2 cm thick; pumice, rare blocky shards, and rare bubble-wall shards. In organic-rich silt. Reworked; 30 cm below UT2079. Field name 905a
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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