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. 岩石圈演化国家重点实验室
Geochronological Constraint on the Evolution of the Aktyuz Terrane, Kyrgyz North Tianshan, and the Fate of the Taldybulak Levoberezhny Gold Deposit

文献类型：期刊论文

作者Xi, Wei2,5,6; Li, Nuo5,6; Xia, Xiaohong3,4; Ling, Xiaoxiao1; Wu, Yanshuang5,6
刊名FRONTIERS IN EARTH SCIENCE
出版日期2021-05-20
卷号09页码:16
关键词zircon U-Pb age Lu-Hf isotope Aktyuz terrane Kyrgyz North Tianshan Taldybulak Levoberezhny gold deposit
DOI10.3389/feart.2021.664361
英文摘要The Aktyuz Terrane in Kyrgyz North Tianshan is of particular interest due to the occurrence of high and ultrahigh pressure (HP-UHP) rocks and it containing the third largest gold deposit in Kyrgyz North Tianshan, i.e., Taldybulak Levoberezhny (abbreviated to Taldybulak Lev.). To constrain the ages of the host Kemin Complex and its auriferous monzogranite porphyry, detailed zircon U-Pb dating [by laser ablation inductively coupled plasma-mass spectrometry (LA-ICPMS) and secondary ion mass spectroscopy (SIMS)] and Lu-Hf isotopic analyses were carried out. The intensively altered auriferous monzogranite porphyry yielded two weighted mean ages of 444 +/- 3 Ma (n = 14, mean squared weighted deviation (MSWD) = 0.49, by LA-ICPMS) and 440 +/- 5 Ma (n = 8, MSWD = 0.82, by SIMS) that are indistinguishable within error ranges. Such ages are consistent with a previously reported sulfide Re-Os isochron age of 434 +/- 18 Ma, supporting a Silurian porphyry gold mineralization. The granitic gneiss yielded a protolith age of 773 +/- 7 Ma (n = 7, MSWD = 0.04) and two metamorphic ages of 514 +/- 4 Ma (n = 8, MSWD = 0.09) and 483 +/- 3 Ma (n = 11, MSWD = 0.04). Detrital zircons from one fuchsite schist sample yielded highly variable ages from 729 +/- 13 Ma to 2,463 +/- 30 Ma, with 12 data points weighted at 740 +/- 5 Ma (MSWD = 0.95). The metamorphic overgrowth yielded a weighted mean age of 460 +/- 4 Ma (n = 4, MSWD = 0.15). Detrital zircons in the migmatitic amphibolite are aged from 788 +/- 7 Ma to 3,447 +/- 32 Ma, with two major concentrations at 941 +/- 7 Ma (n = 13, MSWD = 0.95) and 794 +/- 5 Ma (n = 8, MSWD = 0.19). The metamorphic overgrowth yielded an average age of 555 +/- 4 Ma (n = 8, MSWD = 0.65). The detrital and xenocryst zircons, and evolved epsilon Hf(t) values (-20.9 to -7.8) and old two-stage Hf model ages (1,367-3,159 Ma), revealed the presence of a Precambrian basement that may be dated back to the Archean Eon. The two metamorphic ages may correlate with oceanic subduction and continental collision, respectively.
WOS关键词PB ZIRCON GEOCHRONOLOGY ; KOKCHETAV METAMORPHIC BELT ; RE-OS PYRITE ; TIEN-SHAN ; U-PB ; LU-HF ; CAMBRIAN METALLOGENY ; TECTONIC EVOLUTION ; CONTINENTAL-CRUST ; TRACE-ELEMENT
资助项目National Key Research and Development Program of China[2017YFC0601202] ; Xinjiang Outstanding Youth Scientific Grant[2020Q006]
WOS研究方向Geology
语种英语
WOS记录号WOS:000657271700001
出版者FRONTIERS MEDIA SA
资助机构National Key Research and Development Program of China ; National Key Research and Development Program of China ; Xinjiang Outstanding Youth Scientific Grant ; Xinjiang Outstanding Youth Scientific Grant ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Xinjiang Outstanding Youth Scientific Grant ; Xinjiang Outstanding Youth Scientific Grant ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Xinjiang Outstanding Youth Scientific Grant ; Xinjiang Outstanding Youth Scientific Grant ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Xinjiang Outstanding Youth Scientific Grant ; Xinjiang Outstanding Youth Scientific Grant
源URL[http://ir.iggcas.ac.cn/handle/132A11/102005]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Li, Nuo; Xia, Xiaohong
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Sichuan Geol & Mineral Resources Grp Co Ltd, Chengdu, Peoples R China
4.Altynken Ltd Liabil Co, Zijin Min Grp, Bishkek, Kyrgyzstan
5.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Xinjiang Res Ctr Mineral Resources, Urumqi, Peoples R China
6.Xinjiang Key Lab Mineral Resources & Digital Geol, Urumqi, Peoples R China
推荐引用方式
GB/T 7714		 Xi, Wei,Li, Nuo,Xia, Xiaohong,et al. Geochronological Constraint on the Evolution of the Aktyuz Terrane, Kyrgyz North Tianshan, and the Fate of the Taldybulak Levoberezhny Gold Deposit[J]. FRONTIERS IN EARTH SCIENCE,2021,09:16.
APA Xi, Wei,Li, Nuo,Xia, Xiaohong,Ling, Xiaoxiao,&Wu, Yanshuang.(2021).Geochronological Constraint on the Evolution of the Aktyuz Terrane, Kyrgyz North Tianshan, and the Fate of the Taldybulak Levoberezhny Gold Deposit.FRONTIERS IN EARTH SCIENCE,09,16.
MLA Xi, Wei,et al."Geochronological Constraint on the Evolution of the Aktyuz Terrane, Kyrgyz North Tianshan, and the Fate of the Taldybulak Levoberezhny Gold Deposit".FRONTIERS IN EARTH SCIENCE 09(2021):16.

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。