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Reference Number
YEG2017_9
Reference Type
Yukon Geological Survey
Document Type
Annual Report Paper

Title: Stratigraphic affinity of late Neoproterozoic limestone in the vicinity of Tillei and McPherson lakes, 105H/13, 14, southeastern Yukon
Authors: Moynihan, D.
NTS Mapsheet(s): 105H13, 105H14
Citation: Moynihan, D., 2018. Stratigraphic affinity of late Neoproterozoic limestone in the vicinity of Tillei and McPherson lakes, 105H/13, 14, southeastern Yukon. In: Yukon Exploration and Geology 2017, K.E. MacFarlane (ed.), Yukon Geological Survey, p. 129-137.

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Abstract

The area around Tillei and McPherson lakes includes extensive exposure of a relatively thick, late Neoproterozoic limestone. The limestone is lithologically similar to the Espee Formation of the Ingenika Group, but is in geological continuity with the Hyland Group. The Hyland and Ingenika groups are age-equivalent sequences that were in close proximity before they were separated by Cenozoic dextral displacement on the Tintina fault. The area may therefore contain evidence for stratigraphic linkages between the two groups. The limestone is interpreted to have been deposited in a high-standing region outboard of the Hyland Group type-area. Further work is required to determine the extent to which late Neoproterozoic paleobathymetry aligns with Paleozoic platform/basin margins.

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