Thermal buoyancy on Venus - Underthrusting VS subduction

Details Thermal buoyancy on Venus - Underthrusting VS subduction Thermal buoyancy on Venus - Underthrusting VS subduction

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992georl..19.1707b&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 19, no. 16, Aug. 21, 1992, p. 1707-1710.

Other

5

Buoyancy, Planetary Geology, Subduction (Geology), Tectonics, Venus (Planet), Basalt, Eclogite, Phase Transformations, Planetary Mantles

Scientific paper

The thermal and buoyancy consequences of the subduction endmember are modeled in an attempt to evaluate the conditions distinguishing underthrusting and subduction. Thermal changes in slabs subducting into the Venusian mantle with a range of initial geotherms are used to predict density changes and, thus, slab buoyancy. Based on a model for subduction-induced mantle flow, it is then argued that the angle of the slab dip helps differentiate between underthrusting and subduction. Mantle flow applies torques to the slab which, in combination with torques due to slab buoyancy, act to change the angle of slab dip.

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