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Alaska
1
Aniakchak
1
DISCRIMINANT FUNCTION-ANALYSIS
1
HOLOCENE TEPHRA HORIZONS
1
Holocene
MARKER HORIZON
1
Mt. Churchill
1
NEW-ZEALAND
1
NORTHWESTERN CANADA
1
UPPER COOK INLET
1
VOLCANIC ACTIVITY
1
WESTERN NORWAY
1
White River Ash
1
YUKON-TERRITORY
1
cryptotephra
1
radiocarbon
1
tephra
1
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