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Early Mesozoic accretionary complex scattered throughout NE China and its tectonic implications: Insights from the mylonitic meta-sedimentary rocks in Huanan, Heilongjiang Province

文献类型：期刊论文

作者Liu, Kai3; Xiao, Wenjiao1,2; Wang, Hao2; Zhang, Jinjiang4; Liu, Junlai3; Xu, Mengyu1; Zhang, Bo4
刊名LITHOS
出版日期2023-12-01
卷号460页码:13
关键词Paleo-Pacific ocean Heilongjiang complex Subduction channel Archipelagic ocean
ISSN号0024-4937
DOI10.1016/j.lithos.2023.107376
英文摘要In NE Asia, the early stage (T-J) subduction history of the Paleo-Pacific oceanic plate was largely reconstructed by studies on the Heilongjiang complex, a blueschist-containing N-S trending high-pressure metamorphic belt, which is suggested to represent the "suture zone" between the Jiamusi Block and the rest of the Central Asian Orogenic Belt. However, recently more accretionary complexes with similar geochronological data were reported on both sides of the "suture zone", making the tectonic affinities of the "suture zone" unclear. Here, we select the mylonitic meta-sedimentary rocks in Huanan, one of the potential accretionary complexes near the central Jiamusi Block to reveal its depositional and metamorphic history and discuss the tectonic implications. Our results show that these rocks were deposited in/after the Late Triassic (defined by the youngest detrital zircon group) and accepted clastics from both the Jiamusi and Songliao blocks. Before the Early Jurassic (c. 178 Ma by apatite U-Pb dating results in this study), they experienced high-P/low-T metamorphism (510-520 degrees C and 10.5-11 kbar), and then were heated to about 610 degrees C at 8.5-9.2 kbar during exhumation. The meta-sedimentary rocks in Huanan are components of the early Mesozoic accretionary complex in NE China. However, their present location is c. 85 km to the east of the previous proposed "suture zone" from Luobei to Mudanjiang. Considering the spatially scattering distribution of other similar accretionary complexes, such as the Zhangguangcai complex (c. 40 km to the west of the "suture zone"), we suggest that these complexes dispersedly exposed throughout NE China were either nappes transported by post-exhumation thrusting, or remnants of archipelagic oceanic crusts in the NW Paleo-Pacific region during the early Mesozoic.
WOS关键词ASIAN OROGENIC BELT ; LU-HF ISOTOPES ; U-PB AGES ; MUDANJIANG OCEAN ; JIAMUSI MASSIF ; SUBDUCTION ; EVOLUTION ; ZIRCON ; CONSTRAINTS ; HISTORY
资助项目National Natural Science Foundation of China[42272252] ; National Natural Science Foundation of China[41888101] ; National Natural Science Foundation of China[41902233]
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
WOS记录号WOS:001098375300001
出版者ELSEVIER
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/132A11/110667]  
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Liu, Kai; Xiao, Wenjiao; Wang, Hao
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
2.Chinese Acad Sci, Inst Ecol & Geog, Xinjiang Res Ctr Mineral Resources, Urumqi, Peoples R China
3.China Univ Geosci, Sch Earth Sci & Resources, Beijing, Peoples R China
4.Peking Univ, Sch Earth & Space Sci, Key Lab Orogen Belts & Crustal Evolut, Minist Educ, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Kai,Xiao, Wenjiao,Wang, Hao,et al. Early Mesozoic accretionary complex scattered throughout NE China and its tectonic implications: Insights from the mylonitic meta-sedimentary rocks in Huanan, Heilongjiang Province[J]. LITHOS,2023,460:13.
APA Liu, Kai.,Xiao, Wenjiao.,Wang, Hao.,Zhang, Jinjiang.,Liu, Junlai.,...&Zhang, Bo.(2023).Early Mesozoic accretionary complex scattered throughout NE China and its tectonic implications: Insights from the mylonitic meta-sedimentary rocks in Huanan, Heilongjiang Province.LITHOS,460,13.
MLA Liu, Kai,et al."Early Mesozoic accretionary complex scattered throughout NE China and its tectonic implications: Insights from the mylonitic meta-sedimentary rocks in Huanan, Heilongjiang Province".LITHOS 460(2023):13.

入库方式： OAI收割

来源：地质与地球物理研究所

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