Abstract: Yukon-Tanana Terrane in the Livingstone Creek area comprises five successions of metasedimentary and metavolcanic rocks which range in age from pre-Upper Devonian to Lower Mississippian. They are correlated with Lower Mississippian and older strata in the Glenlyon and Finlayson Lake areas. Yukon-Tanana rocks are intruded by at least five plutonic suites, ranging in age from Late Devonian to Late Cretaceous. The structural style of the area is dominated by a transposition foliation which is axial planar to isoclinal folds of an earlier foliation. The transposition foliation is itself folded by northeast-verging open folds. The d'Abbadie fault zone, a 1-km-wide zone of imbricate fault slices in
the eastern part of the area, is characterized by multiple generations of ductile fabrics overprinted by younger cataclastic breccia zones. Deformation along d¿Abbadie fault is in part constrained by syn-tectonic emplacement of a ca. 96 Ma granite pluton along the western margin of the fault zone. Two new showings are reported here: a Pb-Ag vein occurrence and a pyrrhotite skarn. In addition, anomalous Cu-Zn values in graphitic phyllite associated with chloritic schist suggest potential for volcanogenic massive sulphide- (VMS) or hybrid VMS-sedimentary-exhalative-style mineralization in the area.

Authors: Colpron, M.

Keywords: Livingstone Creek, Structural Geology, VMS, Volcanogenic Massive Sulphide

NTS Mapsheet(s): 105E08

Citation: Colpron, M., 2006. Geology and mineral potential of Yukon-Tanana Terrane in the Livingstone Creek area (NTS 105E/8), south-central Yukon. In: Yukon Exploration and Geology 2005, Emond, D.S., Bradshaw, G.D., Lewis, L.L., and Weston, L.H. (eds.), Yukon Geological Survey, p. 93-107 .

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