Thermal-tectonic history of the Baogutu porphyry Cu deposit, West Junggar as constrained from zircon U-Pb, biotite Ar/Ar and zircon/apatite (U-Th)/He dating

doi:10.1016/j.jseaes.2013.05.026

	Thermal-tectonic history of the Baogutu porphyry Cu deposit, West Junggar as constrained from zircon U-Pb, biotite Ar/Ar and zircon/apatite (U-Th)/He dating
	Li, Guang-Ming 1; Cao, Ming-Jian 1,2; Qin, Ke-Zhang 1; Evans, Noreen J.3,4; McInnes, Brent I. A.4; Liu, Yong-Sheng 5
刊名	JOURNAL OF ASIAN EARTH SCIENCES
	2014-01-05
卷号	79 页码:741-758
关键词	Western Junggar Baogutu porphyry copper deposit Zircon U-Pb dating Ar/Ar dating Zircon (U-Th)/He dating Apatite (U-Th)/He dating Thermal-tectonic history
ISSN号	1367-9120
DOI	10.1016/j.jseaes.2013.05.026
文献子类	Article
英文摘要	Understanding postmineralization tectonic movements in porphyry deposits, is critical to interpreting the complete thermal-tectonic history. This study reports new zircon U-Pb ages, hydrothermal biotite Ar-39/Ar-40 age, and zircon and apatite (U-Th)/He ages from the Baogutu porphyry copper deposit, which, in conjunction with pre-existing geochronology and thermochronology and inverse modeling simulations, constrain the thermal-tectonic history of the deposit. Zircon LA-ICP-MS U-Pb concordia ages indicate a Late Carboniferous age of 320.1 +/- 2.2 Ma for the diorite complex and 309.8 +/- 2.2 Ma for the mineralized granodiorite porphyry. Hydrothermal biotite selected from a quartz-biotite-chalcopyrite vein yields a plateau age of 311.0 +/- 1.8 Ma which agrees with the age of the granodiorite porphyry and a previously reported molybdenite Re-Os age, and suggests that hydrothermal fluid circulated about 310 m.y. ago. Diorite and granodiorite porphyry yield weighted mean zircon (U-Th)/He ages of 200.6 +/- 5.7 Ma and 241.1 +/- 8.1 Ma, respectively, with ages ranging from 221.0 Ma to 174.3 Ma and 225.9 to 261.6 Ma. Weighted mean diorite and granodiorite porphyry apatite (U-Th)/He ages of 87.4 +/- 2.3 Ma and 120.0 +/- 4.2 Ma were obtained with ages ranging from 68.9 Ma to 100.8 Ma, and from 91.0 Ma to 152.0 Ma, respectively. The wide range of zircon (U-Th)/He ages may be due to the combined effects of U and Th zonation and radiation damage, and radiation damage effect may also account for the wide range of apatite (U-Th)/He ages. The combined effects of depth and cooling due to meteoric water circulation contribute to an older (U-Th)/He age for the granodiorite porphyry, relative to the diorite. A five-episode cooling rate history for the diorite can be deduced by inverse model simulation: fast cooling moderate fast cooling relatively slow cooling-fast cooling again-very slow cooling. The thermal and tectonic history of the wall rock indicates that it suffered significant far-field effects from the Qiangtang-Eurasia and Lhasa-Qiangtang collision, however, no visible thermal effect from the India-Asia collision is observed. (C) 2013 Elsevier Ltd. All rights reserved.
WOS关键词	APATITE FISSION-TRACK ; LA-ICP-MS ; MESOZOIC INTRACONTINENTAL DEFORMATION ; HELIUM DIFFUSION KINETICS ; INDIA-ASIA COLLISION ; CHINESE TIAN-SHAN ; KTB DRILL HOLE ; NORTHWEST CHINA ; RADIATION-DAMAGE ; TIEN-SHAN
WOS研究方向	Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000330605000013
资助机构	Ministry of Land and Resources Comprehensive Research for Typical Mineral Deposits(20089932) ; Ministry of Land and Resources Comprehensive Research for Typical Mineral Deposits(20089932) ; Ministry of Land and Resources Comprehensive Research for Typical Mineral Deposits(20089932) ; Ministry of Land and Resources Comprehensive Research for Typical Mineral Deposits(20089932) ; Ministry of Land and Resources Comprehensive Research for Typical Mineral Deposits(20089932) ; Ministry of Land and Resources Comprehensive Research for Typical Mineral Deposits(20089932) ; Ministry of Land and Resources Comprehensive Research for Typical Mineral Deposits(20089932) ; Ministry of Land and Resources Comprehensive Research for Typical Mineral Deposits(20089932)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/85952]
专题	中国科学院地质与地球物理研究所
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.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.CSIRO Earth Sci & Resource Engn, Kensington, WA 6151, Australia 4.Curtin Univ, Dept Appl Geol Appl Phys, John de Laeter Ctr Isotope Res, Perth, WA 6945, Australia 5.China Univ Geosci, Fac Earth Sci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Peoples R China
推荐引用方式 GB/T 7714	Li, Guang-Ming,Cao, Ming-Jian,Qin, Ke-Zhang,et al. Thermal-tectonic history of the Baogutu porphyry Cu deposit, West Junggar as constrained from zircon U-Pb, biotite Ar/Ar and zircon/apatite (U-Th)/He dating[J]. JOURNAL OF ASIAN EARTH SCIENCES,2014,79:741-758.
APA	Li, Guang-Ming,Cao, Ming-Jian,Qin, Ke-Zhang,Evans, Noreen J.,McInnes, Brent I. A.,&Liu, Yong-Sheng.(2014).Thermal-tectonic history of the Baogutu porphyry Cu deposit, West Junggar as constrained from zircon U-Pb, biotite Ar/Ar and zircon/apatite (U-Th)/He dating.JOURNAL OF ASIAN EARTH SCIENCES,79,741-758.
MLA	Li, Guang-Ming,et al."Thermal-tectonic history of the Baogutu porphyry Cu deposit, West Junggar as constrained from zircon U-Pb, biotite Ar/Ar and zircon/apatite (U-Th)/He dating".JOURNAL OF ASIAN EARTH SCIENCES 79(2014):741-758.