%0 Journal Article
%T Sm-Nd age and Sr, Nd isotopic characteristics of the Fanshan potassic alkaline ultramafite-syenite complex in Hebei province, China<br>河北矾山钾质碱性超镁铁岩—正长岩杂岩体Sm—Nd年龄和Sr、Nd同位素特征
%A MU BaoLei
%A SHAO JiAn
%A CHU ZhuYin
%A YAN GuoHan
%A QIAO GuangSheng
%A <br>牟保磊
%A 邵济安
%A 储著银
%A 阎国翰
%A 乔广生
%J 岩石学报
%D 2001
%I 
%X 河北矾山侵入杂岩,由层状钾质超镁铁岩--正长岩组成,已知它含有大型磁铁矿磷灰石矿床.现在已测定了岩体的岩石和矿物的Sm-Nd同位素资料,并获得了杂岩体的Sm-Nd同位素年龄.4个矿物样品和2个全岩样品Sm-Nd等时线年龄为243.4±9.7Ma,INd=0.512045,εNd(t)=-5.4;4个矿物样品和7个全岩样品等时线年龄为239±19Ma,INd=0.512055,εNd(t)=-5.3.这些年龄资料表明,矾山岩体可能侵位于早三叠.而矾山岩体的Rb-Sr等时线年龄为218±8Ma,Isr=0.70554,εsr=18.4的事实可能暗示矾山岩体在中三叠才完全固结并达到Rb-Sr体系封闭的温度.上述矾山岩体的Sr、Nd同位素特征表明,矾山岩体的物质源自富集的上地幔.
%K Alkaline intrusive
%K Potassic alkaline layered ultramafite
%K Sm
%K Nd chronology
%K Sr and Nd isotopes
%K Fanshan intrusive<br>碱性侵入体
%K 钾质碱性层状超镁铁岩
%K 钐－钕等时线
%K 矾山侵入体
%K 锶同位素
%K 钕同位素
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=2013B5467E3054B1614CEC199353FCED&aid=ED6D866E4383D303&yid=14E7EF987E4155E6&vid=BCA2697F357F2001&iid=38B194292C032A66&sid=EF78DD85C21CB57F&eid=683005D16807E4FE&journal_id=1000-0569&journal_name=岩石学报&referenced_num=19&reference_num=31