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Fig. 8 | Swiss Journal of Geosciences

Fig. 8

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

Fig. 8

Allanite in samples from Ivozio Complex. Blueschist AV16-53: ad Thin section BSE images of zoned allanite (Aln) with a zoisite rim (Zo), associated to glaucophane (Gln) and, to a minor extent, to garnet (Grt) and phengite (Ph). Zircon (Zrn) < 10 μm in size are present. Yellow circles represent analysed spots. e Tera-Wasserburg plot for LA-ICP-MS U–Pb allanite analyses. Data-point error ellipses are 2σ. Eclogite AV16-57: fh Thin section BSE images of zoned allanite (Aln) associated to glaucophane (Gln) and phengite (Ph). Garnet (Grt) is fractured and partially resorbed. Quartz (Qz) and μm-size zircons (Zrn) are also present. Yellow circles represent analysed spots. i Tera-Wasserburg plot for LA-ICP-MS U–Pb allanite analyses. Data-point error ellipses are 2σ

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