P-T-time path recorded in the VP7 gneisses of Grezay (Les Essarts unit; based on Figure 16 of Godard, 2009). The age range between 510 and 480 Ma is interpreted as monazite I crystallisation and/or re-equilibration during the prograde phase and peak of the HT cycle (paragneiss samples VP7c and VP7-2). Granite emplacement is dated to about 496 Ma in sample VP7r. The HP eclogite-facies event is dated to about 395 Ma by monazite II from the VP7-2 paragneiss. The two BSE images correspond to monazite I included in garnet I of the VP7c paragneiss (Fig. 4a) and crystallized during the HT metamorphic cycle, and to monazite II from the reaction corona formed during the eclogite-facies HP metamorphism at the monazite I-plagioclase interface in the VP7-2 paragneiss (Mnz VP7-2-15; SM2).