岩矿测试2012，Vol.31Issue(3)：525-529,5.
赣南-湘东湖南洞岩体的锆石U-Pb年代学研究及其对加里东构造背景的意义
Zircon U-Pb Dating of the Hunandong-granite and Its Caledonian Tectonic Significance, South Jiangxi-East Hunan Province
摘要
Abstract
Hunandong granite located on the border of Hunan and Jiangxi, intruded into the Linyang granite. Based on the investigation of field geology, detailed zircon U-Pb age measurements were done on the Hunandong granite. These zircons have high Th/U ratio with zonal structure, which indicate magmatic zircons. The zircon U-Pb age is (447. 2 ± 1.8) Ma, which shows that the Hunandong granite was formed in the late Ordovician period, reflecting the important stage of Caledonian magmatism. According to the result together with other information published, the authors think that the formation of Hunandong granite may be related to the amalgamation and collision between Cathaysian block and Yantze block, providing strong evidence for further understanding the Caledonian magmatism and its geodynamic process in South China.关键词
湖南洞岩体/LA-MC-ICPMS锆石U-Pb定年/加里东Key words
Hunandong granite/ LA-MC-ICPMS zircon U-Pb dating/ Caledonian分类
天文与地球科学引用本文复制引用
王永磊,陈振宇,陈郑辉,侯可军,赵正,许建祥,张家菁,曾载淋..赣南-湘东湖南洞岩体的锆石U-Pb年代学研究及其对加里东构造背景的意义[J].岩矿测试,2012,31(3):525-529,5.基金项目
中国地质大调查项目“南岭地区岩浆岩成矿专属性研究”(1212011120989) （1212011120989）
“我国重要矿产和区域成矿规律研究”课题(1212010633903) （1212010633903）
国家深部探测技术与实验研究专项“南岭成矿带地壳岩浆系统结构探测实验”(SinoProbe0301) （SinoProbe0301）
“南岭于都—赣县矿集区立体探测技术与深部成矿预测示范”课题(201011048) （201011048）
