Table 8 Thermobarometric estimates obtained using independent thermometers and barometers and referred to successive metamorphic events (D1–M1 and D2–M2)
Method | Garnet-bearing gneiss | Orthogneiss | ||
|---|---|---|---|---|
Metamorphic event | D1–M1 | D2–M2 | D1–M1 | D2–M2 |
Green and Hellman (1982) | 470 ± 30 °C | 445 ± 40 °C | 480 ± 50 °C | 430 ± 50 °C |
Wu et al. (2002) | 507 ± 40 °C | 473 ± 50 °C | 490 ± 50 °C | 440 ± 50 °C |
XJd content in Cpx (Holland, 1980) (minimum pressure) | 1.25 ± 0.1 GPa | 1.26 ± 0.14 GPa | 1.04 ± 0.02 GPa | |
Massonne and Schreyer (1987) (minimum pressure) | 1.17 ± 0.2 GPa | 1.0 ± 0.1 GPa | 1.3 ± 0.16 GPa | 1.14 ± 0.12 GPa |
Mineral composition isopleth thermobarometry on PT pseudosection | 520 °C at 1.28 GPa | 490 °C at 1.04 GPa | 400 °C at 1.07 GPa | |