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Leucocratic, Opx-bearing porphyritic granite sheared under amphibolite-facies conditions. Asymmetric mantled K-feldspar porphyroclasts indicate sinistral shear sense.
PhotoID440

Leucocratic, Opx-bearing porphyritic granite sheared under amphibolite-facies conditions. Asymmetric mantled K-feldspar porphyroclasts indicate sinistral shear sense.
PhotoID440

Photograph: Ivan Zibra

Reference: Reference: Zibra I, Kruhl JH, Braga R (2010). Late Palaeozoic deformation of post Variscan lower crust: shear zone widening due to strain localization during retrograde shearing. Int J Earth Sci (Geol Rundsch) DOI 10.1007/s00531-009-0441-5

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