Yukon Geological Survey publication metadata (English, HTML)

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Publisher-reported update

2026-08-26

Most epigenetic occurrences of gold and silver in the Pelly Mountains of central Yukon form two adjacent clusters at the headwaters of the Ketza River and Seagull Creek. The origin of these deposits has never been clear because they have been scarcely studied. Many are in Mississippian volcanic and intrusive rocks to which some have been attributed, and none are clearly associated with Mesozoic intrusions. This paper summarizes the characteristics of the deposits in this district which are probably epigenetic, and presents evidence that they are related to a domal uplift here named the Ketza-Seagull Arch, and to one or more buried Cretaceous intrusions.

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