| 江西修水县莲花芯Cu-Mo-W矿床的辉钼矿Re-Os年龄及地质意义 |
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| 引用本文： | 张勇,潘家永,马东升,刘国奇,韦新亚,张雷雷,马崇军,杨春鹏.江西修水县莲花芯Cu-Mo-W矿床的辉钼矿Re-Os年龄及地质意义[J].矿床地质,2016,35(4):867-880. |
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| 作者姓名： | 张勇 潘家永 马东升 刘国奇 韦新亚 张雷雷 马崇军 杨春鹏 |
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| 作者单位： | 1. 南京大学,江苏南京210046;东华理工大学,江西南昌330013;2. 东华理工大学,江西南昌,330013;3. 南京大学,江苏南京,210046;4. 江苏省核工业二七二地质大队,江苏南京,210000;5. 中国冶金地质总局山东正元地质勘查院,山东济南,250101 |
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| 基金项目： | 本文获得国家重点基础研究发展计划（973计划）项目（编号：2014CB440904）、国家自然科学基金项目（编号：41262002和41403031）、中国地调局项目（编号：科[2014]04-025-024）和国家自然科学基金重点基金项目（编号：U1403292）联合资助 |
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| 摘 要： | 通过对修水县莲花芯石英脉型Cu-Mo-W矿床的辉钼矿进行Re-Os同位素测年,获得的w(普Os)为0.0083×10-9~0.1535×10-9,加权的平均年龄为(157.7±2.8)Ma,计算得到辉钼矿Re-Os等时线年龄为(158.6±2.0)Ma(MSWD=0.63),与加权平均年龄在误差范围内一致,可代表辉钼矿的形成年龄,成矿作用时代晚于赋矿围岩晋宁期黑云母花岗岩的成岩时代。对比区域成岩成矿作用时代,认为该矿床可能与燕山期花岗岩岩浆活动有关,是赣北大规模钨多金属成矿序列演化的产物之一,属于华南中生代第二次大规模成矿作用(165~135 Ma)的产物。
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| 关 键 词： | 地球化学 Re-Os定年 岩浆期后热液矿床 地质意义 莲花芯Cu-Mo-W矿床 修水县 |
| 收稿时间： | 2/2/2015 12:00:00 AM |
| 修稿时间： | 2015/12/22 0:00:00 |
Re-Os isotope dating of molybdenite from Lianhuaxin Cu-Mo-W deposit in Xiushui County of Jiangxi Province and its geological significance |
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| ZHANG Yong,PAN JiaYong,MA DongSheng,LIU GuoQi,WEI XinY,Zhang LeiLei,Ma ChongJun and YANG ChunPeng.Re-Os isotope dating of molybdenite from Lianhuaxin Cu-Mo-W deposit in Xiushui County of Jiangxi Province and its geological significance[J].Mineral Deposits,2016,35(4):867-880. |
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| Authors: | ZHANG Yong PAN JiaYong MA DongSheng LIU GuoQi WEI XinY Zhang LeiLei Ma ChongJun and YANG ChunPeng |
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| Affiliation: | Nanjing University, Nanjing 210046, Jiangsu, China;East China University of Technology, Nanchang 330013, Jiangxi, China,East China University of Technology, Nanchang 330013, Jiangxi, China,Nanjing University, Nanjing 210046, Jiangsu, China,East China University of Technology, Nanchang 330013, Jiangxi, China,East China University of Technology, Nanchang 330013, Jiangxi, China,No. 272 Geological Party of Nuclear Industry in Jiangsu Province, Nanjing 210000, Jiangxi, China,Shandong Zhengyuan Geological Exploration Institute, China Metallurgical Geology Bureau, Jinan 250101, Shandong, ChinaEast China University of Technology, Nanchang 330013, Jiangxi, China and 1. Nanjing University, Nanjing 210046, Jiangsu, China;2. East China University of Technology, Nanchang 330013, Jiangxi, China;3. No. 272 Geological Party of Nuclear Industry in Jiangsu Province, Nanjing 210000, Jiangxi, China;4. Shandong Zhengyuan Geological Exploration Institute, China Metallurgical Geology Bureau, Jinan 250101, Shandong, China |
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| Abstract: | The Lianhuaxin Cu-Mo-W deposit is a postmagmatic hydrothermal Cu-Mo-W deposit in nonthwest Jiangxi Province. Re-Os isotopic dating of 5 molybdenite samples from the mineralized quartz veins of the Lianhuaxin deposit yielded a precise isochron age of (158.6±2.0) Ma and a Tukey''s Biweight average model age of (157.7±2.8) Ma. The Os content of molybdnite is (0.0083~0.1535)×10-9, and the MSWD is 0.63. The Lianhuaxin molybdenum deposit formed in the mid-late Middle Jurassic period, and the ore-forming age corresponds to the second mineralization stage (165~135 Ma) in the Late Jurassic of South China, consistent with the tungsten-tin mineralization around 160 Ma within the region. The molybdenum mineralization of the Lianhuaxin Cu-Mo-W deposit in north Jiangxi Province occurred in 165~135 Ma,. |
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| Keywords: | geochemistry Re-Os Isotope dating postmagmatic hydrothermal deposit geological significance Lianhuaxin Cu-Mo-W deposit Xiushui County |
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