Lava flows on Venus: Analysis of motion and cooling

Details Lava flows on Venus: Analysis of motion and cooling Lava flows on Venus: Analysis of motion and cooling

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993lpi....24..249c&link_type=abstract

In Lunar and Planetary Inst., Twenty-fourth Lunar and Planetary Science Conference. Part 1: A-F p 249-250 (SEE N94-12015 01-91)

Astronomy and Astrophysics

Astrophysics

1

Dynamic Characteristics, Flow Distribution, Lava, Magma, Surface Cooling, Venus Surface, Volcanoes, Fluid Flow, Planetary Evolution, Venus (Planet), Volcanology

Scientific paper

Effusive volcanism is a major mechanism for resurfacing on Venus. The large edifice complexes are marked by lava flow fields which extend hundreds of kilometers from their apparent source vents. Earlier work on the emplacement of lava predicted few major differences in flow length between Venus and the Earth (for similar magmas) based primarily on assessment of the relative rates of heat loss to their respective atmospheres. This analysis, combined with the obvious presence of very long lava flows on Venus, has led to suggestions that basalt magmas on Venus may be of generally lower viscosity or that magma effusion rates exceed terrestrial norms. If correct, these hypotheses might imply systematically different chemical and dynamic characteristics for volcanic processes on Venus, and a somewhat catastrophic history for many of the large edifices and flow fields. The mechanics of magma motion and cooling are re-examined, and some of the issues involved in analyzing flows on Venus are discussed.

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