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Fig. 8


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Photomicrographs illustrating the microstructures and the associated recrystallizations in the Aaraben shear zone (crossed polarized light). (a) asymmetric intrafolial microfold with muscovite developed in the main foliation plane. (b) muscovite flakes and asymmetric quartz ribbons developed parallel to the foliation. (c) sigmoidal muscovite and chlorite within a shear zone (d) sigmoidal quartz ribbons and muscovite developed at the expense of staurolite porphyroclast. Mineral abbreviations after Kretz (1983).

Photomicrographies illustrant les relations entre cristallisation métamorphique et déformation dans la zone de cisaillement d’Aaraben.

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