8 tephra was deposited directly on grassy meadow vegetation and preserved in permafrost (Figure 7). Fossil nests of arctic ground squirrels (Spermophilus parryii) and bones of the well-known Beringia “big-three”, wo

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Date: 2013-07-26 21:36:51 Tephra Geochronology Saint Elias Mountains Stratovolcanoes Incremental dating Tephrochronology Volcanic ash Wrangell Volcanic Field Mount Churchill Geology Volcanology Volcanism		8 tephra was deposited directly on grassy meadow vegetation and preserved in permafrost (Figure 7). Fossil nests of arctic ground squirrels (Spermophilus parryii) and bones of the well-known Beringia “big-three”, wo Add to Reading List Source URL: www.tc.gov.yk.ca Download Document from Source Website File Size: 947,85 KB Share Document on Facebook

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