Convective thinning of the lithosphere: a model constrained by geoid observations

Details Convective thinning of the lithosphere: a model constrained by geoid observations Convective thinning of the lithosphere: a model constrained by geoid observations

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989pepi...57..330d&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 57, Issue 3-4, p. 330-343.

Physics

11

Scientific paper

Geoid observations in the oceans suggest that lithospheric thinning is effected by small-scale convection within hot-spot material trapped in dimples a few tens of kilometers deep at the base of the lithosphere. Significant thinning can occur within 5 Ma if the viscosity of the convecting material is 1016 Pa s. Partial melting can enhance considerably the vigour of convection and the same rate of lithospheric thinning is obtained for a viscosity about five times higher. These results are derived from convection models with a realistic temperature-dependent rheology using the mean field approximation.

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