| 缅甸兰里岛泥火山灾害与成因机制探讨 |
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| 引用本文： | 万园,许建东,于红梅,赵波,潘波.缅甸兰里岛泥火山灾害与成因机制探讨[J].地震地质,2011,33(2):452-461. |
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| 作者姓名： | 万园 许建东 于红梅 赵波 潘波 |
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| 作者单位： | 中国地震局地质研究所; |
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| 基金项目： | 中国地震局行业专项(20070827)资助 |
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| 摘 要： | 文中主要探讨缅甸兰里岛泥火山灾害与成因机制,结合兰里岛地质背景以及泥火山活动现状,对在兰里岛东北部、中部以及西部所取3个泥火山采样点的样品进行粒度分析以及显微形貌分析,发现样品粒度在1～100μm之间,均呈单峰正态分布,粒径中值相近,粒度分布集中,分选较差,粒度对称程度呈很正偏态;样品基质以泥质为主含有大量泥质碎屑、细...
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| 关 键 词： | 泥火山 粒度分析 显微形貌分析 兰里岛 |
| 收稿时间： | 2010-09-13 |
| 修稿时间： | 2011-02-14 |
MUD VOLCANO DISASTER AND GENETIC MECHANISM IN RAMREE ISLAND |
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| WAN Yuan,XU Jian-dong,YU Hong-mei,ZHAO Bo,PAN Bo.MUD VOLCANO DISASTER AND GENETIC MECHANISM IN RAMREE ISLAND[J].Seismology and Geology,2011,33(2):452-461. |
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| Authors: | WAN Yuan XU Jian-dong YU Hong-mei ZHAO Bo PAN Bo |
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| Affiliation: | WAN Yuan XU Jian-dong YU Hong-mei ZHAO Bo PAN Bo(Institute of Geology,China Earthquake Administration,Beijing 100029,Chian) |
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| Abstract: | This paper mainly discusses the mud volcano disaster and its genetic mechanism in Ramree Island.Combined with the geological background of Ramree Island and the present situation of the mud volcano,grading analysis and micro-morphology analysis have been made by taking samples from three sampling sites of the northeast,the middle and the western part of Ramree Island.The finding is that the particle sizes of samples between 1～100μm show a unimodel normal distribution,with similar grain size mid-value,concentrated size distribution,poor sorting,and quite positive skewness in grading symmetry;The samples’ matrix are mainly argillaceous,containing a lot of argillaceous clasts,tiny crystal clasts and a few pores,and having a little strongly altered plagioclase phenocryst and pyroxene phenocryst,from which,we can judge that the sampling sites have the same provenance.Thus,it can be deduced that there is a uniform argillaceous layer as the unified provenance of the Ramree Island mud volcano. |
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| Keywords: | mud volcano grading analysis micro-morphology analysis Ramree Island |
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