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Fig. 3 | Swiss Journal of Geosciences

Fig. 3

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

Fig. 3

Zircon in metasediments from Malone Valley. Blueschist AV16-44: ad CC images of the analysed zircon grains. Scale bar in all images is 30 μm. Measured spots are shown (yellow circles) with the associated date (± 1σ Ma). e Concordia plot of zircon rim dates and weighted average 206Pb/238U age. The green circle represents the calculated Concordia age. Micaschist AV16-45: fi Selected CC images of analysed zircon grains. Scale bar in all images is 30 μm. Measured spots are shown (yellow circles) with the associated date (± 1σ Ma). j REE patterns of zircon rims. k Concordia plot of zircon rim dates and weighted average 206Pb/238U age. The green circle represents the calculated Concordia age. Lws-micaschist AV16-51: lo Selected CC images of analysed zircon grains. Scale bar in all images is 30 μm. Measured spots are shown (yellow circles) with the associated date (± 1σ, Ma). p REE patterns of zircon rims. q Concordia plot of zircon rim dates and weighted average 206Pb/238U age. The green circle represents the calculated Concordia age

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