老挝琅南塔断裂新构造活动特征与2007年班南坎M_S6.6地震
|
摘要
根据断裂的地质、地貌特征和卫星影像资料,阐述了老挝琅南塔断裂的新构造运动表现和运动方式。结果表明:(1)琅南塔断裂的新构造活动主要表现为正断层兼左旋走滑运动,为晚更新世活动断裂;(2)沿断裂历史上发生过一系列6级以上地震,特别是2007年5月16日老挝班南坎6.6级地震与该断裂的活动密切相关。
According to the geological and geomorphic characteristics of the Louang Nam Tha fault in Laos and the satellite photograph explanation for it,we studied the neo-tectonic movement behaviors and patterns of the fault.The results show:(1)the neo-tectonic activity of the fault is mainly formal and left-lateral dip-slip,the updated active time is in late-Pleistocene;(2)there were a series of earthquakes with M≥6.0 occurring along the fault,especially the Ban Namkhan,Laos,MS6.6 earthquake on May 16,2007,concerning the activity of the fault very nearly.
According to the geological and geomorphic characteristics of the Louang Nam Tha fault in Laos and the satellite photograph explanation for it,we studied the neo-tectonic movement behaviors and patterns of the fault.The results show:(1)the neo-tectonic activity of the fault is mainly formal and left-lateral dip-slip,the updated active time is in late-Pleistocene;(2)there were a series of earthquakes with M≥6.0 occurring along the fault,especially the Ban Namkhan,Laos,MS6.6 earthquake on May 16,2007,concerning the activity of the fault very nearly.
引文
李祥根.2003.中国新构造运动概论[M].北京:地震出版社.
卢海峰,马保起,刘光勋.2006.甘肃文县北部北东东向断裂带新构造活动特征[J].地震研究,29(2):147-155.
Ba rr S M,Macdonald A S.1987.Nan River Suture Zone,NorthernThailand[J].Geology,15:907-910.
B u nopas S,Fontaine H,Salyapongse S,et al.1983.Permian Paleo-geography in Southeast Thailand Evidenced by New Discovery[J].Geol.Soc.Thailand,6(1):17-21.
Mo rlry C K.2002.A Tectonic Model for the Tertiary Evolution ofStrike-Slip Faults and Rift Basins in SE Asia[J].Tectonophys-ics,347(4):189-215.
M o rlry C K.2007.Variation in Late Cenozoic-recent Strike-slip and Ob-lique-exetensional Geometries,Within Indochina:the Influence ofPre-existing Fabrics[J].Journal of Structural Geology,29:405-437.
Y e.d.sulidi-Kondrat'yev.1989.Main Features of The Structure and Geo-dynamics of Laos[J].Geotectonics,23(6):543-549.
卢海峰,马保起,刘光勋.2006.甘肃文县北部北东东向断裂带新构造活动特征[J].地震研究,29(2):147-155.
Ba rr S M,Macdonald A S.1987.Nan River Suture Zone,NorthernThailand[J].Geology,15:907-910.
B u nopas S,Fontaine H,Salyapongse S,et al.1983.Permian Paleo-geography in Southeast Thailand Evidenced by New Discovery[J].Geol.Soc.Thailand,6(1):17-21.
Mo rlry C K.2002.A Tectonic Model for the Tertiary Evolution ofStrike-Slip Faults and Rift Basins in SE Asia[J].Tectonophys-ics,347(4):189-215.
M o rlry C K.2007.Variation in Late Cenozoic-recent Strike-slip and Ob-lique-exetensional Geometries,Within Indochina:the Influence ofPre-existing Fabrics[J].Journal of Structural Geology,29:405-437.
Y e.d.sulidi-Kondrat'yev.1989.Main Features of The Structure and Geo-dynamics of Laos[J].Geotectonics,23(6):543-549.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心