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GL4 E1 KI 3c

GL4 E1 KI 3c. Textural changes: FOLIATED AND NON-FOLIATED See KI 3 b. Textural changes. From random orientation to alignment Recrystallisation. MYLONITE. Foliated Shearing and dislocation processes powder the rock and align it to the movement directions Often forms slickensides.

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GL4 E1 KI 3c

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  1. GL4 E1 KI 3c • Textural changes: • FOLIATED AND NON-FOLIATED • See KI 3 b

  2. Textural changes • From random orientation to alignment • Recrystallisation

  3. MYLONITE • Foliated • Shearing and dislocation processes powder the rock and align it to the movement directions • Often forms slickensides

  4. MYLONITE Folded mylonite Credit: British Geological Survey Photomicrograph of mylonite (XPL) Credit: British Geological Survey

  5. MIGMATITE • Very coarse gneiss • Look similar to granite • Bands of quartz-feldspar granitic material and mafic material (biotite and hornblende) • Highest metamorphic grades • Partial melting • Plastic stage  flow folds (ptygmatic folds)

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