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Swiss Journal of Geosciences
Fig. 4 | Swiss Journal of Geosciences

Fig. 4

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

Fig. 4

Allanite in samples from Malone Valley. Blueschist AV16-44: a, b Thin section BSE images of allanite (Aln) associated to glaucophane (Gln) and epidote (Ep). c, d BSE images of allanite (Aln) in a grain mount. e Tera-Wasserburg plot for LA-ICP-MS U–Pb allanite analyses. Data-point error ellipses are 2σ. Micaschist AV16-45: f–h Thin section BSE images of allanite (Aln) associated to phengite (Ph) in the main foliation. Garnet (Grt) and quartz (Qz) are part of the HP mineral assemblage; albite (Ab) is retrograde. i Tera-Wasserburg plot for LA-ICP-MS U–Pb allanite analyses. Data-point error ellipses are 2σ

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