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Fault spacing in continental strike-slip shear zones

Yang, Haibin; Moresi, Louis; Quigley, Mark


Strike-slip shear zones with sub-parallel arrays of evenly-spaced faults are widely observed in nature, but the controls on the spacing between major faults are unclear. We analyze a 2-D model and develop a scaling law relating the fault spacing to structural and rheological parameters in the continental crust. We find that fault spacing positively correlates with brittle-layer thickness, viscous lower crust thickness, and strength contrast between active faults and surrounding intact blocks;...[Show more]

CollectionsANU Research Publications
Date published: 2020-01-15
Type: Journal article
Source: Earth and Planetary Science Letters
DOI: 10.1016/j.epsl.2019.115906


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