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Yukon Geological Survey

YGS Publication Details


Reference Number
YEG2019_1
Title
Preliminary report on the bedrock geology of the Rackla River area, southern Wernecke Mountains, Yukon (parts of NTS 106C/4, 5 and 106D/1, 8)
Reference Type
Yukon Geological Survey
Document Type
Annual Report Paper


General Information

Abstract: The Rackla River area is underlain by normal faulted and gently folded sedimentary strata of the Paleoproterozoic Wernecke Supergroup, Mesoproterozoic Pinguicula Group, Neoproterozoic Hematite Creek Group and Windermere Supergroup, and Paleozoic Bouvette Formation. Gabbro dikes and sills that are likely age equivalent to the ca. 1380 Ma Hart River Sills cut the Wernecke Supergroup rocks. The presence of a mafic volcaniclastic horizon within the Bouvette allows its informal subdivision into a lower and upper member. These volcaniclastic rocks may the distal equivalent to volcanic rocks near the Tiger deposit, located ~20 km to the southwest. Three major angular unconformities are documented in the map area: at the base of the Rapitan Group, the base of the lower Bouvette, and the base of the upper Bouvette Formation.
Authors: Ambrose, T. and Bowie, S.
NTS Mapsheet(s): 106C04, 106C05, 106D01, 106D08
Citation: Ambrose, T. and Bowie, S., 2020. Preliminary report on the bedrock geology of the Rackla River area, southern Wernecke Mountains, Yukon (parts of NTS 106C/4, 5 and 106D/1, 8). In: Yukon Exploration and Geology 2019, K.E. MacFarlane (ed.), Yukon Geological Survey, p. 1–21.

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Location Map

NTS Mapsheet(s): 106C04, 106C05, 106D01, 106D08

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Number Relationship Authors Title
YEG2019 Contained By Yukon Geological Survey Yukon Exploration and Geology 2019