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Grant Abbott - Macmillan Pass
Niddery and Sekwi Map Sheets (105O/1, 2 and parts of 105O/7,8 & 105P/4,5), Macmillan Pass
The MacMillan Pass District (MPD) is one of the three primary SEDEX Districts within Selwyn Basin. It contains, the Tom and Jason sedimentary exhalative Zn, Pb, Ag, Ba deposits, numerous barren barite deposits, and the Mactung deposit, one of the largest undeveloped tungsten deposits in the western world. In the late 1970’s and early 1980’s, the MPD was the focus of intense exploration. From 1980 through 1983, the proponent undertook a 1:50,000 scale bedrock mapping program of the District. Publications from this work included Open File maps with an accompanying report and two brief external publications. Revisions to the mapping continued from 1984 to 1988. These results have never been published. No final maps or final report have been completed, and critical information such as formal stratigraphic nomenclature, paleontology, geochemistry, and structure are not publicly available.
This project will provide a comprehensive overview of the regional geological setting of mineral deposits in the Macmillan Pass District by producing a final synthesis of fieldwork completed in the 1980’s, consisting of a bulletin and 1:50,000 scale maps.
References
Abbott, J.G., 1983c, Geology of the Macmillan Fold Belt 105/O-SE and parts of 105P-SW (1:50,000 scale): Exploration and Geological Services Division, Yukon, Indian and Northern Affairs, Canada, Open File Maps.
Abbott, J.G., 1982b, Structure and stratigraphy of the Macmillan Fold Belt; evidence for Devonian faulting. In Yukon Geology and Exploration-1981; Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, p.22-33.
Abbott, J. G., 1986. Devonian extension and wrench tectonics near Macmillan Pass, Yukon Territory. In: Turner, R.J.W. and Eunaudi, M.T. Eds., The genesis of stratiform sediment-hosted lead and zinc deposits: conference proceedings; Stanford University Publications, Vol. 20, p.85-89.
Abbott, J.G., and Turner, R.J.W., 1990. Character and paleotectonic setting of Devonian stratiform sediment-hosted Zn-Pb-Barite Deposits, Macmillan Fold Belt, Yukon. In: Abbott and Turner eds., Mineral deposits of the northern Canadian Cordillera, Yukon-northeastern British Columbia, Field Trip Guidebook 14, 8th IAGOD Symposium; Geological Survey of Canada Open File 2169, p. 99-136.