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Par Collection Par Auteur- GORTON, M. P. (1)
- HAMILTON, T. D. (1)
- WESTGATE, J. A. (1)
- 1983 (1)
- tephra has been recognized in the Koyukuk Basin and Fairbanks region of Alaska, and in the Old Crow Lowlands of the northern Yukon Territory, some 600 km to the east-northeast. The source vent is unknown, but these occurrences, considered in relation