Recent U-Pb age determinations and P-T estimates allow us to characterize the different levels of a formerly thickened crust, and provide further constraints on the make up and tectono-thermal evolution of the Grenville Province in the Manicouagan area. An important tectonic element, the Manicouagan Imbricate zone (MIZ), consists of mainly 1.65, 1.48 and 1.17Ga igneous rocks metamorphosed under 1400-1800MPa and 800-900 o C at ~1.05-1.03Ga, during the Ottawan episode of the Grenvillian orogenic cycle, coevally with intrusion of gabbro dykes in shear zones. The MIZ has been interpreted as representing thermally weakened deep levels of thickened crust extruded towards the NW over a parautochthonous crustal-scale ramp. Mantle-derived melts are considered as in part responsible for the high metamorphic temperatures that were registered.New data show that mid-crustal levels structurally above the MIZ are represented by the Gabriel Complex of the Berthe terrane, that consists of migmatite with boudins of 1136+/-15Ma gabbro and rafts of anatectic metapelite with an inherited monazite age at 1478+/-30Ma. These rocks were metamorphosed at about the same time as the MIZ (metamorphic zircon in gabbro: 1046+/-2Ma; single grains of monazite in anatectic metapelite: 1053+/-2Ma) and under the same T range (800-900 o C) but at lower P conditions (~1000-1100MPa). They are mainly exposed in an antiformal culmination above a high-strain zone, which has tectonic lenses of high P-T rocks from the MIZ and is intruded by synmetamorphic gabbroic rocks. This zone is interpreted as part of the hangingwall of the MIZ during extrusion. A gap of 400MPa in metamorphic pressures between the tectonic lenses and the country rocks, together with the broad similarity in metamorphic ages, are consistent with rapid tectonic transport of the high P-T rocks over a ramp prior to the incorporation of the mafic lenses in the hangingwall.Between the antiformal culmination of the Gabriel Complex and the MIZ 1.48Ga old granulites of the Hart Jaune terrane are exposed. They are intruded by unmetamorphosed 1228+/-3Ma gabbro sills and 1166+/-1Ma anorthosite. Hart Jaune Terrane represents relatively high crustal levels that truncate the MIZ-Gabriel Complex contact and are preserved in a synformal structure.Farther south, the Gabriel Complex is overlain by the Banded Complex, a composite unit including 1403+32/-25Ma granodiorite and 1238+16/-13-1202+40/-25Ma granite. This unit has been metamorphosed under relatively low-P (~800MPa) granulite-facies conditions. Metamorphic U-Pb data, limited to zircon lower intercept ages (971+/-38Ma and 996+/-27Ma) and a titanite (990+/-5Ma) age, are interpreted to postdate the metamorphic peak.The general configuration of units along the section is consistent with extrusion of the MIZ during shortening and, finally, normal displacement along discrete shear zones.