长白山火山历史上最大火山爆发火山碎屑物层序与分布

• 基础地质·矿床·盆地 • 下一篇

长白山火山历史上最大火山爆发火山碎屑物层序与分布

刘祥

吉林大学地球科学学院，长春 130061

收稿日期:2005-08-21 修回日期:1900-01-01 出版日期:2006-05-26 发布日期:2006-05-26
通讯作者: 刘祥

Sequence and Distribution of the Pyroclastic Deposits of the Greatest Eruption of Changbaishan Volcano During the Period of History

LIU Xiang

College of Earth Sciences, Jilin University, Changchun 130061, China

Received:2005-08-21 Revised:1900-01-01 Online:2006-05-26 Published:2006-05-26
Contact: LIU Xiang

摘要/Abstract

摘要： 长白山火山历史时期规模最大的火山喷发发生在1199~1200年。这次大爆发分为两次普林尼（Plinian）式喷发:第一次（早期）喷发称赤峰期，第二次（晚期）喷发称园池期。赤峰期喷发模式为：普林尼式喷发柱（赤峰空落浮岩层）—火山碎屑流（长白火山碎屑流层）—火山泥流（二道白河火山泥流层），主要由火山碎屑流诱发火山泥流；园池期火山喷发模式为：普林尼式喷发柱（园池空落浮岩火山灰层）—火山碎屑流（冰场火山碎屑流层）。两次普林尼式喷发空落火山碎屑物总量约120 km³，长白火山碎屑流层总量约8 km³，冰场火山碎屑流层总量约0.5 km³，火山泥流堆积总量约为2 km³。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。

关键词: 火山爆发, 火山喷发碎屑堆积物, 长白山火山

Abstract: The recorded 1199~1200 A.D. eruption is the largest among all the Changbaishan volcano eruptions in history. It can be subdivided into two phases of Plinian eruption, the first is named the Chifeng phase and the second the Yuanchi phase. The eruptive pattern of the Chifeng phase is: Plinian column (the Chifeng pumice fall deposits) → pyroclastic flow (the Changbai pyroclastic flow deposits) → lahar (the Erdaobaihe lahar deposits) mainly triggerd by pyroclastic flow. The eruptive pattern of the Yuanchi phase is from Plinian column (the Yuanchi pumice and ash fall deposits) → pyroclastic flow (the Bingchang pyroclastic flow deposits). The total volume of both the first and the second Plinian falls has been estimated at about 120 km³. The bulk volume of the Changbai pyroclastic flow deposits was estimated about 8 km³; that of the Bingchang pyroclastic flow deposits about 0.5 km³ and of the Erdaobaihe lahar deposit about 2 km³. The author deals with mainly the sequence and distribution of the pyroclastic deposits of the 800 a.B.P. eruptions.

Key words: volcano eruption, pyroclastic deposits, Changbaishan volcano

中图分类号:

P317.3

刘祥. 长白山火山历史上最大火山爆发火山碎屑物层序与分布[J]. J4, 2006, 36(03): 313-318.

LIU Xiang. Sequence and Distribution of the Pyroclastic Deposits of the Greatest Eruption of Changbaishan Volcano During the Period of History[J]. J4, 2006, 36(03): 313-318.

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