An Examination of the Transport and Emplacement of Long Run-Out Debris Masses Associated with Modified Domes on Venus

Details An Examination of the Transport and Emplacement of Long Run-Out Debris Masses Associated with Modified Domes on Venus An Examination of the Transport and Emplacement of Long Run-Out Debris Masses Associated with Modified Domes on Venus

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27..181b&link_type=abstract

Lunar and Planetary Science, volume 27, page 181

Mathematics

Logic

Domes, Mass Movement, Transport, Venus, Volcanism

Scientific paper

Evidence for slope failures exists on Mars, the Moon, Earth and Venus, but the processes involved in the transport and emplacement of large mass movements (> 10^6 m^3) remain poorly understood. The majority of models proposed to explain the long travel distances and low coefficients of friction of large mass movements are based on the concept that debris were fluidized either by internally or externally derived processes. The mass movements G1 and G2 with the longest run-outs on Venus are of particular interest since they are large and appear to have been highly mobile, tending to travel further for a given vertical drop than mass movements on Earth, Mars and the Moon. This mobility may be explained if a fluidizing agent or lubricant enhanced the locomotion of the debris, but in the absence of water on Venus another medium must be postulated. Likely influences and controls on the transport and emplacement of debris masses on Venus can be divided into those resulting from the geological and geomorphological conditions and those that result form environmental conditions. Having examined the geological and geomorphological influences on the transport and emplacement of debris masses on Venus it appears that neither the nature of the rock mass, the site of the slope failures, nor its traveled path can adequately account for the tendency for mass movements on Venus to travel further for a given vertical drop than mass movements on the other terrestrial planets. The effects of atmospheric conditions on Venus seem likely to be the important factor in explaining the apparent mobility of large rock masses over the surface of the planet.

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