Physics
Scientific paper
Nov 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30vpla2o&link_type=abstract
Geophysical Research Letters, Volume 30, Issue 22, pp. PLA 2-1, CiteID 2154, DOI 10.1029/2003GL018664
Physics
3
Structural Geology: Fractures And Faults, Structural Geology: Folds And Folding, Structural Geology: Local Crustal Structure, Tectonophysics: Planetary Tectonics (5475)
Scientific paper
Insight into the mechanical and thermal structure of the Martian lithosphere and the character of Tharsis-driven tectonics is gained from detailed mapping of the global distribution of thrust fault vergence directions with respect to the center of the Tharsis tectono-volcanic province. Our results reveal sub-equal frequencies of thrust faults that verge away from and toward Tharsis. Based on the observed distribution of thrust fault vergence directions, we conclude that the base of the Tharsis load was effectively welded, by frictional and cohesive strength, to the subjacent Noachian crust throughout its periods of sustained volcanism and faulting during the late Noachian to early Hesperian, rather than being detached along a ductile layer at its base.
Okubo Chris H.
Schultz Richard A.
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