喀什河断裂中更新世以来的活动速率研究
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摘要
利用地貌和新近系位错测量的方法,结合遥感、地貌、变形测量与新近纪测年等手段,重点研究了伊犁盆地喀什河断裂中更新世以来的垂直活动速率。喀什河断裂在中更新世以来的新活动主要表现在河流阶地和地层的位错,综合研究了这些位错数据,分析了断裂各段在中更新世以来的活动速率,讨论了1812年尼勒克地震的平均位错反映的断裂现今最新的活动速率,提供了喀什河断裂中更新世以来不同时期活动的定量数据,填补了天山内部新近纪晚期研究的部分空白,对现今地壳运动与地球动力学研究及减轻地质灾害有重要意义。
Using physiognomy and neogene offset methods,combined with remote sensing,physioghomy,deformation measure and neogene dating and so on,to study the vertical activity velocity of Kashi river fault in Yili basin since middle pleistocene.The fluvial terrace and stratum offset are the main new activity in Kashi river fault since middle pleistocene,summarized the datum,analyzed the activity velocity about every segment in the fault since middle pleistocene,discussed the new activity velocity nowadays reflected by average offset of Nileke earthquake occurred in 1812,offered ration datum of activity in different period in Kashi river fault since middle pleistocene,it fills up the part blank of the late neogene inside Tianshan,and it is important meaning for crustal movement nowadays,geodynamics and reliefing geologic disaster
Using physiognomy and neogene offset methods,combined with remote sensing,physioghomy,deformation measure and neogene dating and so on,to study the vertical activity velocity of Kashi river fault in Yili basin since middle pleistocene.The fluvial terrace and stratum offset are the main new activity in Kashi river fault since middle pleistocene,summarized the datum,analyzed the activity velocity about every segment in the fault since middle pleistocene,discussed the new activity velocity nowadays reflected by average offset of Nileke earthquake occurred in 1812,offered ration datum of activity in different period in Kashi river fault since middle pleistocene,it fills up the part blank of the late neogene inside Tianshan,and it is important meaning for crustal movement nowadays,geodynamics and reliefing geologic disaster
引文
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[2]Avouac J P,Tapponnieret P,Bai M,et al.Active Thrusting and Folding along the North Tien Shan,and Late Cenozoic Rotationof the Tarim relative to Dzhungaria and Kazakhstan[J].J.Geophys.Res,1993,98(4):6 755-6 804.
[3]尹光华.新疆伊犁盆地新构造运动与地震[J].内陆地震,1993,7(2):180-187.
[4]张培震,邓起东,杨晓平,等.天山的晚新生代构造变形及其地球动力学问题[J].中国地震,1996,12(2):127-140.
[5]杨晓平,邓起东,张培震,等.北天山地区活动逆断裂-褶皱带构造与潜在震源估计[J].地震地质,1998,20(3):193-200.
[6]王树基,穆桂金,赵兴有,等.亚洲中部山地夷平面研究[M].北京:科学出版社,1998.
[7]张国伟,李三忠,刘俊霞,等.新疆伊犁盆地的构造特征与形成演化[J].地学前缘,1999,6(4):203-214.
[8]汪一鹏,沈军.天山北麓活动构造基本特征[J].新疆地质,2000,18(3):203-210.
[9]邓起东,冯先岳,张培震,等.天山活动构造[M].北京:地震出版社,2000.
[10]陈哲夫,王有标.新疆天山地质构造几个问题的探讨[J].新疆地质,1985,7(2):59-70.
[11]尹光华,李军,张勇,等,尼勒克地震滑坡的统计分析及初步研究[J].内陆地震,2001,15(1):56-63.
[12]尹光华,蒋靖祥,张勇,等.1812年尼勒克大地震的地表破坏[C]//李克,王兰民,刘耀伟.中国八级大震研究及防震减灾学术会议论文集.北京:地震出版社,2001:31-37.
[13]尹光华,蒋靖祥,张勇,等.新疆尼勒克1812年地震断层构造特征[J].西北地震学报,2002,24(2):183-186.
[14]尹光华,蒋靖祥,张勇.新疆伊犁喀什河断裂及其活动性研究[J].内陆地震,2003,17(2):109-116.
[15]尹光华,蒋靖祥,裴宏达.1812年尼勒克地震的最大位移[J].内陆地震,2006,20(4):183-192.
[16]冯先岳.新疆古地震[M].乌鲁木齐:新疆科技卫生出版社,1997.
[17]Wallace R E.Profiles and Ages of Young Fault Scarps in North-central Nevada[J].Geological Society of America Bulletin,1977,88(9):1 267-1 281.
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