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Structures developed in fault gouge during stable sliding and stick-slip

Tectonophysics

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, , , and

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Abstract

We carried out a detailed study of the structural changes that occurred in a thin layer of quartz gouge sheared between saw cuts in granite cylinders at pressures of 2 and 4.7 kbar. At low pressure the material deformed stably, but at high pressure deformation was unstable. During deformation shear zones were developed oblique and parallel to the plane of the saw cuts. Our results suggest that shearing oblique to the strike of the fault zone precedes sudden slip, which is confined to the margin between the intact rock and gouge. If this is true in the natural situation, then it may be possible by studying the spacial distribution of the microseismic activity and creep in shear zones to determine whether sudden slip is imminent. ?? 1978.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Structures developed in fault gouge during stable sliding and stick-slip
Series title:
Tectonophysics
Volume
44
Issue:
1-4
Year Published:
1978
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Tectonophysics
First page:
161
Last page:
171