Mathematics – Logic
Scientific paper
Sep 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jgr....9310225f&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 93, Sept. 10, 1988, p. 10225-10235. Research supported by the University
Mathematics
Logic
24
Basalt, Igneous Rocks, Mars Surface, Planetary Crusts, Planetary Evolution, Planetary Gravitation, Gravity Anomalies, Mars Volcanoes, Planetary Mantles
Scientific paper
A quantitative petrologic model for the evolution of the Tharsis region on Mars is presented, which is consistent with global gravity and topography data. It is demonstrated that it is possible to form and support the topographic relief of the Tharsis plateau by a closed-system mass-conservative nearly isostatic process involving generation of magmas from a mantle source region. Extrusion and/or intrusion (or underplating) of such magmas allows low-pressure solidification, with a consequent increase in volume relative to that which would be possible in the high-pressure source region, leading to elevated topology. The distribution of densities with depth obtained by the model is quantitatively consistent with the isostatic models of Sleep and Phillips (1979, 1985).
Banerdt Bruce W.
Finnerty A. A.
Phillips James R.
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