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学科主题: 地球科学::地质学
题名: Thermal history of the giant Qulong Cu-Mo deposit, Gangdese metallogenic belt, Tibet: Constraints on magmatic-hydrothermal evolution and exhumation
作者: Zhao, JX (Zhao, Junxing)1, 2, 3; Qin, KZ (Qin, Kezhang)1; Xiao, B (Xiao, Bo)1; McInnes, B (McInnes, Brent)2; Li, GM (Li, Guangming)1; Evans, N (Evans, Noreen)2; Cao, MJ (Cao, Mingjian)1; Li, JX (Li, Jinxiang)4
通讯作者: Qin, KZ
关键词: FISSION-TRACK THERMOCHRONOLOGY ; PORPHYRY COPPER-DEPOSIT ; BENEATH SOUTHERN TIBET ; ZIRCON U-PB ; VOLCANIC-ROCKS ; LOWER CRUST ; (U-TH)/HE THERMOCHRONOLOGY ; EXPERIMENTAL CALIBRATION ; GEOCHEMICAL CONSTRAINTS ; STRUCTURAL EVOLUTION
刊名: GONDWANA RESEARCH
发表日期: 2016
DOI: 10.1016/j.gr.2015.07.005
卷: 36, 期:0, 页:390-409
收录类别: SCI
合作性质: 国际
文章类型: Article
部门归属: 碰撞与隆升
英文摘要: complete thermal history for the Qulong porphyry Cu-Mo deposit, Tibet is presented. Zircon U-Pb geochronology indicates that the mineralization at Qulong resulted from brecciation-veining events associated with the emplacement of a series of intermediate-felsic intrusions. Combined with previously published ages, our results reveal a whole intrusive history of the Qulong composite pluton. Causative porphyries were emplaced at similar to 16.0 Ma as revealed by Ar-40-Ar-39 dating of hydrothermal biotite (15.7 +/- 0.2 Ma) and sericite (15.7 +/- 02 Ma). Zircon and apatite (U-Th)/He (ZHe and AHe) dating of Qulong revealed that both followed similar, monotonic thermal trajectories from 900 degrees C (U-Pb ages: 17.5-15.9 Ma) to 200 degrees C (ZHe: 15.7-14.0 Ma), and that the causative porphyries experienced faster cooling at a maximum rate of greater than 200 degrees C/myr. The Qulong deposit was exhumed between 13.6 Ma and 12.4 Ma (AHe) at an estimated rate of 0.16-0.24 mm/y, which is consistent with previous estimates for other Gangdese Miocene porphyry deposits. Our AHe thermochronology results suggest that neither the Gangdese thrust system, nor the Yadong-Gulu graben affected or accelerated exhumation at the Qulong deposit. (C) 2015 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.
语种: 英语
WOS记录号: WOS:000384702900021
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7632
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beitucheng West Rd 19, Beijing 100029, Peoples R China
2.Curtin Univ, Dept Appl Geol Appl Phys, John Laeter Ctr Isotope Res, TIGeR, Perth, WA 6945, Australia
3.James Cook Univ, Econ Geol Res Ctr EGRU, Sch Earth & Environm Sci, Townsville, Qld 4811, Australia
4.Chinese Acad Sci, Inst Qinghai Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uphft, 4A Datun Rd, Beijing 100085, Peoples R China

Recommended Citation:
Zhao, JX ,Qin, KZ ,Xiao, B ,et al. Thermal history of the giant Qulong Cu-Mo deposit, Gangdese metallogenic belt, Tibet: Constraints on magmatic-hydrothermal evolution and exhumation[J]. GONDWANA RESEARCH,2016,36(0):390-409.
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