Table 1 Petrography and structural characteristics of samples
Sample no. | Coordinates WGS-84 | Lithology | Mineral assemblage | Microscopic structures | DT (°C)” | |
|---|---|---|---|---|---|---|
SK1 | N 46°25.8’ | E 15°32.4’ | Augengneiss | Augen (25%): Kfs + Qtz; 1–1.5 mm. Matrix(75%): Qtz + Pl + Kfs + Bi; Ms<2% with a size of 0.05–0.5 mm | Qtz: fine-grained, undulatory extinction, deformation bands, BLG, SGR; Kfs: BLG, deformation twins; Pl: micro-fractures; Bi: oriented. Stretching lineation, augen structure. | ± 500 |
SK2 | N 46°25.7’ | E 15°32.4’ | Augengneiss | Augen (20%): Kfs + Qtz; 0.5–1 mm. Matrix(80%): Qtz + Pl + Kfs + Bi; Ms<2%¸ grain-size: 0.05–0.5 mm | Qtz: monocrystals elongated, partly undulatory extinction; Fsp: elongated, BLG; Pl: deformation twins; Bi: oriented. Stretching lineation, augen structure. | ± 500 |
SK10 | N 46°25.1’ | E 15°31.3’ | Leucogneiss | Qtz: 25%; Pl: 25%; Kfs: 30%; Ms: 8%; Grt: 5%. | Qtz: fine-grained, SGR; Kfs: micro-fractures Pl: albite twins; Ms: oriented; garnet: core-rim structure | ± 600 |
SK12 | N 46°25.1’ | E 15°29.0’ | Leucogneiss | Qtz:30%; Pl:20%; Kfs:25%; Ms: 10%, Grt: 3%, Bi: < 3% | Qtz: fine grained, weakly elongated, SGR, GBM; Kfs: micro-fractures; myrmekitic texture in Kfs grains | ± 600 |