Mechanisms for lithospheric heat transport on Venus Implications for tectonic style and volcanism

Details Mechanisms for lithospheric heat transport on Venus Implications for tectonic style and volcanism Mechanisms for lithospheric heat transport on Venus Implications for tectonic style and volcanism

Nov 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.9236s&link_type=abstract

Journal of Geophysical Research, vol. 87, Nov. 10, 1982, p. 9236-9246.

Physics

122

Conductive Heat Transfer, Lithosphere, Planetary Temperature, Plates (Tectonics), Venus Surface, Buoyancy, Subduction (Geology), Topography, Volcanoes

Scientific paper

The mechanisms of plate recycling, lithospheric conduction, and hot spot volcanism are each evaluated to determine which is the dominant mode of lithospheric heat transfer on Venus, with attention given to the implications of each mechanism for the interpretation of Venus surface features. It is thought that plate recycling on Venus cannot be excluded on the basis of either theoretical arguments or present observations on topography and radar backscatter. Landforms caused by plate convergence and divergence on Venus, it is noted, would differ substantially from those on the earth owing to the high surface temperature and the absence of oceans on Venus, the lack of free or hydrated water in subducted material, the possibility that subduction would more commonly be accompanied by lithospheric delamination, and the rapid spreading rates that would be required if plate recycling removed a significant fraction of the internal heat. The possibility that the dominant mechanism early in the history of the planet was different from the one at work now is thought to merit consideration.

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