Mechanics of graben formation in crustal rocks - A finite element analysis

Details Mechanics of graben formation in crustal rocks - A finite element analysis Mechanics of graben formation in crustal rocks - A finite element analysis

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....9413961m&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 94, Oct. 10, 1989, p. 13961-13973.

Mathematics

Logic

99

Finite Element Method, Geological Faults, Planetary Crusts, Planetary Surfaces, Rocks, Satellite Surfaces, Icy Satellites, Lithosphere, Plates (Tectonics)

Scientific paper

The mechanics of the initial stages of graben formation are examined, showing that the configuration of a graben (a pair of antithetically dipping normal faults) is the most energetically favorable fault configuration in elastic-brittle rocks subjected to pure extension. The stress field in the vicinity of a single initial normal fault is computed with a two-dimensional FEM. It is concluded that the major factor controlling graben width is the depth of the initial fault.

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