Caldera subsidence and magma chamber depth of the Olympus Mons volcano, Mars

Details Caldera subsidence and magma chamber depth of the Olympus Mons volcano, Mars Caldera subsidence and magma chamber depth of the Olympus Mons volcano, Mars

Nov 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....9718295z&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 97, no. E11, p. 18,295-18,307.

Physics

30

Calderas, Magma, Mars Surface, Mars Volcanoes, Topography, Finite Element Method, Stress Distribution, Tectonics

Scientific paper

An axisymmetric finite element model is constructed to calculate elastic stresses in a volcanic edifice to examine the relationship between surface tectonism, caldera subsidence, and the physical characteristics of Olympus Mons' magmatic reservoir. Model results indicate that the surface stress state is not strongly sensitive to the aspect ratio or pressure distribution of the magma chamber, or to the contrast in stiffness between the magma chamber and surroundings, but is strongly dependent on the depth and width of the chamber. A gross similarity is suggested between the configurations of the magmatic plumbing systems of Olympus Mons and several well-studied terrestrial volcanoes such as the Hawaiian shields.

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