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Placer gold settings within an alpine glaciated environment, Granite Creek, Yukon (NTS 105M/14)
Reference Type
Yukon Geological Survey
Document Type
Annual Report Paper

General Information

Abstract: Alpine glaciers from cirques of Granite and Albert creeks have deformed and reworked sediments in the Granite Creek valley and deposited locally sourced gold. Placer mining operations in the valley allowed detailed study of sedimentary deposits. The main units identified are from at least two glacial episodes which advanced farther than the previously mapped limits. Thick sequences of advance and retreat outwash blanket the till and represent high energy depositional environments. At least one proglacial lake formed due to ice-damming of lower Granite Creek by the Cordilleran Ice Sheet. We provide a stratigraphic record extending approximately 130 000 years and have correlated alpine till units to MIS 4, which has not been identified elsewhere in central Yukon. Multiple gold-bearing sedimentary units are found in the stratigraphy, representing glacial, interglacial/interstadial, and modern processes. This work highlights processes important to gold concentration that can be applied to other alpine glaciated areas with proximal gold mineralization.
Authors: Steinke, J.L, Bond, J.D. and Ward, B.C.
NTS Mapsheet(s): 105M14
Citation: Steinke, J.L, Bond, J.D. and Ward, B.C., 2022. Placer gold settings within an alpine glaciated environment, Granite Creek, Yukon (NTS 105M/14). In: Yukon Exploration and Geology 2021, K.E. MacFarlane (ed.), Yukon Geological Survey, p. 51–82.


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NTS Mapsheet(s): 105M14

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YEG2021 Contained By Yukon Geological Survey Yukon Exploration and Geology 2021