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西昌市大箐梁子一带古地震初探
APPROACH ON THE DAQING-RIDGE ANCIENTEARTHQUAKE IN XICHANG
【摘要】 大箐梁子一带有着众多明显的古地震遗迹。它们的相互叠加和重复,说明该地是一个曾多次发生强震的震中区。从古地震遗迹的初步研究可知,目前地处大箐梁子北侧一带的活动断层侵蚀作用十分活跃,造成了邛海水系袭夺则木河上游水系,并迫使分水岭不断南移。
【Abstract】 There are numerous obvious remains of ancient earthquake along the Daqing-ridge. They overlay and duplicate each other.Some of places are the epicentral regions in which many earth-quakes happened.Now the arching structures are forming along the Daqing-ridge according to ap-proach on the remains of ancient earthquake. The erosion processes with fault activity are awfully dynamic along the north of the ridge. It makes clear that the Qionghai river-system has eroded the upper reaches river-system of the zemuhe and that the dividing range has kept coming to move to south.
【关键词】 西昌;
则木河断裂;
构造活动特征;
地震遗迹;
【Key words】 Xichang; The Zemuhe fault; Feathure of structure activith; Historical remains of earthquake.;
【Key words】 Xichang; The Zemuhe fault; Feathure of structure activith; Historical remains of earthquake.;
- 【文献出处】 四川地震 ,EARTHQUAKE RESEARCH IN SICHUAN , 编辑部邮箱 ,1994年02期
- 【分类号】P315.2
- 【被引频次】3
- 【下载频次】56