火山堆积物
火山堆积物-
火山碎屑堆积物中的浮岩岩石化学分析结果表明岩浆成分为粗面质。
Petrochemistry analysis of pumice component indicates that the magma can be assigned to trachytic magma .
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当代火山喷发碎屑堆积物的研究进展及其主要类型
Advances in Pyroclastic Deposits at Present and the Main Types of the Pyroclastic Deposits
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主要论述了这次大爆发的火山喷发碎屑堆积物的层序和分布。
The author deals with mainly the sequence and distribution of the pyroclastic deposits of the800 a.B.P.eruptions .