Table 2 Metamorphism of the studied units (from west to east) after Gidon et al. (1994) and Michard et al. (2004)
Tectonic Units | Gidon et al. (1994) | Michard et al. (2004) | ||||
|---|---|---|---|---|---|---|
Metamorphic facies | P–T estimate | Mineral assemblages | Metamorphic facies | P–T estimate | Mineral assemblages | |
Sérenne-Guillestre | Anchizone | T < 300 °C | Ilt | Chl-Pumpellyite | – | Chl, Ms, Qz |
Châtelet and Brec | Low-grade greenschist | T 300 °C, P = 1–3 kbar | Ms, Chl | Low-grade greenschist | – | Chl, Ms, Qz |
Aiguille de Chambeyron-Sautron | Low-grade greenschist | T 300 °C, P = 1–3 kbar | Ms, Chl | Low-grade greenschist | T = 310 °C, P = 6 kbar | Ph, Ab, Qz |
Marinet | Low-grade, intermediate-pressure metamorphism | T 300 °C, P = 3–6 kbar | Lws, Ph, Pg, Car | High pressure greenschist | T = 330 °C, P = 7 kbar | Ph, Chl, Ab, Qz |
Aiguilles de Mary s.l | Low-grade, intermediate-pressure metamorphism | T 300 °C, P = 3–6 kbar | Lws, Ph, Pg, Car | Low grade blueschist | – | Lws, Ch, Ab, Ep |
Ceillac–Chiappera | Blueschist lacking significant overprint in greenschist | T = 300–350 °C, P = 8–12 kbar | Car, Lws, Arg | Blueschist lacking significant overprint in greenschist | T < 350 °C, P = 10 kbar | Car, Ph |
Roure | Blueschist partially overprinted by intermediate grade greenschist | T = 300–350 °C, P = 8–12 kbar | Car, Chl, Pg; Ph | Blueschist lacking significant overprint in greenschist | T < 350 °C, P = 11 kbar | Car, Ph |
Combe–Brémond | Blueschist partially overprinted by intermediate grade greenschist | T = 300–350 °C, P = 8–12 kbar | Car, Chl, Pg; Ph | Blueschist partially overprinted by intermediate grade greenschist | T < 350 °C, P = 11 kbar | Car, Ph |
Schistes lustrés (La Blave) | Blueschist partially overprinted by intermediate grade greenschist | T = 300–350 °C, P = 8–12 kbar | Gln, Lws, Phe, Jd | Blueschist to high-grade blueschist, partially overprinted by greenschist facies | T = 370 °C. P = 13 kbar | Gln, Lws, Car |