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Titanite in situ SIMS U-Pb geochronology, elemental and Nd isotopic signatures record mineralization and fluid characteristics at the Pusangguo skarn deposit, Tibet

文献类型：期刊论文

作者Cao, MingJian1,5; Qin, KeZhang1,4,5; Evans, Noreen J.3; Li, GuangMing1,4,5; Ling, XiaoXiao2,5; McInnes, Brent I. A.3; Zhao, JunXing1,5
刊名MINERALIUM DEPOSITA
出版日期2020-10-12
页码10
ISSN号0026-4598
关键词Pusangguo skarn deposit Titanite SIMS U-Pb dating Titanite in situ Nd isotope Epidote and calcite in situ Sr isotope Redox conditions Gangdese metallogenic belt
DOI10.1007/s00126-020-01021-4
英文摘要The Pusangguo skarn is a newly discovered Cu-Pb-Zn deposit in the Gangdese metallogenic belt, Tibet. In order to constrain the age of the deposit and the source of hydrothermal fluids, various types of titanite and coexisting minerals in the Pusangguo deposit were studied. The titanite occurring interstitially in fresh granodiorite is magmatic and characterized by high REE, Y, Mn, and Lu/Hf ratios, and high crystallization temperatures (700 to 750 degrees C). The titanite growing with, or included in, diopside in the prograde endoskarn, or occurring with epidote, calcite, and quartz in the retrograde exoskarn, is hydrothermal titanite characterized by low REE, Y, Mn, and Lu/Hf ratios. The titanite in the retrograde exoskarn typically contains a REE-enriched early core characterized by a negative Eu anomaly, and an overgrowth REE-depleted rim with a positive Eu anomaly. The secondary-ion mass spectrometry U-Pb dating of titanite drilled from thin sections of retrograde exoskarn shows intercept ages of 14.91 +/- 0.31 Ma, which are consistent with the granodiorite age (14.63 +/- 0.30 Ma), indicating coeval emplacement of granodiorite and skarn mineralization at similar to 14.7 Ma. In addition, in situ epidote and calcite Sr isotopes and titanite Nd isotopes, all analyzed in the same retrograde exoskarn thin section, show similar Sr-Nd isotopic compositions to magmatic plagioclase and granodiorite (whole rock), indicating that the retrograde hydrothermal fluids were directly derived from, or had the same origin as, the granodiorite.
WOS关键词GANGDESE METALLOGENIC BELT ; POLYGENETIC TITANITE ; POLYMETALLIC DEPOSIT ; PORPHYRY DEPOSIT ; WESTERN JUNGGAR ; TRACE-ELEMENTS ; ORE-DEPOSITS ; MO SKARN ; CU ; ZIRCON
资助项目Second Tibetan Plateau Scientific Expedition and Research Program[2019QZKK0801] ; Youth Innovation Promotion Association CAS[2018086] ; Natural Science Foundation of China[41773047]
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
出版者SPRINGER
WOS记录号WOS:000576747400001
资助机构Second Tibetan Plateau Scientific Expedition and Research Program ; Second Tibetan Plateau Scientific Expedition and Research Program ; Second Tibetan Plateau Scientific Expedition and Research Program ; Second Tibetan Plateau Scientific Expedition and Research Program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program ; Second Tibetan Plateau Scientific Expedition and Research Program ; Second Tibetan Plateau Scientific Expedition and Research Program ; Second Tibetan Plateau Scientific Expedition and Research Program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program ; Second Tibetan Plateau Scientific Expedition and Research Program ; Second Tibetan Plateau Scientific Expedition and Research Program ; Second Tibetan Plateau Scientific Expedition and Research Program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program ; Second Tibetan Plateau Scientific Expedition and Research Program ; Second Tibetan Plateau Scientific Expedition and Research Program ; Second Tibetan Plateau Scientific Expedition and Research Program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/98302]  
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
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Cao, MingJian
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 Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
3.Curtin Univ, Sch Earth & Planetary Sci, John de Laeter Ctr, Perth, WA 6945, Australia
4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
5.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Cao, MingJian,Qin, KeZhang,Evans, Noreen J.,et al. Titanite in situ SIMS U-Pb geochronology, elemental and Nd isotopic signatures record mineralization and fluid characteristics at the Pusangguo skarn deposit, Tibet[J]. MINERALIUM DEPOSITA,2020:10.
APA Cao, MingJian.,Qin, KeZhang.,Evans, Noreen J..,Li, GuangMing.,Ling, XiaoXiao.,...&Zhao, JunXing.(2020).Titanite in situ SIMS U-Pb geochronology, elemental and Nd isotopic signatures record mineralization and fluid characteristics at the Pusangguo skarn deposit, Tibet.MINERALIUM DEPOSITA,10.
MLA Cao, MingJian,et al."Titanite in situ SIMS U-Pb geochronology, elemental and Nd isotopic signatures record mineralization and fluid characteristics at the Pusangguo skarn deposit, Tibet".MINERALIUM DEPOSITA (2020):10.

入库方式： OAI收割

来源：地质与地球物理研究所

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