%0 Journal Article
%T New constraints on formation ages of ophiolites in northern Junggar and comparative study on their connection<br>准噶尔北部蛇绿岩形成时限新证据及其东、西准噶尔蛇绿岩的对比研究
%A Zhang YY
%A Guo ZJ
%A <br>张元元
%A 郭召杰
%J 岩石学报
%D 2010
%I 
%X There exist Kujibai ophiolite in Taerbahatai, Hongguleleng-Hebukesaier ophiolite and Zhaheba-Aermantai ophiolite in northern Junggar. The SHRIMP zircon U-Pb dating of cumulate gabbro in Hongguleleng ophiolite is 472±8.4Ma (MSWD=1.4) and the zircon U-Pb age of plagioclase granite in Zhaheba ophiolite is 495.9±5.5Ma (MSWD=2.7). Taerbahatai ophiolite, Hongguleleng-Hebukesaier ophiolite and Zhaheba-Aermantai ophiolite had been formed before Early Ordovician and mostly emplaced in Devonian-Carboniferous volcanic sedimentary strata along faults. A comparative study on formation age, regional geology and geophysical characteristics of these three segments of ophiolites in northern Junggar indicates that they are correlated as a unique ophiolite belt passing through from east to west in northern Junggar. This study is significant for the reconstruction of Paleozoic tectonic framework and regional tectonic evolution.
%K Northern Junggar
%K Ophiolite
%K Formation age
%K Comparative study<br>准噶尔北部
%K 蛇绿岩
%K 形成时代
%K 对比研究
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=2013B5467E3054B1614CEC199353FCED&aid=FC8DB74C1DB8F5837A60D67680D60E37&yid=140ECF96957D60B2&vid=96C778EE049EE47D&iid=0B39A22176CE99FB&sid=B941678158018439&eid=389DA78D878702A9&journal_id=1000-0569&journal_name=岩石学报&referenced_num=1&reference_num=57