Mechanical obstacles to the movement of continent-bearing plates

Details Mechanical obstacles to the movement of continent-bearing plates Mechanical obstacles to the movement of continent-bearing plates

May 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985georl..12..223l&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 12, May 1985, p. 223-225.

Physics

1

Continental Drift, Earth Movements, Geodynamics, Plates (Tectonics), Leading Edges, Ocean Bottom

Scientific paper

Selected geophysical problems associated with the concept of continental drift as an incidental corollary of plate movement are discussed. The problems include the absence of a suitable plate-driving mechanism for plates with continental leading edges, the absence of the low-velocity zone under shields, and continental roots of 400 to 700 km depths. It is shown that if continental drift occurs, it must use mechanisms not now understood, or that it may not occur at all, plate movement being confined to ocean basins.

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