Mathematics – Logic
Scientific paper
Dec 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980icar...44..745m&link_type=abstract
Icarus, vol. 44, Dec. 1980, p. 745-751.
Mathematics
Logic
69
Geological Faults, Mars (Planet), Planetology, Tectonics, Lithosphere, Shear Stress, Volcanoes
Scientific paper
Both geological and free-air-gravity data suggest that the positive mass anomaly associated with the Tharsis volcanoes may have reoriented Mars' lithosphere by as much as 25 deg. Since Mars is oblate, rotation of the lithosphere over the equatorial bulge by 25 deg produces membrane stresses of several kilobars, large enough to initiate faulting. Plots of the magnitude and direction of stresses in a reoriented planet show that near Tharsis the dominant fault type should be north-south-trending normal faults. This normal fault province is centered at 30 deg N latitude and extends about 45 deg east and west in longitude. Similar faults should occur at the antipodes, north of Hellas Planitia.
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