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SAMPLE INFO : 87-23-03
Sample ID:87-23-03
Station ID:87-23-03
Date Sampled:1987-01-01
Sample Type 1:Other
Text Description:
Ashishik ash,Qo,ropey pumice from black agglomerate above basal Qo ash (tan rhyodacite layer) should be correlative w/ 87-20-13,

Petrogenesis of adjacent calc-alkaline and tholeiitic volcanoes on Umnak Island, Aleutian Islands, Alaska


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