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Boudinaged pegmatoid Opx-bearing
tonalite, previously injected into the host melagabbro. Boudin neck is
locally filled by undeformed leucotonalite, interpreted
PhotoID441
to have been a melt. Note the severe stretching recorded by Opx
porphyroclasts adjacent to the vein boundaries.

Boudinaged pegmatoid Opx-bearing
tonalite, previously injected into the host melagabbro. Boudin neck is
locally filled by undeformed leucotonalite, interpreted
PhotoID441
to have been a melt. Note the severe stretching recorded by Opx
porphyroclasts adjacent to the vein boundaries.

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