%0 Journal Article
%T Late Cenozoic Left-Slip Faulting Process of the East Kunlun-Qinling Fault System in West Qinling Region and Its Eastward Propagation<br>西秦岭地区东昆仑-秦岭断裂系晚新生代左旋走滑历史及其向东扩展
%A ZHANG Yue-qiao
%A MA Yin-sheng
%A YANG Nong
%A ZHANG Hui-ping
%A SHI Wei
%A <br>张岳桥
%A 马寅生
%A 杨农
%A 张会平
%A 施炜
%J 地球学报
%D 2005
%I 
%X Based on TM imagery interpretation and field observations, this paper has described the distribution and morphostructural features of main active faults in East Kunlun, analyzed tectono-sedimentary characteristics of the Neogene pull-apart basins in West Qinling region, and proposed a 3-stage evolutionary model for the East Kunlun-Qinling fault system in Late Cenozoic. It is pointed out that the East Kunlun-Qinling fault system behaved as transtensional strike-slip faulting from Late Miocene to Early Pliocene, with the development of pull-apart basins and ultrabasic volcanic activities along the fault zones. The onset of this faulting stage was concomitant with the change in the direction of extension from NE-SW to NW-SE in Weihe graben. Beginning from Late Pliocene (about 3.4 Ma ago), the kinematics of the East Kunlun-Qinling fault system changed into transpressional strike-slip faulting, which caused gentle deformation of the Neogene pull-part basins. This deformation stage lasted till Early Pleistocene. Its eastward propagation caused widespread effect of crustal deformation, which included the initiation and development of the N-S trending Minshan uplift in the eastern margin of Tibetan plateau, the Fen-Wei graben system in North China and the right-lateral strike-slip motion along the Tan-Lu fault zone. During Middle and Late Pleistocene, the fault system was active left-laterally with a normal slip component, mostly localized along the three bifurcated fault zones in East Kunlun.
%K East Kunlun-Qinling fault system
%K transpression
%K transtension
%K pull-apart basin
%K Neogene
%K Quaternary<br>东昆仑-秦岭断裂系
%K 走滑伸展
%K 走滑挤压
%K 拉分盆地
%K 新近纪
%K 第四纪
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=1DF69A47DE80569EC8F859DF61571180&aid=82E53A58B96F5AABCD8F0294C53228C3&yid=2DD7160C83D0ACED&vid=96C778EE049EE47D&iid=CA4FD0336C81A37A&sid=CA4FD0336C81A37A&eid=5D311CA918CA9A03&journal_id=1006-3021&journal_name=地球学报&referenced_num=12&reference_num=33