Detrital zircon U-Pb geochronology, Hf isotopes and geochemistry constraints on crustal growth and Mesozoic tectonics of southeastern China
文献类型：期刊论文
| 作者 | Meng, Lifeng1,2,3,4; Li, Zheng-Xiang1,3,4; Chen, Hanlin1,2; Li, Xian-Hua5; Zhu, Chen1 |
| 刊名 | JOURNAL OF ASIAN EARTH SCIENCES
 |
| 出版日期 | 2015-06-01 |
| 卷号 | 105页码:286-299 |
| 关键词 | South China Detrital zircon Geochronology U-Pb and Hf isotopes Mesozoic Flat-slab subduction |
| DOI | 10.1016/j.jseaes.2015.01.015 |
| 文献子类 | Article |
| 英文摘要 | In situ U-Pb geochronological, Hf isotopic and REE geochemical analyses of detrital zircons from Mesozoic sandstones in central Jiangxi and east Hunan of the South China Block (SCB) are used to provide not only information about crustal evolution process, but more importantly new constraints on sedimentary provenances as well as Mesozoic basin evolutions in central SCB. A total of 417 concordant zircon analyses define five U-Pb age populations at ca. 2.6-2.3 Ga, ca. 2.0-1.7 Ga, ca. 1.0-0.7 Ga, ca. 500400 Ma and ca. 300-200 Ma. Integrated analyses of zircon U-Pb ages and Hf isotopes of detrital zircons reveal five episodes of juvenile continental crust growth: ca. 2.5 Ga, ca. 1.7 Ga, ca. 850 Ma, ca. 440 Ma and ca. 230 Ma, with all but the ca. 2.5 Ga episode likely represent that of the SCB. None of the three samples from T-3-J(1) strata showed strong ca. 1850 Ma and ca. 230 Ma peaks suggesting that the T-3-J(1) sediments probably sourced from the Yangtze Block. In contrast, stronger peaks of ca. 1850 Ma and ca. 250-230 Ma in post-J(1) strata relative to that of T-3-J(1) strata suggest a dominantly local Cathaysian provenance. In addition, the distinct low epsilon Hf(T) values for zircons of ca. 430 Ma from T-3-J(1) strata in comparison with higher epsilon Hf(T) values for that from post-J(1) strata also support aforementioned viewpoint. Such sharp changes between the pre-J(1) and post-J(1) strata coincide with the remarkable change in regional palaeogeography from a broad shallow marine basin in the Late Triassic-Early Jurassic time to a basin-and-range-style province in the Middle Jurassic. The characteristics and time evolution of detrital zircons from the studied area are consistent with the flat-slab subduction model which involves the development of a broad sag basin during the T-3-J(1) time, and a rapid regional uplift in the Cathaysia Block caused by the reinitiating of normal subduction along the coastal region at ca. 190 Ma. (C) 2015 Elsevier Ltd. All rights reserved. |
| WOS关键词 | FLAT-SLAB SUBDUCTION ; TRACE-ELEMENT COMPOSITION ; RARE-EARTH-ELEMENTS ; SOUTH CHINA ; CONTINENTAL-CRUST ; INDOSINIAN OROGENY ; CATHAYSIA BLOCK ; YANGTZE CRATON ; VOLCANIC-ROCKS ; LU-HF |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000355051700018 |
| 资助机构 | Chinese National Natural Science Foundation(41302165 ; Chinese National Natural Science Foundation(41302165 ; 41330207) ; 41330207) ; Chinese National Natural Science Foundation(41302165 ; Chinese National Natural Science Foundation(41302165 ; 41330207) ; 41330207) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/62508]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 作者单位 | 1.Zhejiang Univ, Dept Earth Sci, Hangzhou 310027, Zhejiang, Peoples R China 2.Struct Res Ctr Oil & Gas Bearing Basin, Minist Educ, Hanghzou 310027, Peoples R China 3.Curtin Univ, ARC Ctr Excellence Core Crust Fluid Syst CCFS, Perth, WA 6845, Australia 4.Curtin Univ, Inst Geosci Res TIGeR, Perth, WA 6845, Australia 5.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 10029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Meng, Lifeng,Li, Zheng-Xiang,Chen, Hanlin,et al. Detrital zircon U-Pb geochronology, Hf isotopes and geochemistry constraints on crustal growth and Mesozoic tectonics of southeastern China[J]. JOURNAL OF ASIAN EARTH SCIENCES,2015,105:286-299. |
| APA | Meng, Lifeng,Li, Zheng-Xiang,Chen, Hanlin,Li, Xian-Hua,&Zhu, Chen.(2015).Detrital zircon U-Pb geochronology, Hf isotopes and geochemistry constraints on crustal growth and Mesozoic tectonics of southeastern China.JOURNAL OF ASIAN EARTH SCIENCES,105,286-299. |
| MLA | Meng, Lifeng,et al."Detrital zircon U-Pb geochronology, Hf isotopes and geochemistry constraints on crustal growth and Mesozoic tectonics of southeastern China".JOURNAL OF ASIAN EARTH SCIENCES 105(2015):286-299. |
入库方式： OAI收割
来源：地质与地球物理研究所
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