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Country:
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USA 
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Province:
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Alaska, Brooks Range 
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Locality:
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Kanaktuk Lake, Anaktuvuk Valley, 12084 
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Layer:
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black chert in Alapah Lst. | 
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Lower Boundary:
 | 
UAK Alapah Lst. base, 333.5 million years
 
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| 
Upper Boundary:
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UAK Alapah Lst. top, 326.4 million years
 
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| 
Georeference:
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