Proposed Title 1: - Queen's University

(1) the ca. 2.4-2.3 Ga Arrowsmith Orogen (Berman et al., 2005; Hartlaub et al., 2007;
Ashton and Hartlaub, 2008), interpreted as an extensional orogen associated with the
deposition of the Murmac Bay Group and the intrusion of the North Shore Plutons.
(2) the ca. 1.99-1.93 Ga Thelon-Taltson Orogen (McDonough et al., 2000; McNicoll et al.,
2000) produced NNE-directed recumbent folds (D 1/2 ) accompanied by ductile
transposition and superseded by upright NNW-trending folds (D 3 /F 3 ) (Bethune et al.,
2010). The deformation attained granulite-facies metamorphic conditions by ca. 1.93
Ga (Ashton et al., 2006, 2007). The Thluicho Lake Group (Hunter, 2007), a
greenschist-facies conglomerate-arkose-argillite succession basin located west of the
Beaverlodge area, was deposited between ca. 1.92 Ga and 1.82 Ga (Ashton et al.,
2009a) during the post-peak Taltson-Thelon Orogen.
(3) the ca. 1.91-1.90 Ga Snowbird Tectonic Zone (Baldwin et al., 2003; Bethune et al.,
2008; Ashton et al., 2009a) refolded D 1 to D 3 structures forming NE-trending,
predominantly SW-plunging F 4 folds (Ashton et al., 2007).
(4) the ca. 1.9-1.8 Ga east-west compressional regime of the Trans-Hudson Orogen formed
gentle, open north-trending folds (F 5 ) that are transected by a set northeast-trending
brittle fractures (Ashton et al., 2006, 2009b).
1.1.2. Uranium mineralization
The Beaverlodge area hosts numerous U deposits that are spatially associated with
the Martin Lake Basin (Fig. 1.1). These deposits were actively mined between 1953 and
1963. Ore grades were in the range of 0.15% U to 0.25% U but in places, up to 0.4% U
(Robinson, 1955). About 28,500 t U 3 O 8 was mined (Table 1.1; Sibbald and Quirt, 1987),
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