Genesis of continental seismogenic zone and a new fault zone model
作者:Junlai Liu、M. Shimada
DOI:10.1007/bf02886300
日期:2000.10
Experiments were conducted repeatedly on Mannari granite under different temperature and confining pressure conditions. Systematic micro- and submicro-structural and mechanical analyses of granite samples deformed under 1.5 GPa (confining pressure), at 25 degreesC-650 degreesC temperatures and at 2x10(-6) s(-1) strain rate show the brittle-ductile deformation microstructures and microstructural associations similar to those observed in naturally deformed crustal rocks and minerals. Brittle fracturing and crystalline plasticity cc-exist and react with each other in the brittle-ductile transition domain of the continental lithosphere. The interaction between the different mechanisms in the transitional domain results in the variation of anomalous strength values, which may best explain the genesis of the continental seismogenic zone. A new fault zone model is proposed on the basis of detailed micromechanical and microstructural analyses.
Fieser et al., Journal of the American Chemical Society, 1948, vol. 70, p. 3212