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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Contributions to mineralogy and petrology 30 (1971), S. 336-342 
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Five obsidian flows located in Newberry Caldera, Oregon, were systematically sampled, and the samples have been chemically analyzed to examine the homogeneity in a single large flow and to study chemical differences among the flows. The largest flow, the Big Obsidian Flow, is highly homogeneous chemically. The five flows are very similar in composition, indicating a common source. Small chemical differences among the flows do exist, but the geologic cause of the differences is not determined.
    Type of Medium: Electronic Resource
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