Regional Geology
The Wedge Hills Properties are located within the Paleoproterozoic SECP, which in turn is situated in the northeastern Canadian Shield of Labrador and Québec (See Figure 3). The SECP formed through the oblique collisions of the Archean Nain and Superior cratons with a third Archean block, the Core Zone (Wardle et al, 2002). The belt has a tripartite structure, comprising the Torngat Orogen formed by Nain craton – Core Zone collision in the east, the Core Zone in the center, and the New Québec Orogen formed by Superior craton – Core Zone collision in the west. Principal stages of tectonic development include rifting of the Nain and Superior cratons (~ 2.2-2.1 Ga), collision of the Nain craton and Core Zone (~1.87-1.85 Ga) and collision of the Superior craton – core zone (~1.82-1.77 Ga).
The Core Zone is a wide expanse of tonalitic to granitic gneiss that yields a variety of U/Pb radiometric ages ranging from 2.7 to 2.6 Ga, with some 3.0 Ga ages present in the northeastern part of the zone. Migmatitic fabrics appear to be of Archean age, but have been recrystallized in a Paleoproterozoic metamorphism that rises from amphibolite facies in the western and central areas to granulite facies adjacent to Torngat Orogen.
The Core Zone can be subdivided into several lithotectonic domains separated by major shear zones. The northern part of the Core Zone is formed in part by the Paleoproterozoic Lake Harbour Group (politic gneiss, quartzite and marble), metamorphosed to the amphibolite facies. The southeastern part of the Core Zone contains high grade, plutonic and volcanic sequences. The western border of the zone is composed of the De Pas and Kuujjuaq batholiths (1.81 to 1.84 Ga) and the Kuujjuaq terrane formed of supracrustal rocks and tonalitic / granitic gneisses. The eastern part is subdivided into several domains, composed largely of granulites (North River, Lac Henrietta, Anaktalik, Tasisuak and Conrad Brook domains). The center of the Core Zone is represented by the Wedge Hills Domain, which consists of mafic and intermediate volcanic and intrusive rocks, ultramafic rocks, volcaniclastic rocks, paragneiss and leucogranite intrusions. In the southeastern part of the Core Zone lies the Mistinibi-Raude Domain (migmatitic paragneiss, granite and mafic to ultramafic rocks), and the volcano-sedimentary Ntshuku Complex (2.3-1.94 Ga) of calc-alkaline affinity. To the east, Paleoproterozoic and Mesoproterozoic plutonic suites intrude the Core Zone (anorthositic rocks of the Michikamau intrusive Suite, plus granites and adamellites of the Mistastin Complex.
Figure 4 Regional Magnetic Map The southeastern part of the Core Zone contains a sequence of plutonic and volcanic rocks (2.3-1.94 Ga), which exhibit signs of 1.94 Ga high grade metamorphic event. These rocks have calc-alkalic affinities. Potential magmatic arc rocks are represented by the 1.84-1.81 Ga De Pas and Kuujjuaq batholiths located along the western side of the Core Zone. The eastern margin of the Core Zone is marked by the Lac Lorimer complex and high strain zones associated with the sinistral Abloviak, Falcoz and Mistastin River shear zones. The western boundary of the Core Zone is marked by the Lac Tudor shear zone, a dextral transpressive structure with a significant component of westerly overthrust motion. The central Core Zone is traversed by the George River shear which has a dextral sense of movement associated with down throw to the east.
Figure 5 Regional Lake Sediment Sample Results The regional magnetic pattern covering the eight properties is presented in Figure 4. The overall regional pattern trends north-northwest and closures probably reflect large-scale folds. Breaks in the linear patterns mark the location of major fault and shear zones.
In general positive magnetic features relate to various granodiorite intrusions and other granitic intrusions containing paragneiss inclusions.
The Core Zone is a wide expanse of tonalitic to granitic gneiss that yields a variety of U/Pb radiometric ages ranging from 2.7 to 2.6 Ga, with some 3.0 Ga ages present in the northeastern part of the zone. Migmatitic fabrics appear to be of Archean age, but have been recrystallized in a Paleoproterozoic metamorphism that rises from amphibolite facies in the western and central areas to granulite facies adjacent to Torngat Orogen. 
The southeastern part of the Core Zone contains a sequence of plutonic and volcanic rocks (2.3-1.94 Ga), which exhibit signs of 1.94 Ga high grade metamorphic event. These rocks have calc-alkalic affinities. Potential magmatic arc rocks are represented by the 1.84-1.81 Ga De Pas and Kuujjuaq batholiths located along the western side of the Core Zone. The eastern margin of the Core Zone is marked by the Lac Lorimer complex and high strain zones associated with the sinistral Abloviak, Falcoz and Mistastin River shear zones. The western boundary of the Core Zone is marked by the Lac Tudor shear zone, a dextral transpressive structure with a significant component of westerly overthrust motion. The central Core Zone is traversed by the George River shear which has a dextral sense of movement associated with down throw to the east. 
The regional magnetic pattern covering the eight properties is presented in Figure 4. The overall regional pattern trends north-northwest and closures probably reflect large-scale folds. Breaks in the linear patterns mark the location of major fault and shear zones. 
