Dike intrusions beneath grabens south of Arsia Mons, Mars

Details Dike intrusions beneath grabens south of Arsia Mons, Mars Dike intrusions beneath grabens south of Arsia Mons, Mars

Mar 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3205201g&link_type=abstract

Geophysical Research Letters, Volume 32, Issue 5, CiteID L05201

Physics

2

Planetary Sciences: Solid Surface Planets: Tectonics (8149), Planetary Sciences: Solid Surface Planets: Volcanism (6063, 8148, 8450), Planetary Sciences: Solar System Objects: Mars, Structural Geology: Fractures And Faults

Scientific paper

The existence of igneous dikes beneath grabens in Tharsis remains contentious due to conflicting observations of Martian geomorphology. We examine the topographic signatures of a Tharsis-radial graben array in 3 zones south of Arsia Mons. We identify dikes beneath grabens in all of the zones, with fewer dike-induced grabens closer to Arsia Mons. We infer that a single radial swarm of dikes outside the magmatic source area, central Tharsis, is unlikely. Our observations instead favor a long and varied magmatic history throughout Tharsis with several episodes of dike injection.

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