Mathematics – Logic
Scientific paper
Mar 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27..525h&link_type=abstract
Lunar Planet. Sci. 27th, vol. , p. 525-526 (1996).
Mathematics
Logic
3
Basalt: Flood, Plains, Tectonics: Style, Venus: Stratigraphy, Volcanism
Scientific paper
The Venus cratering record has been interpreted in terms of a geologically recent (~300-500 Ma ago), possibly catastrophic global tectonic and volcanic resurfacing event followed by diminished levels of activity; we examine the stratigraphic and volcanic record and its petrogenetic implications in order to test this model and understand its consequences. We find that there are definite planet-wide changes in volcanic and tectonic style and flux with time and that volcanic changes can be interpreted in terms of variations in the depth and percent partial melting. Although peak flux decreased with time, the average flux was apparently never much more than values typical of recent global volcanism on Earth. These observations suggest that early tessera-related tectonism was the major factor in the eradication of pre-existing impact craters and that post-tessera volcanism was areally widespread but volumetrically relatively low.
Basilevsky Alexander T.
Head James W. III
Hess Paul C.
Wilson Leslie
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