中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 中国科学院矿产资源研究重点实验室
Petrogenesis and tectonic setting of Early Cretaceous granodioritic porphyry from the giant Rongna porphyry Cu deposit, central Tibet

文献类型：期刊论文

作者Zhang, Xia-Nan1,2,3; Li, Guang-Ming1,4; Qin, Ke-Zhang1,4; Lehmann, Bernd3; Li, Jin-Xiang4,5; Zhao, Jun-Xing1; Cao, Ming-Jian1; Zou, Xin-Yu1,2
刊名JOURNAL OF ASIAN EARTH SCIENCES
出版日期2018-08-01
卷号161页码:74-92
关键词Porphyry deposit High sulfidation epithermal deposit Petrogenesis Rongna Duolong Tibet
ISSN号1367-9120
DOI10.1016/j.jseaes.2018.05.006
文献子类Article
英文摘要The Rongna Cu-(Au) deposit is a recently discovered giant low-grade composite porphyry-high sulfidation epithennal system in the Duolong ore district of central Tibet. We present zircon U-Pb ages, bulk-rock geo-chemical and Sr-Nd isotope data, as well as zircon Hf-O isotope data to constrain the petrogenesis of the Rongna granodioritic porphyry, on which the ore system is centered. Secondary ion mass spectrometry (SIMS) zircon U-Pb data for two samples yielded ages of 118.7 +/- 0.9 Ma and 117.1 +/- 0.9 Ma, respectively. The granodioritic porphyry is of high-K talc-alkaline and magnetite-series affinity, with enrichment of light rare earth elements (LREEs) and large-ion lithophile elements (e.g., Rb, Pb, and K), and depletion of high-field strength elements (e.g., Ta, Nb, and Ti), typical of the geochemical signature of arc magmas. The Rongna granodioritic porphyry has initial Sr isotopic ratios of 0.7060-0.7099, and epsilon(Nd)(t) values of -5.7 to -1.7 with T-DM (Nd) of 983-1900 Ma. The zircons have relatively narrow Hf-O isotopic compositions (epsilon(Hf)(t) = + 3.30- + 6.43; 8180 = + 5.94- + 6.96 parts per thousand), indicating the involvement of old crustal materials. Our data suggest that the Rongna granodioritic porphyry likely evolved by fractional crystallization from a hybrid magma of mantle-derived mafic melts and lower crustal felsic melts during a period of magmatic flare-up following flat-slab subduction.
WOS关键词ZIRCON U-PB ; NUJIANG METALLOGENIC BELT ; AU DEPOSIT ; COPPER-DEPOSIT ; VOLCANIC-ROCKS ; HYDROTHERMAL ALTERATION ; ISOTOPIC COMPOSITIONS ; NORTHWESTERN TIBET ; SOUTHERN QIANGTANG ; MASS-SPECTROMETRY
WOS研究方向Geology
语种英语
WOS记录号WOS:000435062400006
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构Natural Science Foundation Project(41472074) ; Natural Science Foundation Project(41472074) ; University of the Chinese Academy of Sciences(UCAS[2015]137) ; University of the Chinese Academy of Sciences(UCAS[2015]137) ; Natural Science Foundation Project(41472074) ; Natural Science Foundation Project(41472074) ; University of the Chinese Academy of Sciences(UCAS[2015]137) ; University of the Chinese Academy of Sciences(UCAS[2015]137) ; Natural Science Foundation Project(41472074) ; Natural Science Foundation Project(41472074) ; University of the Chinese Academy of Sciences(UCAS[2015]137) ; University of the Chinese Academy of Sciences(UCAS[2015]137) ; Natural Science Foundation Project(41472074) ; Natural Science Foundation Project(41472074) ; University of the Chinese Academy of Sciences(UCAS[2015]137) ; University of the Chinese Academy of Sciences(UCAS[2015]137)
源URL[http://ir.iggcas.ac.cn/handle/132A11/88187]  
专题地质与地球物理研究所_中国科学院矿产资源研究重点实验室
通讯作者Li, Guang-Ming
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Tech Univ Clausthal, Mineral Resources, Adolph Roemer Str 2A, D-38678 Clausthal Zellerfeld, Germany
4.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100085, Peoples R China
5.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100085, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Xia-Nan,Li, Guang-Ming,Qin, Ke-Zhang,et al. Petrogenesis and tectonic setting of Early Cretaceous granodioritic porphyry from the giant Rongna porphyry Cu deposit, central Tibet[J]. JOURNAL OF ASIAN EARTH SCIENCES,2018,161:74-92.
APA Zhang, Xia-Nan.,Li, Guang-Ming.,Qin, Ke-Zhang.,Lehmann, Bernd.,Li, Jin-Xiang.,...&Zou, Xin-Yu.(2018).Petrogenesis and tectonic setting of Early Cretaceous granodioritic porphyry from the giant Rongna porphyry Cu deposit, central Tibet.JOURNAL OF ASIAN EARTH SCIENCES,161,74-92.
MLA Zhang, Xia-Nan,et al."Petrogenesis and tectonic setting of Early Cretaceous granodioritic porphyry from the giant Rongna porphyry Cu deposit, central Tibet".JOURNAL OF ASIAN EARTH SCIENCES 161(2018):74-92.

入库方式： OAI收割

来源：地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

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。