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Table 1 List of the analysed samples. Mineral abbreviations are from Whitney and Evans (2010)

From: The evolution of the Sesia Zone (Western Alps) from Carboniferous to Cretaceous: insights from zircon and allanite geochronology

Sample Locationa Lithology Mineralogyb Peak P–T conditions
Malone Valley
 AV16-44 N 45° 21′ 29.64″
E 09° 31′ 03.00″
Blueschist Gln (50%) + Grt (20%) + Spn (10%) ± Ep ± Ph ± Aln ± Ap ± Cpx ± Chl (retrograde) ± Amp (retrograde) ± Zrn  ~ 1.7 GPa
500 °Cc
 AV16-45 N 45° 21′ 29.64″
E 09° 31′ 03.00″
Micaschist Qz (35%) + Ph (35%) + Grt (15%) + Pg (5%) ± Chl ± Ab ± Spn ± Aln ± Zrn  ~ 1.7 GPa
500 °Cc
 AV16-51 N 45° 21′ 29.64″
E 09° 31′ 03.00″
Lws-micaschist Qz (30%) + Wm (15%) + Chl (15%) + Czo (Lws pseudomorphs) (10%) + Grt (10%) + Gln (10%) + Spn (5%) ± Aln ± Zrn  ~ 1.7 GPa
500 °Cc
 AV16-47 N 45° 21′ 29.64″
E 09° 31′ 03.00″
Eclogite Matrix: Gln (50%) + Grt (20%) + Ep (15%) ± Ph ± Zo ± Ap ± Chl (retr.) ± Amp (retrograde) ± Ab (retrograde) ± Spn ± Zrn
Boudin core: Omp (90%) ± Spn ± Amp (retr.) ± Ab (retrograde)
Boudin rim: Ep (55%) + Spn (35%) ± Grt ± Zrn
 ~ 1.7 GPa
500 °Cc
Ivozio Complex
 AV16-21 N 45° 32′ 09″
E 07° 50′ 46″
Eclogite Domain 1: Grt (50%) + Omp (25%) + Gln (15%) ± Ph ± Rt ± Py
Domain 2: Qz (30%) + Grt (30%) + Ph (30%) ± Ep ± Rt
1.8–2.3 GPa
550–600 °Cd
 AV16-53 N 45° 32′ 10.20″
E 07° 50′ 46.44″
Blueschist Grt (50%) + Gln (40%) ± Cpx (relics) ± Rt ± Aln ± Ph ± Zo ± Qz ± opaques 1.8–2.3 GPa
550–600 °Cd
 AV16-57 N 45° 32′ 14.58″
E 07° 50′ 45.88″
Eclogite Omp (50%) + Grt (25%) + Gln (15%) + Ph (15%) + Chl (retrograde) ± Rt ± Aln ± opaques 1.8–2.3 GPa
550–600 °Cd
Chiusella Valley
 VC10-04 N 45° 33′ 03.70″
E 07° 43′ 43.20″
Mn-rich quartzite Qz (60%) + Grt (20%) + Gln (15%) ± Aln ± Zrn  ~ 1.8 GPa
550 °Ce
Monte Mucrone
 AV17-07 N 45° 37′ 52.98″
E 07° 56′ 23.58″
Micaschist Ph (35%) + Grt (35%) + Pg (15%) + Qz (5%) ± Rt ± Aln ± Zrn ± Chl ± Cpx (relics) ± opaques 1.3–1.5 GPa
500–600 °Cf
 AV17-16 N 45° 37′ 51.18″
E 07° 56′ 34.24″
Eclogite Matrix: Gln (30%) + Grt (25%) + Omp (20%) + Ph (10%) + Pg (5%) ± Rt ± Ap ± Zrn
Veins: Ph (40%) + Grt (30%) + Gln (20%) ± Rt ± Ep
1.3–1.5 GPa
500–600 °Cf
  1. aCoordinates refer to WGS84
  2. bModal % is based on visual estimation
  3. cPognante (1989a)
  4. dZucali et al. (2004); Zucali and Spalla (2011)
  5. eRegis et al. (2014)
  6. fZucali et al. (2002) and references therein