nearly nebula North occur Ohio origin orthoclase Pala paper pegmatitic pegmatyte Pembina Peter sandstone planetesimals plastron plates portion present probably Prof professor quadrangle quartz region river rock Rock-salt Science shales shelf side siphuncle skull slope species specimen strata surface Temecula canyon temperature Tennessee thick tion tourmaline Troost turtles upper valley veins writer York
Popular passages
Page 90 - ... 1839, and in his Eighth Report, in 1845, but in the series of reports by Troost the subject is not given the prominence that has been accorded it by later investigators. Troost, G., Third Geological Report to the Twenty-first General Assembly of the State of Tennessee Oct., 1835, p. 3.
Page 204 - If with these potent forces thus nearly balanced the sun closely approaches another sun or body of like magnitude — suppose one several times the mass of the sun, since it is regarded as a small star — the gravity which restrains this enormous elastic power will be relieved along the line of mutual attraction, on the principle made familiar in the tides. At the same time the pressure transverse to this line of relief is increased. . Such localized relief and intensification of pressure must,...
Page 201 - Under the typical form of the planetesimal hypothesis it is assumed that the parent nebula of the solar system consisted of innumerable small bodies, planetesimals, revolving about a central gaseous mass, somewhat as do the planets to-day.
Page 103 - Very commonly it impregnates the waters, both of streams and springs, making them unfit for use. At Hunters Hot Springs, on the north bank of Yellowstone River, about 20 miles east of Livingston, the hot waters are now depositing gypsum and the old hot spring fissures are filled by a mass of gypsum and stilbite.
Page 245 - On the Origin of the Marine (Halolimnic) Fauna of Lake Tanganyika. By WH HUDLESTON, FRS Journal of Transactions of the Victoria Institute, London, vol.
Page 214 - ... discussed on the basis of that velocity. The energy due to that velocity would more than * " The Moon's Face, a Study of the Origin of its Features," address as retiring President, delivered December 10, 1892, Bulletin of the Philosophical Society of Washington, DC, vol. xii, pp. 241-292, with one plate and 14 figures in the text ; published April, 1893. Referring to early suggestions of meteoric accumulation of the mooii, and of other cosmic bodies, Mr.
Page 137 - Osteology of Haplocanthosaurus, with description of a new species, and remarks on the probable habits of the Sauropoda and the age and origin of the Atlantosaurus beds.
Page 202 - This last qualification seems necessary, for the volume of these nebulae is often very great, and yet they appear to intercept but little light and give no signs of great attractive power. The prevailing form of these nebulae is the spiral as determined by the late Professor Keeler, and this form particularly characterizes the smaller nebulae recently brought to knowledge by improved instruments and manipulative skill. These newly discovered nebulae are estimated to number at least ten times the...
Page 202 - Laplace, these molecules would probably become planetesinials instead of members of a true gaseous body. * * * There is reason to believe that this method would really be almost the only systematic one by which a gaseous spheroid of the Laplacian type would detach material from its equatorial belt. * * * * * * To develop the hypothesis as definitely and concretely as possible, I have further chosen a special case from among those that might possibly arise, the case in which the nebula is supposed...
Page 216 - During the whole period of growth the surface lost heat by radiation, but the process of growth cannot have been slow enough to permit the concurrent dissipation of all the impact heat. On the one hand, there should have been some storage of heat in the interior, and on the other hand, the stored heat can never have sufficed for the liquefaction of the nucleus. Toward the close of the process, when blows were hard but rare, liquefaction was a local and temporary surface phenomenon, but the general...