The Problem of VolcanismYale University Press, 1914 - 273 pages |
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according aggregation amount andesites appear atmosphere basalt batholith beneath blocks bodies breccias central Chamberlin chemical coast composition compounds condition constituents continents cooling crater crystals density depth dikes displacement earth earth's surface elasticity elements eruption explosions faulting feet feldspars fissures flexure flow folding fractures gaseous gases globe granite greater heat heterogeneous hypothesis Hypothetical section igneous rocks instances intrusion Islands Jour Kilauea laccolith lavas less leucite Lick Observatory limestone liquid lithosphere mass material matter melting points miles molecular molecules molten lavas molten magmas Mont Pelée Mountains nucleus occur Ocean orthoclase Pacific Paleozoic particles Pelée physical planet possible pressure probably problem of volcanism produce quartz region result rhyolitic rigid rock magmas rock minerals sediments shales shearing siliceous sills solid solidified SPIRAL NEBULA strata stresses substance take place temperature tuffs U. S. Geol vapor viscosity volcanic activity volcanic cones volcanic lavas volume wall rocks warping Yellowstone National Park
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Page 202 - Geology of the coast and islands between the Strait of Georgia and Queen Charlotte sound, BC — by J.
Page iii - Mrs. Hepsa Ely Silliman Memorial Lectures. It , , was the belief of the testator that any orderly presentation of the facts of nature or history contributed to the end of this foundation more effectively than any »,' attempt to emphasize the elements of doctrine or of creed; and he therefore provided that lectures on dogmatic or polemical theology should be excluded from the scope of this foundation, and that the subjects should be selected rather from the domains of natural science o , ., and history,...
Page iii - NEW YORK CHARLES SCRIBNER'S SONS 1908 COPYRIGHT, rqo4 By YALE UNIVERSITY Published, March, 1904 THE SILLIMAN FOUNDATION. In the year 1883 a legacy of eighty thousand dollars was left to the President and Fellows of Yale College in the city of New Haven, to be held in trust, as a gift from her children, in memory of their beloved and honored mother Mrs. Hepsa Ely Silliman. On this foundation Yale College was requested and directed to establish an annual course of lectures designed to illustrate the...
Page 39 - The one thing, perhaps, above all other things, which the progress of research is bringing into recognition is the immensity of the energy of the universe, of which energy only a small fraction is usually apparent to us, doubtless because it is chiefly in a state of equilibrium, and only becomes sensible when its equilibrium is disturbed.
Page iii - The Silliman Foundation IN THE YEAR 1883 a legacy of eighty thousand dollars was left to the President and Fellows of Yale College in the city of New Haven, to be held in trust, as a gift from her children, in memory of their beloved and honored mother, Mrs. Hepsa Ely Silliman. On this foundation Yale College was requested and directed to establish...
Page 154 - ... Pacific, all of which probably have a volcanic core, lie along lines which can be definitely distinguished and may be supposed to indicate a distinct structure of the ocean floor. It is possible that this has been over-emphasized. Iddings for instance says, "A primitive magma basin is then not a basin of liquid but a condition of the earth, obtaining possibly at various distances below the surface of the earth according to circumstances of composition, temperature and pressure.
Page 101 - The overwhelming evidence of innumerable exposures of contacts between intruded rock masses and wall rocks of different kinds shows that, in the greater part of the lithosphere exposed to view, the blending by melting and solution of wall rock and molten magma has not taken place to any considerable extent. Dikes of granite traverse beds of sandstone, limestone, and shale without changes in the chemical composition of the granite at the contacts with these different bodies, such as should be expected,...