Abstract

This paper describes quartz ribbons parallel to foliation, containing elongate recrystallized quartz grains aligned oblique to the foliation within a mylonite of the southern Tasman Belt, southeastern Australia. The shape fabric of quartz grains varies in obliquity (with respect to the foliation) and intensity (grain aspect ratio) from one ribbon to another, whereas the c-axis fabric pattern is stable with respect to the mylonitic foliation and lineation. It is argued that the grain shape fabric is an oscillating foliation due to competition between deformation and syntectonic recrystallization.

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