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Stress in a stratified crust overlying a buried screw dislocation
Author(s) -
Leary Peter C.
Publication year - 1985
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl012i001p00029
Subject(s) - crust , geology , rigidity (electromagnetism) , stress field , dislocation , tectonics , continental crust , stress (linguistics) , seismology , geophysics , materials science , condensed matter physics , physics , finite element method , linguistics , philosophy , composite material , thermodynamics
A Haskell matrix solution to the equation of stress equilibrium is used to describe the crustal response to a screw dislocation source lying beneath a uniform elastic crust capped by a region of layered rigidity. The solution is used to illustrate the effect a stratified crustal rigidity has on the near surface in situ stress field. Without accounting for this effect, it is possible to overestimate the deep tectonic stress levels inferred from in situ vertical gradients measured in the uppermost crust.