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Neoproterozoic sedimentary rocks in the Liantuo Formation in South China and their implication based on geochronological and Sr-Nd-Hf-Pb isotope insights

文献类型：期刊论文

作者Kong, Juanjuan5; Xiao, Yuanyuan1,2,3,4; Sui, Peishan6
刊名GEOCHEMISTRY
出版日期2024-05-01
卷号84期号:2页码:17
关键词Neoproterozoic Sedimentary rocks Zircon U-Pb Rodinia supercontinent Sr-Nd-Pb-Hf isotopes
ISSN号0009-2819
DOI10.1016/j.chemer.2024.126115
通讯作者Xiao, Yuanyuan(yuanyuan.xiao@qdio.ac.cn)
英文摘要Deposition of the Liantuo Formation is closely associated with the evolutionary history of the Rodinia supercontinent, as indicated by the breakup of the Yangtze Craton in South China. In this paper, we also carried out a detailed U-Pb zircon examination of the Liantuo Formation. Radiometric dating of sandstone within the Liantuo Formation suggested that it was deposited ca. 790 Ma, which coordinated with the age-paleopole contradictions in the Liantuo Formation for exploring the evolutionary history of the Yangtze Block during the breakup of the Rodinia supercontinent. All the Liantuo sandstones and shales have variable Sr isotopic compositions, with initial Sr isotope ratios ranging from 0.6920 to 0.7217, which support significant fluvial contributions during the deposition of the Liantuo Formation. Samples of the Liantuo Formation show distinct variations in Nd-Hf isotopic compositions, suggesting that the Nantuo Formation received relatively juvenile materials (e.g., the newly formed Neoproterozoic rocks from the northern margin of the Yangtze Block), whereas the Liantuo Formation received relatively mature inputs (e.g., the Huangling granitoids and/or Kongling complex). The samples from the Liantuo Formation also contain various Pb isotopes (206Pb/204Pb = 17.56-17.76, 207Pb/204Pb = 15.05-15.43 and 208Pb/204Pb = 35.51-36.79). These values are also close to the Pb isotopic compositions of the Kongling complex, which suggest that the sedimentary rocks were enriched (the Kongling complex) and are consistent with the Nd-Hf isotope data. That is, the major provenance of the Liantuo Formation is from the South China Block basement, which is the local Kongling complex. In contrast, the Luoquan diamictite can represent the well-mixed composition of the upper continental crust (UCC) in the North China Block during the Neoproterozoic.
WOS关键词UPPER CONTINENTAL-CRUST ; 3 GORGES AREA ; YANGTZE BLOCK ; NORTH CHINA ; TRACE-ELEMENT ; DOUSHANTUO FORMATION ; GEOCHEMICAL EVIDENCE ; PALEOMAGNETIC POLE ; MAFIC INTRUSIONS ; NANTUO FORMATION
资助项目National Natural Science Foundation of Shandong Province, China[ZR2020QD044] ; National Natural Science Foundation of China[41776069] ; National Natural Science Foundation of China[41572047] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42020302] ; Taishan Scholars Program
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:001253671700001
出版者ELSEVIER GMBH
源URL[http://ir.qdio.ac.cn/handle/337002/186440]  
专题海洋研究所_海洋地质与环境重点实验室
通讯作者Xiao, Yuanyuan
作者单位1.Chinese Acad Sci, Ctr Deep Sea Res, Inst Oceanol, Qingdao 266071, Peoples R China
2.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Peoples R China
3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China
4.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
5.Shandong Univ Sci & Technol, Coll Ocean Sci & Engn, Qingdao 266590, Peoples R China
6.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Kong, Juanjuan,Xiao, Yuanyuan,Sui, Peishan. Neoproterozoic sedimentary rocks in the Liantuo Formation in South China and their implication based on geochronological and Sr-Nd-Hf-Pb isotope insights[J]. GEOCHEMISTRY,2024,84(2):17.
APA Kong, Juanjuan,Xiao, Yuanyuan,&Sui, Peishan.(2024).Neoproterozoic sedimentary rocks in the Liantuo Formation in South China and their implication based on geochronological and Sr-Nd-Hf-Pb isotope insights.GEOCHEMISTRY,84(2),17.
MLA Kong, Juanjuan,et al."Neoproterozoic sedimentary rocks in the Liantuo Formation in South China and their implication based on geochronological and Sr-Nd-Hf-Pb isotope insights".GEOCHEMISTRY 84.2(2024):17.

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来源：海洋研究所

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