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Table 10 Definition of the ERV and calculation of the EBC of the garnet-bearing gneiss (ZR4)

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)

Microdomain vs. Thin Section Garnet Normalization           
Garnet Selection Pixels %           
Garnet domain 16,105 6.44           
Garnet 2–3 domain 7710 3.08           
Garnet thin section domain 7492 8.56           
Garnet 2–3 in thin section 3586 4.10           
Amount to be used 4.10           
Mineral average composition New Modal  % Na2O TiO2 MnO K2O MgO SiO2 Fe2O3 FeO CaO Al2O3 H2O Total
Wm 33.36 0.13 0.20 0.10 10.71 2.86 51.16 0.00 4.19 0.15 25.65 4.84 100.00
Grt2-Grt3 4.29 0.02 0.08 3.11 0.02 0.56 37.56 0.69 26.71 10.60 20.66 0.00 99.99
Cpx 32.06 14.15 0.03 0.02 0.04 0.39 59.19 1.30 1.33 1.01 22.53 0.00 100.00
Qtz 23.82 0.00 0.00 0.00 0.00 0.00 100.00 0.00 0.00 0.00 0.00 0.00 100.00
Ep 0.37 0.01 0.06 0.07 0.03 0.02 38.61 0.38 8.32 23.09 27.12 2.29 100.00
Ttn 5.66 0.03 38.18 0.02 0.15 0.01 30.86 0.00 0.38 28.00 2.35 0.00 100.00
Am 0.45 7.33 0.03 0.08 0.03 5.54 56.51 0.47 16.27 0.36 11.21 1.95 99.80
EBC 100.00 4.61 2.24 0.17 3.59 1.13 63.61 0.45 3.10 2.50 16.95 1.63 100.00
EBC normalized with no H2O 100.00 4.69 2.28 0.18 3.65 1.15 64.67 0.46 3.15 2.54 17.23 0.00 100.00