%0 Journal Article
%T Hydrogen isotopic compositions of mantle derived clinopyroxene megacrysts from Hannuoba by ion microprobe: micro scale heterogeneity.<br>汉诺坝幔源单斜辉石巨晶氢同位素组成的离子探针分析:微尺度不均一性
%A XIA Qunke
%A PAN YouJie
%A CHEN DaoGong
%A DELOULE Etienne
%A ZHI Xiachen
%A CHENG Hao
%A WU YuanBao
%A <br>夏群科
%A 潘尤杰
%A 陈道公
%A DELOULE Etienne
%A 支霞臣
%A 程昊
%A 吴元保
%J 岩石学报
%D 2001
%I 
%X Hydrogen isotopic compositions of three mantle derived clinopyroxene megacrysts from Cenozoic basalts at Hannuoba have been measured by ion microprobe. Heterogeneity occurs in a single grain, δD variation is up to 60‰ on the scale of 2mm. No correlation exists between δD values and hydrogen contents and chemical compositions are homogeneous, so the hydrogen isotope variations are considered to be inherited from parent magma. We suggest that the δD scatter of the parent magma could be related to D/H fractionations between vapor and melt during magma degassing. Shortly after the formation of clinopyroxene megacrysts, they are brought to the surface by the host magma and underwent quenching.
%K Ion microprobe
%K Hydrogen isotope
%K Clinopyroxene
%K Hannuoba<br>离子探针
%K 氢同位素
%K 单斜辉石
%K 汉诺坝
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=2013B5467E3054B1614CEC199353FCED&aid=FD5AB488B28C47B1&yid=14E7EF987E4155E6&vid=BCA2697F357F2001&iid=CA4FD0336C81A37A&sid=DF92D298D3FF1E6E&eid=F3090AE9B60B7ED1&journal_id=1000-0569&journal_name=岩石学报&referenced_num=3&reference_num=26