Deciphering cryptic P-T-d-t histories in the western Thor-Odin dome, Monashee Mountains, Canadian Cordillera: A key to unravelling pre-Cordilleran tectonic signatures

► Diffuse partial melting in the lower crust does not obliterate earlier events. ► Pre-migmatic grain scale fabrics and foliations manifest fossil mineral equilibria. ► Mappable deformation histories drive sampling of metamorphic re-equilibration steps. ► Quality P-T-relative time of deformation paths (PTdt) are coherently derived. ► Rodinia break-up, subduction and exhumation signatures are inferred in Thor-Odin dome.