< 1 cm thick; bubble-wall shards and trace amounts brown glass; in dark brown organic silt about 1 m above Sheep Creek-K (UT2023); field name DF03-20. Sample collected by D. Froese, 2003.
Changing ideas on the identity and stratigraphic significance of the Sheep Creek tephra beds in Alaska and the Yukon Territory, northwestern North America
A catalogue of late Cenozoic tephra beds in the Klondike Goldfields and adjacent areas, Yukon Territory
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