Convection pattern and stress system under the African plate

Details Convection pattern and stress system under the African plate Convection pattern and stress system under the African plate

Sep 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977pepi...15...60l&link_type=abstract

Physics of the Earth and Planetary Interiors, vol. 15, no. 1, Sept. 1977, p. 60-68.

Physics

3

African Rift System, Convective Flow, Earth Mantle, Stress Concentration, Tectonics, Biotite, Diamonds, Peridotite, Stress Distribution, Structural Basins, Terradynamics

Scientific paper

Studies on tectonic forces from satellite-derived gravity data have revealed a subcrustal stress system which provides a unifying mechanism for uplift, depression, rifting, plate motion and ore formation in Africa. The subcrustal stresses are due to mantle convection. Seismicity, volcanicity and kimberlite magmatism in Africa and the development of the African tectonic and magnetic features are explained in terms of this single stress system. The tensional stress fields in the crust exerted by the upwelling mantle flows are shown to be regions of structural kinship characterized by major concentration of mineral deposits. It is probable that the space techniques are capable of detecting and determining the tectonic forces in the crust of Africa.

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