World-Life; Or, Comparative Geology Volume 1

World-Life; Or, Comparative Geology Volume 1

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1889 edition. Excerpt: ...moon's secular acceleration; also support of mountain chains. Probably mostly good. (6) A solid nucleus and a plastic zone, either continuous (Fisher) or interrupted (W. Hopkins). Explains terrestrial rigidity; also, in part, volcanic and seismic phenomena. Sir C. Lyell: Principles of Gtology, 6th ed., 1850, pp. 167-8. The mashing process Is recognized by Prof. C. H. Hitchcock in his discussion of the White Mountains (Geology of New Hampshire, 1,518-22, 1874). He also finds strata crumpled in detail and not in the mass and all alike, as represented by Rogers (id., ii, 114,1877). (c) Action of elastic vapors beneath the crust. Explains volcanic and seismic phenomena. Objection. Inadequate for mountain formation and mainten-ance. Good. (d) Secular contraction of the earth more rapid in the nucleus, thus causing stresses in the crust (C. Prevost). (e) The stresses of the crust find relief in wrinkles and plications. Explains elevations, anticlinals and synclinals with or without plications. Objections, (aa) Contraction insufficient (Button, Fisher). To be considered. (66) The wrinkles would not serve as germs of elongated mountain ranges (Dutton). Good. (/) The stresses of the crust find relief in mashing together. Explains heat and metamorphism (Wurtz, Mallet) as well as plications (Le Conte). Objections, (aa) Would not develop sufficient heat (Dutton). To be considered. (66) The heat would not be sufficiently localized (Dutton, Fisher). Not good. (g) The mashing together sometimes results in mountain-like upswellings which have still geater down-swellings to counterpoise them (Le Conte, Fisher). Explains the equilibrium as in an assumed state of flotation, and relieves the crust of strains derived from their weight (if that be necessary) more

Product details

  • Paperback | 204 pages
  • 189 x 246 x 11mm | 372g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 123667555X
  • 9781236675552