Mathematics – Logic
Scientific paper
Jun 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988em%26p...41..201r&link_type=abstract
Earth, Moon, and Planets (ISSN 0167-9295), vol. 41, June 1988, p. 201-216. Research supported by the Naional Research Council.
Mathematics
Logic
1
Mars Volcanoes, Planetary Mantles, Planetary Structure, Tectonics, Geological Faults, Magma, Planetary Crusts
Scientific paper
The concept of block tectonics provides a framework for understanding many aspects of Tharsis and adjoining structures. This Tharsis block tectonics on Mars is manifested partly by mantle-related doming and partly by response to loading by subsequent volcanic construction. Although the origin of the volcanism from beneath Tharsis is a subject of controversy explanations have to include inhomogeneities in Martian internal structure, energy distribution, magma accumulation and motion below the lithosphere. Thermal convection can be seen as a necessary consequence for transient initial phase of Martian cooling. This produced part of the elevated topography with tensional stresses and graben systems radial to the main bulge. The linear grabens, radial to the Tharsis center, can be interpreted to indicate rift zones that define the crustal block boundaries. The load-induced stresses may then have contributed on further graben and ridge formation over an extended period of time.
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