| 当代火山喷发碎屑堆积物的研究进展及其主要类型 |
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| 引用本文： | 刘祥.当代火山喷发碎屑堆积物的研究进展及其主要类型[J].世界地质,1996,15(1):1-6. |
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| 作者姓名： | 刘祥 |
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| 作者单位： | Changchun Unly. of Earth Sciences，Changchull 130061 |
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| 基金项目： | 国家自然科学基金,地矿部地质行业科学技术发展基金 |
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| 摘 要： | 火山喷发碎屑堆积物主要分为：火山喷发空中降落堆积物、火山碎屑、流状堆积物、火山泥流堆积物和火山基浪堆积物。简述了这些火山碎屑堆积物的成因及主要特征。
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| 关 键 词： | 火山，火山喷发空落堆积物，火山碎屑流，火山泥流，火山基浪 |
Advances in Pyroclastic Deposits at Present and the Main Types of the Pyroclastic Deposits |
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| Liu Xiang.Advances in Pyroclastic Deposits at Present and the Main Types of the Pyroclastic Deposits[J].World Geology,1996,15(1):1-6. |
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| Authors: | Liu Xiang |
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| Abstract: | Pyroclastic deposits mainly can be devided into four types, fallout tephradeposits,pyroclastic flow deposits,lahar deposits and volcanic base surge deposits.The falloult tephra encompasses all the products ejected into air from a vent during avolcanic eruption. The pyroclastic flow is a rapid flow with high temparature and expandinghot gasses originated from a volcanic eruption down valleys and across surfaces lowgradient. The lahar is a rapid flowing mixture of volcanic debris and water originated from avolcano,resembling in behaviour of wet concrete as they flow.The volcanic base surges form at the base of eruption columns and travel outwardduring some hydroclastic erupting. Some characteristics of the pyroclastic deposits have beenillustrated in this paper. |
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| Keywords: | volcano fallout tephra pyroclastic flow lahar volcanic base surge |
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