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Swiss Journal of Geosciences
Fig. 11 | Swiss Journal of Geosciences

Fig. 11

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. 11

Compositional variations of Grt (a, b), Wm (c, d) and Px (e, f) in orthogneiss (ZR19) with density of chemical compositions (grey areas) obtained from Q-XRMA mineral analysis. a, b Grt1 is Grs in composition (Grs > 75%). c, d Wm1 and Wm2 have phengite composition, although a small decrease in Si content can be detected for Wm2 (from 7 to about 6.7 a.p.f.u.). e, f XJd content in Jd1 is > 80% and in Jd2 is between 70 and 80%. Fe3 + content increases in Cpx1 with Aeg component of 40%

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