Reconciliation of stress and structural histories of the Tharsis region of Mars

Details Reconciliation of stress and structural histories of the Tharsis region of Mars Reconciliation of stress and structural histories of the Tharsis region of Mars

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....9615617t&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 96, Aug. 25, 1991, p. 15,617-15,633. Research supported by NASA.

Mathematics

Logic

100

Lithosphere, Mars Surface, Planetary Crusts, Stratigraphy, Structural Properties (Geology), Geological Faults, Mars Craters, Mars Volcanoes, Tectonics

Scientific paper

New information is presented on the structural and stratigraphic evolution of the Tharsis region of Mars, along with a lithospheric deformation model that can account for the observations. According to this model, the lithosphere beneath Tharsis consists of a thin elastic crustal cap on the rise, which is mechanically detached from the strong upper mantle by a volcanically thickened, hot, weak lower crust; these layers merge into a single cooler strong lithospheric layer around the edges of the rise. It is suggested that the nonuniform distribution of tectonic features and strain around Tharsis is due to the concentration of regional stresses near weaker volcanotectonic centers.

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