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Fig. 7 | Swiss Journal of Geosciences

Fig. 7

From: Blueschist mylonitic zones accommodating syn-subduction exhumation of deeply buried continental crust: the example of the Rocca Canavese Thrust Sheets Unit (Sesia–Lanzo Zone, Italian Western Alps)

Fig. 7

Results of Q-XRMA second and third cycle for garnet-bearing gneiss (ZR4-C7 microdomain). a Back-Scattered Electron (BSE) image of Fig. 4d, rotated of 90 degree. b Result of second cycle showing Grt generations classification and mineral classification of X-ray map. Four generations for garnet can be detected. Grt1a is the porphyroclast, Grt1b rims Grt1a and fills microfractures within the Grt1a, Grt2 occurs at the rim of Grt1 and at the core of garnets syn-kinematic with the S2 mylonitic foliation and Grt3 is the corona of Grt2. The amount of pixels classified is 99.99%. Result of third cycle showing (c) jadeite (Jd) and aegirine (d) component (Ae) map for all Cpx of the X-ray map. Aeg exsolutions are very small and cannot be observed on the BSE image

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