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Text Description: Prominent tephra that typically lies about 3-6 cm below the top of recovered cores. Contained two geochemically distinct populations of glass shards. References:  A 500-year-long record of tephra falls from Redoubt volcano and other volcanoes in upper Cook Inlet, Alaska Paleomagnetic investigations of seismic and volcanic activity recorded in the sediments of Skilak Lake, Alaska |
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