[en] This technical report documents the results of the acquisition, processing and interpretation of high resolution airborne geophysical data conducted as part of the Phase 2 Geoscientific Preliminary Assessment, to further assess the suitability of the Manitouwadge area to safely host a deep geological repository (SRK, 2017b). This study followed the successful completion of a Phase 1 Geoscientific Desktop Preliminary Assessment (AECOM, 2014). The desktop study identified 4 potentially suitable areas warranting further studies such as high-resolution surveys and geological mapping; two located within the south central portion of the Black-Pic batholith, one in the Quetico metasedimentary rocks north of Manitouwadge, and one in the Fourbay Lake pluton in the southwest of the Manitouwadge area. The purpose of the Phase 2 acquisition, processing and interpretation of geophysical data was to provide an updated interpretation of the geological characteristics of the potentially suitable bedrock unit identified in Phase 1 and to provide additional information to further assess the geology of the Manitouwadge area. Both magnetic and gravimetric data were acquired during the surveys in order to provide data to interpret the geometry and thickness of the potentially suitable bedrock units; the nature of geological contacts; bedrock lithologies; the degree of geological heterogeneities and the nature of intrusive phases within the plutons in the area; as well as the nature of structural features such as faults, shears zones, and alteration zones. The grids of the acquired magnetic and gravimetric data and associated processed grids (first, second and horizontal derivatives, total gradient amplitude, trend analysis solutions and tilt angle) were analyzed and interpreted together with the mapped bedrock geology and other available geological information (e.g. magnetic susceptibility and rock density). The survey allowed for a characterization of the distinctive local gravity and magnetic signatures of the Black-Pic batholith and its encapsulated plutons and metavolcanic units, as well as the Quetico metasedimentary rocks north of the subprovince boundary. The Black-Pic batholith shows subtle internal variations in magnetic character with regions showing magnetic foliations and internal magnetic fabric highlighting either lithological heterogeneity or steeply dipping gneissic layering likely related to large-scale fold structures throughout the Black-Pic batholith. Three large gravity lows within the Black-Pic batholith have been interpreted to either represent the deepest portion of the batholith or local alternate phase of emplacement with a slightly lower density. The Fourbay Lake pluton is characterized as a prominent magnetic anomaly with a subtle gravity high. The Quetico metasedimentary rocks are weakly magnetic with an east-west trending magnetic fabric and a strong local gravity high anomaly both associated with the subprovince boundary. The Black-Pic batholith and the Quetico metasedimentary rocks have been cross-cut by at least three independent dyke swarms of both positive and negative magnetic polarity. Preliminary forward modelling was completed on three profile lines covering the principle features of the Black-Pic batholith, Fourbay Lake pluton, and Quetico metasedimentary rocks and surrounding intrusions and greenstone belts within the study area. The Black-Pic batholith has been modelled as extending to a considerable depth with the encapsulated greenstone belts extending to 2.5 km and the Fourbay Lake pluton to 1 km. Rocks of the Quetico Subprovince have locally been modelled extending to depths typically greater than 6.5 km. (author)