IGGCAS OpenIR  > 矿产资源研究院重点实验室
Zircon U-Pb geochronology and geochemistry of Early-Middle Jurassic intrusions in the Daheishan ore district, NE China: Petrogenesis and implications for Mo mineralization
Guo, Yunpeng1,2; Zeng, Qingdong1,2,3; Yang, Jinhui1,2,3; Guo, Feng4; Guo, Weikang1,2; Liu, Jianming1,2,3
2018-10-01
发表期刊JOURNAL OF ASIAN EARTH SCIENCES
ISSN1367-9120
卷号165页码:59-78
摘要Two types of Jurassic intrusive rocks have been recognized in the Daheishan ore district, northeastern China, according to new SIMS zircon U-Pb ages, whole-rock major and trace element abundances, and Sr-Nd-Pb isotopic compositions. The first type is represented by biotite granite and monzogranite, with zircon U-Pb dating yielding ages from 182 to 175 Ma. These rocks are high-K calc-alkaline series, and span from metaluminous to weakly peraluminous. They exhibit enrichment in large ion lithophile elements (LILEs) and depletion in high field strength elements (HFSEs), with significant negative Eu anomalies, low (La/Yb)(N) and Sr/Y ratios. They have low (Sr-87/Sr-86); ratios of 0.70202-0.70474, positive epsilon(Nd)(t) values of 1.7-2.3, and Nd model ages (T-DM2) of 826-771 Ma as well as ((206)pb/(204)pb)(i) values of 18.400-18.494. These arc-like geochemical characteristics suggest that the Early Jurassic intrusions were formed by the partial melting of a mixture of dominated juvenile component and pre-existing crust in a subduction zone setting. The second type is represented by diorite and granodiorite, with zircon U-Pb ages of 172-170 Ma. These Middle Jurassic intrusive rocks are high-K calc-alkaline and mainly metaluminous, with high Mg-# (> 29) and elevated (La/Yb)(N) and Sr/Y ratios. They display similar whole-rock Sr-Nd-Pb isotopic compositions ((Sr-87/Sr-86)(i) = 0.70432-0.70480, epsilon(Nd)(t) = 1.7-2.3, (Pb-206/Pb-204)(i) = 18.3016-18.4531) to the Early Jurassic granites. Their adakitic geochemical compositions suggest that they formed at pressures greater than 15 kbar by the partial melting of thickened lower crust with a juvenile component. We further propose that the tectonic setting of the Zhangguangcai Range in the Early Jurassic might be a back-arc related to the subduction of the Paleo-Pacific Plate, and that subduction stopped temporarily in the Middle Jurassic due to the presence of over-thickened continental crust. The prolonged Jurassic adakitic magmatism and concomitant fluid activities may have played important roles in the formation of the porphyry Mo deposits in the Daheishan ore district.
关键词SIMS zircon U-Pb geochronology Sr-Nd-Pb isotopes Jurassic magmatism Daheishan ore district
DOI10.1016/j.jseaes.2018.04.033
资助者National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research Project of China ; National Key Research Project of China ; Major State Basic Research Program of China ; Major State Basic Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research Project of China ; National Key Research Project of China ; Major State Basic Research Program of China ; Major State Basic Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research Project of China ; National Key Research Project of China ; Major State Basic Research Program of China ; Major State Basic Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research Project of China ; National Key Research Project of China ; Major State Basic Research Program of China ; Major State Basic Research Program of China
关键词[WOS]MESOZOIC VOLCANIC-ROCKS ; LOWER CONTINENTAL-CRUST ; ND ISOTOPIC EVIDENCE ; ASIAN OROGENIC BELT ; NORTH CHINA ; JILIN PROVINCE ; TECTONIC IMPLICATIONS ; MOLYBDENUM DEPOSITS ; TRACE-ELEMENT ; NORTHEASTERN CHINA
语种英语
资助项目National Natural Science Foundation of China[41390443] ; National Key Research Project of China[2017YFC0601306] ; Major State Basic Research Program of China[2013 CB429804]
资助者National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research Project of China ; National Key Research Project of China ; Major State Basic Research Program of China ; Major State Basic Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research Project of China ; National Key Research Project of China ; Major State Basic Research Program of China ; Major State Basic Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research Project of China ; National Key Research Project of China ; Major State Basic Research Program of China ; Major State Basic Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research Project of China ; National Key Research Project of China ; Major State Basic Research Program of China ; Major State Basic Research Program of China
WOS研究方向Geology
WOS类目Geosciences, Multidisciplinary
WOS记录号WOS:000449447300004
出版者PERGAMON-ELSEVIER SCIENCE LTD
引用统计
文献类型期刊论文
条目标识符http://ir.iggcas.ac.cn/handle/132A11/89424
专题矿产资源研究院重点实验室
通讯作者Guo, Yunpeng
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Marginal Sea Geol, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式
GB/T 7714
Guo, Yunpeng,Zeng, Qingdong,Yang, Jinhui,et al. Zircon U-Pb geochronology and geochemistry of Early-Middle Jurassic intrusions in the Daheishan ore district, NE China: Petrogenesis and implications for Mo mineralization[J]. JOURNAL OF ASIAN EARTH SCIENCES,2018,165:59-78.
APA Guo, Yunpeng,Zeng, Qingdong,Yang, Jinhui,Guo, Feng,Guo, Weikang,&Liu, Jianming.(2018).Zircon U-Pb geochronology and geochemistry of Early-Middle Jurassic intrusions in the Daheishan ore district, NE China: Petrogenesis and implications for Mo mineralization.JOURNAL OF ASIAN EARTH SCIENCES,165,59-78.
MLA Guo, Yunpeng,et al."Zircon U-Pb geochronology and geochemistry of Early-Middle Jurassic intrusions in the Daheishan ore district, NE China: Petrogenesis and implications for Mo mineralization".JOURNAL OF ASIAN EARTH SCIENCES 165(2018):59-78.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Guo, Yunpeng]的文章
[Zeng, Qingdong]的文章
[Yang, Jinhui]的文章
百度学术
百度学术中相似的文章
[Guo, Yunpeng]的文章
[Zeng, Qingdong]的文章
[Yang, Jinhui]的文章
必应学术
必应学术中相似的文章
[Guo, Yunpeng]的文章
[Zeng, Qingdong]的文章
[Yang, Jinhui]的文章
相关权益政策
暂无数据
收藏/分享
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit Add to Technorati
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。