北祁连东部两类Ⅰ型花岗岩定年及其地质意义

吴才来 杨经绥 杨宏仪 史仁灯 陈松永 郑秋光 Joseph L.WOODEN. 北祁连东部两类Ⅰ型花岗岩定年及其地质意义[J]. 岩石学报, 2004, 20(3): 425-432.
引用本文: 吴才来 杨经绥 杨宏仪 史仁灯 陈松永 郑秋光 Joseph L.WOODEN. 北祁连东部两类Ⅰ型花岗岩定年及其地质意义[J]. 岩石学报, 2004, 20(3): 425-432.
WU CaiLai,YANG JingSui,YANG HungYi,Joseph L W00DEN,SHI RenDeng,CHEN SongYoung,ZHENG QiuGuang Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,china Chungkung University,Taiwan,China Stanford University,CA. USA. Dating of two types of granite from north Qilian,China[J]. Acta Petrologica Sinica, 2004, 20(3): 425-432.
Citation: WU CaiLai,YANG JingSui,YANG HungYi,Joseph L W00DEN,SHI RenDeng,CHEN SongYoung,ZHENG QiuGuang Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,china Chungkung University,Taiwan,China Stanford University,CA. USA. Dating of two types of granite from north Qilian,China[J]. Acta Petrologica Sinica, 2004, 20(3): 425-432.

北祁连东部两类Ⅰ型花岗岩定年及其地质意义

  • 基金项目:

    国家自然科学基金(49732070)、国土资源部“十五”重点科技项目(20010101)、国家地质调查项目(DKD2001003)、新中法项目(01CB71100104)的共同成果

  • 北祁连东部早古生代地层中产出两种特征不同的I型花岗岩类,其一以井子川岩体为代表,暗色矿物以角闪石为主,稀土总量为90×10~(-6)~106×10~(-6),轻重稀土比值小于8,锆石的SHRIMP年龄为464±15Ma,岩体形成的构造环境类似于岛弧;其二是以黄羊河岩体为代表,暗色矿物以黑云母为主,稀土总量为214×10~(-6)~250×10~(-6),轻重稀土比值大于8,锆石的LA-ICP-MS年龄为383±6 Ma,岩体形成于碰撞后环境。
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出版历程
修回日期:  2003-04-14
刊出日期:  2004-05-31

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