地质通报2017，Vol.36Issue(2)：459-465,7.
湖南塔山花岗岩SHRIMP锆石U-Pb年龄及其地质意义
SHRIMP zircon U-Pb age of Tashan granitic plu-ton from Hu'nan Province and its geological significance
摘要
Abstract
Tashan granite pluton covering an area of 200km2 is an EW-trending batholith which is located at the eastern end of the Yangmingshan-Tashan tectomagmatic belt in southern Hunan. The pluton intruded into the Paleozoic strata and its interface is in-clined to the wall rock, with the dip angle ranges from 30° to 50°. The pluton is composed four periods of pulsation intrusive rock bodies and its main lithology is biotite adamellite. The SHRIMP zircon U-Pb age of the second-stage pluton is 218±3Ma and the third is 215±3Ma, as measured by the Beijing SHRIMP Center of Chinese Academy of Geological Sciences. It is suggested that the Tashan pluton was formed in the Late Triassic period, and the age gap with the neighboring intrusive bodies is 3~5Ma, suggesting that the EW-trending Yangmingshan-Tashan tectomagmatic belt was probably formed in Indo-Chinese epoch. This area is rich in tungsten, tin, copper, lead and zinc polymetallic deposits and has bright future for ore prospect in that the mineralization in the Nan-ling region occurred not only in Yanshanian epoch but also in Indo-Chinese epoch.关键词
花岗岩/SHRIMP锆石U-Pb年龄/湖南塔山/地质意义Key words
granite/SHRIMP zircon U-Pb age/Tashan,Hu'nan Province/geological implications分类
天文与地球科学引用本文复制引用
郭爱民,陈必河,陈剑锋,杜云,郑正福,周超,田磊,樊晖..湖南塔山花岗岩SHRIMP锆石U-Pb年龄及其地质意义[J].地质通报,2017,36(2):459-465,7.基金项目
中国地质调查局项目《湖南上堡地区矿产远景调查》(编号:1212011120809)、《湘东地区花岗岩与成矿关系研究》(编号:1212011220520)和《南岭成矿带中西段地质矿产调查》(编号:121201009000150002) （编号:1212011120809）
