%0 Journal Article
%T OIB-type picritic porphyrite from Jianchuan in the western Yunnan Province: Results of break-off of the subducting plate?<br>滇西剑川OIB型苦橄玢岩:俯冲板块断离的产物?
%A KOU CaiHu
%A ZHANG ZhaoChong
%A HOU Tong
%A LIAO BaoLi
%A LI HongBo
%A <br>寇彩化
%A 张招崇
%A 侯通
%A 廖宝丽
%A 李宏博
%J 岩石学报
%D 2011
%I 
%X Small scale OIB-type picritic porphyrite,comprising olivine,clinopyroxene and plagioclase,outcrops in Jianchuan area,western Yunnan,and the olivine is predominantly chrysolite with the Mg# up to 88.8.The bulk-rock composition is characterized by relatively low SiO2(43%~48%) but high MgO(12%~24%) content.On the basis of the principle of the olivine-melt equilibrium,we conclude that their parental magma is picritic(MgO=13%,FeO=10%).The normalized rare-earth element(REE) patterns of picritic porphyrite is simi...
%K Picritic porphyrite
%K Primitive magma
%K Slap break-off
%K Upwelling of the asthenosphere
%K Jianchuan<br>苦橄玢岩
%K 原始岩浆
%K 板片断离
%K 软流圈上涌
%K 剑川
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=2013B5467E3054B1614CEC199353FCED&aid=B0A3094CBEF84E91D50A6BBB48E1D499&yid=9377ED8094509821&vid=DB817633AA4F79B9&iid=9CF7A0430CBB2DFD&sid=C54FD882220E5646&eid=349E8AF2BCA314C4&journal_id=1000-0569&journal_name=岩石学报&referenced_num=0&reference_num=16