Mantle upflow under North America and plate dynamics

Details Mantle upflow under North America and plate dynamics Mantle upflow under North America and plate dynamics

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984natur.311..428g&link_type=abstract

Nature (ISSN 0028-0836), vol. 311, Oct. 4, 1984, p. 428-433. Research supported by the Natural Sciences and Engineering Research

Mathematics

Logic

25

Continental Shelves, Earth Mantle, Geodynamics, North America, Plates (Tectonics), Convection, Geoelectricity, Geological Faults, Geotemperature, Stress Analysis

Scientific paper

Observations of topography, seismology, heat flow, electromagnetic geophysics, petrochemistry, and the orientation of the stress tensor in the crust are reviewed which combine to support the view that an upcurrent exists in the mantle below western North America. This implies that during the Tertiary the East Pacific Rise was a ridge of the active type, driven by a divergent upcurrent in the underlying mantle. For plate dynamics, a principal implication is that at least some tectonic plates are actively driven by mantle circulation.

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