岩矿测试2012，Vol.31Issue(4)：736-744,9.
赣南燕山期水头岩体的锆石铀-铅年代学研究及其含矿性评价
Zircon U-Pb Dating and Ore-bearing Properties Evaluation of Yanshanian Shuitou Pluton in Southern Jiangxi Province
摘要
Abstract
The Shuitou pluton is one of the composite plutons without accurate dating age in Southern Jiangxi province. Zircon samples taken from the Shuitou pluton were selected for U-Pb dating. The obtained age of (142.7 ± 0.6) Ma confirmed that this granitic pluton belongs to the Yanshanian era and not the Caledonian era as a previous study has reported. Other old ages were also obtained for this pluton (such as Hercynian and Caledonian), which indicates that there were at least three periods of magmatic activity. This study indicates that Shuitou pluton is a composite pluton. Combining the pelrological and geochemical study on this pluton, petrogenesis and ore-bearing properties are illustrated briefly in this paper. The Shuitou pluton mainly consists of biotite granites, which can be attributed to the peraluminous shoshonitic series with a middle fraclionation of light rare earth element (LREE) and heavy rare earth element (HREE), and obvious Eu anomalies. These data indicate that the Shuitou pluton is a composite pluton formed by the result of in-situ-melting of granite. The geochemical data from this study show that this pluton has major mineralization conditions of mother rock for REE deposits.关键词
水头岩体/锆石U-Pb定年/燕山期Key words
Shuitou pluton/ zircon U-Pb dating/ Yanshanian分类
天文与地球科学引用本文复制引用
于扬,陈振宇,陈郑辉,侯可军,赵正,许建祥,张家菁,曾载淋..赣南燕山期水头岩体的锆石铀-铅年代学研究及其含矿性评价[J].岩矿测试,2012,31(4):736-744,9.基金项目
中国地质大调查项目"我国三稀金属资源战略调查"(1212011120354) （1212011120354）
中央级公益性科研院所基本科研业务费专项资金资助项目(K1209) （K1209）
"我国重要矿产和区域成矿规律研究"项目(1212010633903) （1212010633903）
国家深部探测技术与实验研究专项(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）
