On the possibility of plate tectonics on Venus

Details On the possibility of plate tectonics on Venus On the possibility of plate tectonics on Venus

Jan 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982icar...49...86b&link_type=abstract

Icarus, vol. 49, Jan. 1982, p. 86-96.

Computer Science

21

Erosion, Geomorphology, Hypsography, Plates (Tectonics), Topography, Venus (Planet), Crusts, Landforms, Pioneer Venus Spacecraft, Radio Altimeters, Structural Properties (Geology), Subduction (Geology), Venus Atmosphere, Venus, Plate Tectonics, Surface, Atmosphere, Erosion, Sedimentation, Velocity, Sediments, Thickness, Subduction, Topography, Temperature, Crust, Diagrams, History, Ridges, Shape, Particles, Transport, Heat Flow, Comparisons, Morphology

Scientific paper

Several arguments have been put forward suggesting that Venus has no plate tectonics. Some of these arguments are examined and it is suggested that because conditions on the surface of Venus are very different from those on Earth, the arguments should be reconsidered. It is shown that in the absence of an ocean, the differential hypsographic curve of earth would probably have only one mode, like that for Venus. It is shown that the atmosphere of Venus is quite capable of erosion, provided that near-surface velocities are about 1 m sec or more, and that therefore the oceanic areas on Venus, should they exist, are probably covered with some thickness of sediment. If sedimentation on Venus is at all rapid, it is likely that subduction zones could be filled up and made unrecognizable topographically. Because Venus does not have an ocean, and because its surface temperature is much greater than that on earth, ridge crests on Venus have a much smaller topographic expression than those on earth. If significant sedimentation occurs they would be completely unrecognizable topographically.

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