%0 Journal Article
%T 40Ar/39Ar age determination on the Late Devonian tectonic event along the southern margin of the South Tianshan Mountains and its significance<br>南天山南缘晚泥盆世构造事件的^40Ar／^39Ar定年证据及其意义
%A LI XiangDong
%A XIA WenJiao
%A ZHU ZhongLiang Editorial
%A <br>李向东
%A 肖文交
%A 周宗良
%J 岩石学报
%D 2004
%I 
%X 南天山南缘前陆褶皱冲断带在独库公路范围内出露于铁力买提达坂一带,其构造岩片主体向南逆掩于塔里木盆地之上,构造样式以双向逆冲为特征。相关韧性剪切带中白云母矿物~(40)Ar/~(39)Ar同位素测年获坪年龄368±1Ma和等时线年龄368±6Ma。结合区域构造分析,这条作为南天山中央地块南部构造边界的大型复合式构造带,主要形成发育时限为晚泥盆世-早石炭世,并在二叠纪重新活动。前者可能是是南天山洋盆向北俯冲于伊犁地块之下的构造变形过程的痕迹,后者则可能是由伊犁-塔里木复合地体与北天山地块在晚石炭世-早二叠世发生碰撞而导致的构造变形。
%K South Tianshan Mountains fold-thrust belt
%K Double-vergence
%K ~(40)Ar/~(39)Ar dating<br>南天山南缘冲断带
%K 双向逆冲^40Ar／^39Ar同位素测年
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=2013B5467E3054B1614CEC199353FCED&aid=BAAE1A7A447FE698&yid=D0E58B75BFD8E51C&vid=A04140E723CB732E&iid=38B194292C032A66&sid=09F7C8D609E885AE&eid=A7379F6713A46835&journal_id=1000-0569&journal_name=岩石学报&referenced_num=1&reference_num=37