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Text Description: <1.5 cm thick; colourless to brown bubble-wall shards, pumice, and rare spheres; tephra bed sample contained large amounts of detrital mineral contents; in sand lens within the Upper White Channel Gravel; field name DF96-39 References:  A catalogue of late Cenozoic tephra beds in the Klondike Goldfields and adjacent areas, Yukon Territory |
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