P619.222 P597
国土资源部国际合作与科技司项目 (编号 95 -0 2 -0 0 8)，科技部 973项目 (编号 2 0 0 2 CB412 60 0 7)资助的成果
XIU Qunye 1),YU Haifeng 2),LI Quan 2),ZUO Guochao 3),LI Jinwen 1),CAO Chengjie 4) 1) Institute of mineral Resources,Chinese Academy of Geological Sciences,Beijing,100037 2) Tianjin Institute of Geology and Mineral Resources,300170 3) Geological Surveying Institute of Gansu Province,Lanzhou,730000 4) Institute of Geomechanics,Chinese Academy of Geological Sciences,Beijing,100081
文中利用颗粒锆石 U- Pb法获得了龙首山岩群奥长花岗岩 2 0 15± 16 Ma的上交点年龄和 4 5 2±16 Ma下交点年龄 ,上交点代表成岩的时代 ,下交点揭示的为广泛发育的加里东期同碰撞热构造事件 ;结合 Sm-Nd、Rb- Sr法的年龄数据和区域地质对比 ,认为龙首山岩群成岩时代属古元古代 ,它反映的是华北陆台除 2 5 0 0 Ma和 180 0 Ma之外 ,又一重要构造 -热事件
修群业,于海峰,李铨,左国朝,李进文,操成杰.2004.龙首山岩群成岩时代探讨[J].地质学报,78(3):366-373.
XIU Qunye ),YU Haifeng ),LI Quan ),ZUO Guochao ),LI Jinwen ),CAO Chengjie ) ) Institute of mineral Resources, Chinese Academy of Geological Sciences, Beijing, ) Tianjin Institute of Geology, Mineral Resources, ) Geological Surveying Institute of Gansu Province, Lanzhou, ) Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing,.2004. Discussion on the Petrogenic Time of Longshoushan Group, Gansu Province[J]. Acta Geologica Sinica,78(3):366-373.
