摘要
九仙汤侵入体位于江西九岭复式岩基内,前人认为属燕山期花岗岩。笔者在该区进行1∶25万上高县幅区域地质调查时,利用TIMS锆石U-Pb定年方法对九仙汤英云闪长岩进行了同位素年龄测定,结果表明九仙汤侵入体形成时代为(763±1)Ma,属新元古代花岗岩。
Located in the Jiuling complex batholith, the Jiuxiantang intrusion is regarded as the Yanshanian intrusion according to the previous researches. Using TIMS zircon U-Pb dating method, the author measured the isotope age of quartz-biotite-diorite from the Jiuxiantang intrusion during the regional geological investigation of 1： 250000 scale Shanggao county sheet. The dating result shows that the formation age of the Jiuxiantang intrusion is 763 ＋ 1Ma, belonging to the Neoproterozoic granite intrusion.
出处
《资源调查与环境》
2008年第4期252-256,共5页
Resources Survey & Environment
基金
国土资源大调查项目(编号200113000011)资助
关键词
锆石U—Pb定年
九仙汤侵入体
九岭南缘
zircon U-Pb dating
Jiuxiantang intrusion
Southern margin of Jiuling Mountain range
