What happens when a Pan-African pegmatitic granite intrudes a mid-crustal shear zone in the middle of the construction of Gondwana?
Answer: one of two things:
Those would be augen formed from entrained feldspar crystals in the intruding magma, or,
Those would be rafts of mylonite floating in a granite.
2 comments:
oh, great photos! Thanks for sharing!
Holy crap, those are cool. My undergrad adviser would probably describe them as "seriously sexy".
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