岩矿测试2012，Vol.31Issue(4)：699-704,6.
赣南部分岩体的锆石铀-铅同位素年代学研究及其对成岩成矿机制的再认识
U-Pb Isotopic Age and a Further Understanding of the Ore-forming Mechanism in Granite from the Southern Jiangxi Province
摘要
Abstract
Magmatic rocks in the Southern Jiangxi are widely distributed. The diagenetic ages of some rocks are clear, but are still in dispute for others. The U-Pb ages of the Tianxin, Lujing, Shuitou, Baie, Gaoshanjiao, Hanfang, Yangcun, Hunandong, Zhulanbu, Linyang, Dafuzu, Youshan, Huangsha, Yangbu, Wantian and other granites were obtained by using Laser Ablation-Multicollector Inductively Coupled Plasma-Mass Spectrometry (LA-MC-ICPMS). The data show that these granites did not all intrude in the Yanshanian stage. Although the Tianxin, Lujing, Shuitou, Baie, Hanfang, Yangcun and some granites intruded mainly in the Yanshanian stage, they hosted some earlier zircons, which means most of the rocks experienced a 6 - 10 Ma crystallization rock-forming history. By comparing with K-Ar and Rb-Sr geochronologies, the granites in the Southern Jiangxi mainly intruded during the Jurassic era. However, areas of Indosinian rocks are substantial, in addition to there being more and more petrogenic information in the early Cambrian and Caledonian eras. All the research results indicate that granites in the Southern Jiangxi experienced a long term evolution and many of them were formed in multiple stages. Although Caledonian rocks were ignored previously since they had no relationship with W deposits, they can be primary rocks for ion-adsorption type rare earth element deposits.关键词
锆石U-Pb同位素定年/赣南岩体/成岩时代/成岩机制Key words
zircon U-Pb isotope dating/ granite in Southern Jiangxi Province/ petrogenic age/ rock-forming mechanism分类
天文与地球科学引用本文复制引用
王登红,秦燕,陈振宇,侯可军..赣南部分岩体的锆石铀-铅同位素年代学研究及其对成岩成矿机制的再认识[J].岩矿测试,2012,31(4):699-704,6.基金项目
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"课题(SinoProbe0301) （SinoProbe0301）
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）
"我国三稀金属资源战略调查"项目(1212011120354) （1212011120354）
"我国重要矿产和区域成矿规律研究"项目(1212010633903) （1212010633903）
