The effect of the basal-prism mechanism switch on fabric development during plastic deformation of quartzite |
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| Authors: | GS Lister |
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| Institution: | Department of Structural and Applied Geology, Institute for Earth Sciences, University of Utrecht, Uithof, Utrecht, The Netherlands |
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| Abstract: | Blacic described a transition from basal 〈a〉 to prism 〈c〉 dislocation glide systems as temperature increased or strain-rate decreased in sequences of experiments involving deformation of single crystals of quartz. In this paper theoretical aspects of competition between these systems during plastic deformation are discussed. It is concluded that the basal-prism mechanism switch should have important consequences for the development of crystallographic fabrics during plastic deformation of quartzite, and the Taylor-Bishop-Hill analysis is used in an attempt to predict expected fabric transitions. |
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