%0 Journal Article
%T The disintegration of Kuanping Group in North Qinling orogenic belts and Neo-proterozoic N-MORB<br>北秦岭宽坪岩群的解体及新元古代N-MORB
%A DIWU ChunRong
%A SUN Yong
%A LIU Liang
%A ZHANG ChengLi
%A WANG HongLiang
%A <br>第五春荣
%A 孙勇
%A 刘良
%A 张成立
%A 王洪亮
%J 岩石学报
%D 2010
%I 
%X Kuangping Group located in North Qinling orogenic belt which consists chiefly of metabasalts and meta-sedimentary. A new LA-ICPMS zircon U-Pb age of metabasalt of Kuanping Group is presented and gives a weighted mean 207Pb/206PbPb age of 943Ma which in the Neo-proterozoic time. However, the meta-sedimentary of Kuanping Group is limited to that in Early Phanerozoic time, but the Proterozoic, as previously considered. Therefore, this indicate that the two types of rock is not a continuous stratigraphic unit, protoliths of metabasalts were tholeiitic basalts with N-MORB geochemical characteristics, which represents a dismembered ophiolite and indicate a remnants of Greenville orogeny in the North Qinling orogenic belts.
%K North Qinling orogenic belt
%K Kuangping Group
%K Greenschists
%K Zircon
%K Grenville orogeny<br>北秦岭造山带
%K 宽坪岩群
%K 绿片岩
%K 锆石
%K 格林威尔造山
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=2013B5467E3054B1614CEC199353FCED&aid=2DB7099ED6788A0D037C2236E74C1FF0&yid=140ECF96957D60B2&vid=96C778EE049EE47D&iid=DF92D298D3FF1E6E&sid=E6A891D2134F30C0&eid=438F607B4D053FEF&journal_id=1000-0569&journal_name=岩石学报&referenced_num=0&reference_num=0