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  4. 岩石圈演化国家重点实验室
Insights into Polyphase Phanerozoic Tectonic Events in SE China: Integrated Isotopic Microanalysis of Detrital Zircon and Monazite

文献类型：期刊论文

作者Wu, Li-Guang2,3,4; Li, Xian-Hua2,3,4; Yao, Weihua1,5; Ling, Xiao-Xiao2,3; Lu, Kai2,3,4
刊名LITHOSPHERE
出版日期2020-06-01
卷号2020期号:1页码:17
ISSN号1941-8264
DOI10.2113/2020/8837978
英文摘要Widespread Paleozoic and Mesozoic granites are characteristics of SE China, but the geodynamic mechanisms responsible for their emplacement are an issue of ongoing debate. To shed new light on this issue, we present an integrated geochronological and isotopic study of detrital zircon and monazite from Cambrian metasandstones and modern beach sands in the Yangjiang region, SE China. For the Cambrian metasandstone sample, detrital zircon displays a wide age range between 490 and 3000 Ma, while monazite grains record a single age peak of 235 Ma. The results suggest that a significant Triassic (235 Ma) metamorphic event is recorded by monazite but not zircon. For the beach sand sample, detrital zircon ages show six peaks at ca. 440, 240, 155, 135, 115, and 100 Ma, whereas detrital monazite yields a dominant age peak at 237Ma and a very minor age peak at 435 Ma. Beach sand zircon displays features that are typical of a magmatic origin. Their Hf-O isotopes reveal two crustal reworking events during the early Paleozoic and Triassic, in addition to one juvenile crustal growth event during the Jurassic-Cretaceous. The beach sand monazite records intense Triassic igneous and metamorphic events with significant crustal reworking. Such early Paleozoic and Triassic geochemical signatures of detrital zircon and monazite suggest they were derived from granitoids and metamorphic rocks which formed in intraplate orogenies, i.e., the early Paleozoic Wuyi-Yunkai Orogeny and Triassic Indosinian Orogeny. The Jurassic-Cretaceous signature of detrital zircon may reflect multistage magmatism that was related to subduction of the Paleo-Pacific Plate beneath SE China.
WOS关键词U-TH-PB ; I-TYPE GRANITES ; HAINAN ISLAND IMPLICATIONS ; NATURAL REFERENCE MATERIAL ; LA-ICPMS ZIRCON ; HF-O ISOTOPES ; SOUTH CHINA ; CATHAYSIA BLOCK ; LU-HF ; CONTINENTAL COLLISION
资助项目National Natural Science Foundation of China[41673018]
WOS研究方向Geochemistry & Geophysics ; Geology
语种英语
WOS记录号WOS:000617908500020
出版者GEOSCIENCEWORLD
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/100063]  
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, Xian-Hua
作者单位1.Sun Yat Sen Univ, Sch Earth Sci & Engn, Guangdong Prov Key Lab Geodynam & Geohazards, Guangzhou 510275, Peoples R China
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
5.Curtin Univ, Sch Earth & Planetary Sci, Earth Dynam Res Grp, Perth, WA 6845, Australia
推荐引用方式
GB/T 7714		 Wu, Li-Guang,Li, Xian-Hua,Yao, Weihua,et al. Insights into Polyphase Phanerozoic Tectonic Events in SE China: Integrated Isotopic Microanalysis of Detrital Zircon and Monazite[J]. LITHOSPHERE,2020,2020(1):17.
APA Wu, Li-Guang,Li, Xian-Hua,Yao, Weihua,Ling, Xiao-Xiao,&Lu, Kai.(2020).Insights into Polyphase Phanerozoic Tectonic Events in SE China: Integrated Isotopic Microanalysis of Detrital Zircon and Monazite.LITHOSPHERE,2020(1),17.
MLA Wu, Li-Guang,et al."Insights into Polyphase Phanerozoic Tectonic Events in SE China: Integrated Isotopic Microanalysis of Detrital Zircon and Monazite".LITHOSPHERE 2020.1(2020):17.

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来源：地质与地球物理研究所

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