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