[1]范飞鹏,肖惠良,陈乐柱,等.粤东新寮岽矿区成矿闪长岩类SHRIMP 锆石U-Pb年龄、地球化学特征及地质意义[J].华东地质,2018,39(04):279-289.[doi:10.16788/j.hddz.32-1865/P.2018.04.005]
 FAN Fei-peng,XIAO Hui-liang,CHEN Le-zhu,et al.SHRIMP zircon U-Pb dating and geochemistry of metallogenic dioritoids in the Xinliaodong copper-polymetallic ore district, eastern Guangdong Province, and their geological significance[J].East China Geology,2018,39(04):279-289.[doi:10.16788/j.hddz.32-1865/P.2018.04.005]
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粤东新寮岽矿区成矿闪长岩类SHRIMP 锆石U-Pb年龄、地球化学特征及地质意义()
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《华东地质》[ISSN:2096-1871/CN:32-1865/P]

卷:
39
期数:
2018年04期
页码:
279-289
栏目:
矿床地质
出版日期:
2018-12-01

文章信息/Info

Title:
SHRIMP zircon U-Pb dating and geochemistry of metallogenic dioritoids in the Xinliaodong copper-polymetallic ore district, eastern Guangdong Province, and their geological significance
文章编号:
2096-1871(2018)04-279-11
作者:
范飞鹏1肖惠良1陈乐柱1李海立1康丛轩1刘建雄2 邓中林2李少斌3林耿伟3周 霞3
(1. 中国地质调查局南京地质调查中心,南京 210016; 2. 广东省佛山地质局,佛山 528000; 3. 广东省第二地质大队,汕头 515000)
Author(s):
FAN Fei-peng1 XIAO Hui-liang1 CHEN Le-zhu1 LI Hai-li1Kang Cong-xuan1LIU Jian-xiong2 DENG Zhong-lin2 LI Shao-bin3 LIN Geng-wei3 ZHOU Xia3
(1. Nanjing Center, China Geological Survey,Nanjing 210016, China; 2. Foshan Geological Bureau of Guangdong Province,Guangzhou 528000, China; 3. No.2 Geological Party of Guangdong Province, Shantou 515300, China)
关键词:
SHRIMP 锆石U-Pb定年 地球化学特征 成矿闪长岩 新寮岽铜多金属矿 粤东
Keywords:
SHRIMP zircon U-Pb dating geochemistry mineralized diorite Xinliaodong copper-polymetallic ore district eastern Guangdong Province
分类号:
P588.12
DOI:
10.16788/j.hddz.32-1865/P.2018.04.005
文献标志码:
A
摘要:
新寮岽矿区位于东南沿海火山-侵入岩带西南端,是粤东地区新发现的铜多金属矿床之一。对该矿区与铜矿化关系密切的闪长斑岩和石英闪长岩进行矿物岩石学、SHRIMP锆石 U-Pb定年和地球化学特征研究。结果表明:闪长斑岩和石英闪长岩SHRIMP 锆石U-Pb年龄分别为160.2±1.4 Ma和161.9±1.1 Ma,形成于晚侏罗世,与粤东地区晚侏罗世(161~145 Ma)锡铜成矿期一致; 矿区内各类岩石中均见角闪石、榍石和磁铁矿等; 闪长斑岩属于准铝质高钾钙碱性系列,石英闪长岩属于准铝质高钾钙碱性系列; 闪长斑岩和石英闪长岩富集Rb、U、Ce、Zr、Hf、Y和Nd,亏损K、Sr、Nb、Ta、P和Ti,稀土元素配分曲线呈右倾型,具有明显的中等负Eu异常,轻、重稀土元素分异明显,均具有I型花岗岩的特征; 部分石英闪长岩和矿化石英闪长岩受成矿作用影响,化学成分发生明显变化。
Abstract:
The Xinliaodong copper-polymetallic ore district, located in the southwestern volcanic-intrusive belt of coastal southeast China, is a newly discovered deposit in eastern Guangdong Province. The diorite-porphyry and quartz diorite closely related to copper mineralization were studied using mineral mineralogy, SHRIMP zircon U-Pb dating and lithogeochemical methods. This study yielded a SHRIMP zircon U-Pb age of 160.2±1.4 Ma and 161.9±1.1 Ma for diorite-porphyry and quartz diorite, respectively, suggesting that they formed in late Jurassic. This is consistent with tin-copper mineralization period(late Jurassic, 161~145 Ma)in eastern Guangdong Province. All the rocks in the mining area are found to commonly contain amphibole, sphene and magnetite. Diorite-porphyry belongs to metaluminous, high-K calc-alkaline series. Diorite-porphyry and quartz diorite are enriched in Rb,U,Ce,Zr,Hf,Y and Nd, delepted in K,Sr,Nb,Ta,P and Ti. Right-dipping REE distribution pattern, distinct fractionation between LREE and HREE, and mean negative Eu anomalies are characteristic of I-type granitoid. Some quartz diorite and mineralized quartz diorite were altered chemically by mineralization.

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备注/Memo

备注/Memo:
*收稿日期:2017-09-15 修订日期:2017-12-04 责任编辑:谭桂丽
基金项目:中国地质调查局“广东厚婆坳铜锡多金属矿整装勘查区找矿预测模型构建与找矿预测研究(编号:12120114015701)”和“武夷山成矿带龙泉—上杭地区地质矿产调查(编号:DD20160037)”项目联合资助。
第一作者简介:范飞鹏,1982年生,男,高级工程师,主要从事矿产地质调查、岩石学与矿床学研究。
更新日期/Last Update: 2018-11-13