Some Problems of Development of the Earth's Crust and Upper Mantle of Oceans

  1. Leon Knopoff,
  2. Charles L. Drake and
  3. Pembroke J. Hart
  1. V. V. Beloussov

Published Online: 18 MAR 2013

DOI: 10.1029/GM012p0449

The Crust and Upper Mantle of the Pacific Area

The Crust and Upper Mantle of the Pacific Area

How to Cite

Beloussov, V. V. (2012) Some Problems of Development of the Earth's Crust and Upper Mantle of Oceans, in The Crust and Upper Mantle of the Pacific Area (eds L. Knopoff, C. L. Drake and P. J. Hart), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM012p0449

Author Information

  1. Institute of the Physics of the Earth, Moscow, USSR

Publication History

  1. Published Online: 18 MAR 2013
  2. Published Print: 20 APR 2012

Book Series:

  1. Geophysical Monograph Series

Book Series Editors:

  1. Waldo E. Smith

ISBN Information

Print ISBN: 9780875900124

Online ISBN: 9781118663738

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Keywords:

  • Continental drift;
  • Earth's crust;
  • Ocean boundaries;
  • Oceanization;
  • Suboceanic crust;
  • Tectonosphere;
  • Truncation;
  • Upper mantle

Summary

The truncation of the inner structure of continents by the boundaries of oceans is inconsistent with the theory that the continents were formed by gradual differentiation of the basaltic crust, which was preserved in its initial state in oceans. The hypotheses of horizontal drift of continents cannot withstand criticism. They contradict the equality of the mean thermal flux on the continents and oceans, the long-term spatial stability of tectonic zones on continents, and a number of other phenomena. The data favor ‘oceanization,’ i.e., the transformation of continental crust into oceanic, in situ. The transitional stage of this process can be found in several places. It is supposed that blocks of the continental crust can become heavier by intrusions of the basic and ultrabasic magma, experience metamorphism with the increase of density, and sink into the mantle, where they melt and dissolve. An idea is suggested concerning the general regularities of development of the tectonosphere (crust and upper mantle).