[1]范飞鹏,肖惠良,陈乐柱,等. 南岭东段黄峰寨岩体SHRIMP锆石U-Pb年龄及地质意义[J].华东地质,2016,37(03):166-173.[doi:10.16788/j.hddz.32-1865/P.2016.03.002]
 FAN Fei-peng,XIAO Hui-liang,CHEN Le-zhu,et al. SHRIMP zircon U-Pb dating of the Huangfengzhai pluton in eastern Nanling and its geological implications[J].East China Geology,2016,37(03):166-173.[doi:10.16788/j.hddz.32-1865/P.2016.03.002]
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 南岭东段黄峰寨岩体SHRIMP锆石U-Pb年龄及地质意义()
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《华东地质》[ISSN:2096-1871/CN:32-1865/P]

卷:
37
期数:
2016年03期
页码:
166-173
栏目:
基础地质
出版日期:
2016-09-15

文章信息/Info

Title:
 SHRIMP zircon U-Pb dating of the Huangfengzhai pluton in eastern Nanling and its geological implications
文章编号:
2096-1871(2016)03-166-08
作者:
 范飞鹏肖惠良陈乐柱蔡逸涛李海立鲍晓明周 延
 (南京地质矿产研究所,南京 210016)
Author(s):
 FAN Fei-peng XIAO Hui-liang CHEN Le-zhu CAI Yi-taoLi Hai-liBAO Xiao-ming ZHOU Yan
 (Nanjing Institute of Geology and Mineral Resource,Nanjing 210016, China)
关键词:
 南岭东段 黄峰寨岩体 印支期 SHRIMP 锆石 U-Pb年龄 Hf同位素
Keywords:
 theeastern Nanling Huangfengzhai pluton Indosinian SHRIMP zircon U-Pb age Hf isotope
分类号:
P558.12
DOI:
10.16788/j.hddz.32-1865/P.2016.03.002
文献标志码:
A
摘要:
黄峰寨岩体位于南岭钨锡多金属成矿带的东段,对该岩体中的石英二长岩进行SHRIMP锆石U-Pb年龄测定、岩石学和地球化学研究。石英二长岩的SHRIMP锆石U-Pb年龄为231±3 Ma,属中三叠世晚期。岩石学和地球化学特征表明,该岩体具有高硅、富铝、高钾、中碱、高钙的特征,属高钾钙碱性系列弱过铝质S型花岗岩类; 微量元素Sr、Ba、Nb、P、Ti强烈亏损,Rb、Th、Ce、Zr、Sm相对富集; 稀土元素总量高,轻稀土富集,轻、重稀土分异明显,Eu中等负异常; Hf(t)为-15.25~-2.88,Hf两阶段模式年龄值为1.87~2.22Ga,表明黄峰寨岩体为上地壳底部基性岩部分熔融的产物,推测该岩体可能形成于同碰撞构造环境。
Abstract:
The Huangfengzhai pluton is located in the eastern sectionof tungsten-tin polymetallic metallogenic belt in the Nanling region. Thisstudy carried out SHRIMP zircon U-Pb dating and lithological and geochemical anlyzses for quartz monazites from the Huangfengzhai pluton. The results show thata zircon U-Pb age of quartz monzonite from the Huangfengzhai pluton is 231±3 Ma, belonging to late Middle Triassic. Lithological, mineralogical and geochemicalanalyses suggest that the pluton is rich in Si, Al and Ca, with medium alkali,indicating that the pluton belongs to high-K, calc-alkaline series, weakly-perluminous S-type granitoids. The pluton is also depleted in Sr, Ba, Nb, P and Ti, but relatively enriched in Rb, Th, Ce, Zr and Sm, with high ΣREE content, distinct LREE and HREE differentiation, and weak negative Eu anomalies. Zircon εHf(t)values range from -15.25 to -2.88 and Hf two-stage model age values are 1.87~2.22 Ga, indicating that the Huangfengzhai pluton was derived from partial melting of mafic rocks at the bottom of upper crust. It can be inferred that the Huangfengzhai pluton might form at a syncollosion tectonic setting.

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备注/Memo

备注/Memo:
收稿日期:2016-01-03 改回日期:2016-03-17
责任编辑:谭桂丽基金项目:中国地质调查局地质调查项目“江西竹山-广东澄江地区钨锡多金属矿远景调查”(项目编号:1212011120813)、“广东始兴南山坑-良源地区钨锡多金属矿评价”(项目编号:1212011120811)、“广东始兴-连平地区钨钼多金属矿调查评价”(项目编号:1212010881305)和“湘赣粤相邻地区钨矿远景调查”(项目编号:1212010533003)。
第一作者简介:范飞鹏,1982年生,男,硕士,高级工程师,主要从事矿产资源勘查和矿床学研究工作。
更新日期/Last Update: 2016-09-19