IOCAS-IR
Early hydrosphere-rock interactions and intra-crustal recycling recorded by remarkably high-delta O-18 Mesoarchean granitoids in the Sulu orogenic belt, eastern China
Liu, Jianhui1; Ding, Zhengjiang2; Chen, Hui1; Wang, Xiangjian3; Liu, Fulai1
2021-08-15
Source PublicationPRECAMBRIAN RESEARCH
ISSN0301-9268
Volume362Pages:13
Corresponding AuthorLiu, Jianhui(liujianhui1999@163.com)
AbstractWhen, why and how global plate tectonics were initiated, as well as secular changes of plate tectonics over time are fundamental issues in the earth sciences. In this study, we present a combined U-Pb, Hf and O isotope dataset for complex zircons from the high-grade granitic (TTG) gneisses of the Haiyangsuo complex in the Sulu orogenic belt, eastern China. This combined dataset reveals that the granitoids formed by at least ca. 3.22, 2.81, 2.70 and 2.58 Ga and recorded multiple metamorphic thermal events that occurred at ca. 3.05, 2.60-2.50 and 1.93-1.85 Ga. The 3.22 and 2.58 Ga granitoids have negative epsilon(Hf)(t) values (averages of -2.08 and -10.81, respectively) and were derived from remelting of evolved Eoarchean crust, in combination of 3.47 Ga inherited zircon, reflecting occurrence of matured felsic continent crust in the Paleoarchean, whereas the 2.81 and 2.70 Ga granitoids show positive eHf(t) values (averages of + 4.32 and + 2.23, respectively) and formed by remelting of juvenile crust derived from depleted mantle at ca. 3.0 Ga. The 3.22, 2.70 and 2.58 Ga granitoids have mantle-like or slightly enriched zircon delta O-18 values (averages of 5.53 +/- 0.15, 5.41 +/- 0.18 and 6.10 +/- 0.22 parts per thousand, respectively). However, the 2.81 Ga granitoid displays remarkably high zircon delta O-18 values ranging from 9.65 to 7.02 parts per thousand with an average of 8.48 +/- 0.29 parts per thousand (1 SD), this demonstrates occurrences of early hydrosphere-rock interactions and intra-crustal recycling in the Mesoarchean. Synthetically, here we propose the following tectonic model for the formation of the high-delta O-18 Mesoarchean granitoids: (1) Generation of voluminous high-density lower crust along with the formation of early felsic continent dominated by TTGs; (2) gravity-driven subduction of denser oceanic crust relative to continental crust induced by delamination of high-density lower crust together with lithospheric mantle; and (3) subsequently partial melting of altered high-delta O-18 hydrated oceanic crust caused by delamination-induced hot asthenospheric mantle upwelling to form the high-delta O-18 Mesoarchean granitoid. Furthermore, we argue that gravity-driven subduction occurred in the Archean, and subduction may be responsible for the trend towards increasing delta O-18 values within zircons since the Mesoarchean.
KeywordArchean continental growth Hydrosphere-crust interaction Intra-crustal recycling High-delta O-18 granitoids Gravity-driven subduction
DOI10.1016/j.precamres.2021.106311
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41772195] ; National Natural Science Foundation of China[41973048] ; Scientific Research Fund of the Institute of Geology, Chinese Academy of Geological Sciences[S2006] ; Geological Survey Fund of the China Geological Survey[DD20190358] ; Natural Science Foundation of Shandong Province[ZR2016DM01]
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000684184400028
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/176029
Collection中国科学院海洋研究所
Corresponding AuthorLiu, Jianhui
Affiliation1.Chinese Acad Geol Sci, Inst Geol, Baiwanzhuang Rd 26, Beijing 100037, Peoples R China
2.Shandong Prov Bur Geol & Mineral Resources, Jinan 250013, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
Recommended Citation
GB/T 7714
Liu, Jianhui,Ding, Zhengjiang,Chen, Hui,et al. Early hydrosphere-rock interactions and intra-crustal recycling recorded by remarkably high-delta O-18 Mesoarchean granitoids in the Sulu orogenic belt, eastern China[J]. PRECAMBRIAN RESEARCH,2021,362:13.
APA Liu, Jianhui,Ding, Zhengjiang,Chen, Hui,Wang, Xiangjian,&Liu, Fulai.(2021).Early hydrosphere-rock interactions and intra-crustal recycling recorded by remarkably high-delta O-18 Mesoarchean granitoids in the Sulu orogenic belt, eastern China.PRECAMBRIAN RESEARCH,362,13.
MLA Liu, Jianhui,et al."Early hydrosphere-rock interactions and intra-crustal recycling recorded by remarkably high-delta O-18 Mesoarchean granitoids in the Sulu orogenic belt, eastern China".PRECAMBRIAN RESEARCH 362(2021):13.
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