Gravity studies of the Tharsis area on Mars

Details Gravity studies of the Tharsis area on Mars Gravity studies of the Tharsis area on Mars

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991em%26p...53..217j&link_type=abstract

Earth, Moon, and Planets (ISSN 0167-9295), vol. 53, June 1991, p. 217-232. Research sponsored by DFG.

Physics

11

Gravity Anomalies, Mars Surface, Mars Volcanoes, Planetary Gravitation, Planetary Structure, Satellite Observation, Tectonics, Topography, Viking Orbiter 2

Scientific paper

Density-depth models are presented for three volcanoes on the Tharsis Planitia on Mars, including Arsia Mons, Pavonis Mons, and Ascraeus Mons, as well as for Alba Patera mountain. The results, presented as a tectonic sketch map, disclose a certain heterogeneity of the whole Tharsis Planitia. The central and eastern parts of this rise are characterized by extensional features and a mass deficit; the western part is dominated by many volcanic features and a central elongated mass deficit; while the northern part consists of Alba Patera, the substructure of which can be described by a diapir. These results imply that the Tharsis rise could not have originated from one stationary large axisymmetric plume or hot spot, but, rather, one or more hot spots which evolved in space and time.

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