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Fig. 3

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BSE images of monazite grains from the VP7-2 paragneiss. Circles indicate the location of the LA-ICPMS pits (7 µm diameter) and their corresponding 206Pb/238U dates (2σ level). Only consistent dates in both the 208Pb/232Th–206Pb/238U and 206Pb/238U–207Pb/235U systems are shown. (a) and (b) Monazite I grain in pseudomorph after plagioclase (ps Pl) with its reaction corona composed of apatite (Ap), zoisite (Zo) and monazite II (Mnz II); (c) and (d) similar coronas in which monazite I has been completely consumed; (e) pristine monazite I included in quartz (Qz); (f) pristine monazite (Mnz I) in pseudomorph after cordierite (ps Crd), consisting of Grt II, cryptocrystalline kyanite and quartz; (g) pristine monazite (Mnz I) included in Grt I. Kln = kaolinite.

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