Abstract: Marble, calc-silicate rock and pelitic layers of the Ram Creek assemblage surrounding the Dan Zn (± Cu-Pb-Ag) occurrence display ample evidence of a monocyclic structural evolution with three main events of progressive deformation (D1-D3). These events developed a tightly folded package of west-northwest-trending tectonites. Primary planar structures (S0) generally lie sub-parallel to two tectonic foliations (S1 and S2), which dip shallowly to steeply southwest. Inter-foliation slip (D3) resulted in a transverse, sub-vertical foliation (S3) that dips generally shallowly to moderately north. Cross-sections based on new mapping and fold analysis indicate that similar folds containing stratabound zinc-sulphide mineralization should be present south of the Dan occurrence, as part of regional north-northeast-verging folds or a thrust-fault-repeated succession.

Authors: D'el-Rey Silva, L.J.H., Liverton, T., Paradis, S., and Roots, C.

Keywords: deposit models, Structural Geology

NTS Mapsheet(s): 105B

Citation: D'el-Rey Silva, L.J.H., Liverton, T., Paradis, S., and Roots, C., 2001. A structural analysis of the upper Swift River area (105 B/3), Yukon, Part I: Dan Zn occurrence and implications for sulphide mineralization. In: Yukon Exploration and Geology 2000, Emond, D.S. and Weston, L.W. (eds.), Exploration and Geological Sciences Division, Yukon Region, Indian and Northern Affairs Canada, p. 289-300.

Downloads

Name	Comment
Report	File is 1.84 MB	Download PDF