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Text Description: 3.5 cm thick; bubble-wall shards and lesser amounts of pumice; in massive brown silt ?3.2 m above gravel sitting on bedrock bench; on low terrace of Sixtymile River; ~90 cm above MF tephra (UT1521) and ~175 cm above Coal Creek tephra (UT1522); field name 98SJP28a References:  A catalogue of late Cenozoic tephra beds in the Klondike Goldfields and adjacent areas, Yukon Territory |
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