Cenozoic Evolution of the Bohai Bay Basin: Constraints From Seismic Radial Anisotropy

doi:10.1029/2023GL107112

IOCAS-IR > 海洋地质与环境重点实验室

	Cenozoic Evolution of the Bohai Bay Basin: Constraints From Seismic Radial Anisotropy
	Wu, Xiaoyang 1,2; Li, Cuilin 1,2; Fan, Jianke 1,2; Li, Chaoyang 3; Bai, Qipeng 4; Feng, Jikun 5; Dong, Dongdong1,2
	2024-06-28
发表期刊	GEOPHYSICAL RESEARCH LETTERS
ISSN	0094-8276
卷号	51 期号:12 页码:11
通讯作者	Li, Cuilin([email protected]) ; Dong, Dongdong([email protected])
摘要	We obtain three-dimensional models of crustal shear-wave velocity and radial anisotropy in the Bohai Bay basin (BBB), revealing distinct radial anisotropy patterns. The western region of the basin exhibits pronounced positive crustal radial anisotropies, attributed to upper mantle convection driven by the subduction of the Pacific plate during the early Tertiary. Conversely, the eastern region of the basin demonstrates weak to negative radial anisotropies, indicating a compression shear rupture system influenced by the far-field India-Eurasian collision during the Neogene-Quaternary. These differences suggest that the formation of the BBB is associated with the dynamic transition from Pacific subduction to India-Eurasian collision during the Cenozoic. Moreover, the Luxi uplift, with its stable upper-middle crustal structures, acts as a barrier hindering the eastward extension of the BBB. As the largest Meso-Cenozoic basin in Eastern China, the Bohai Bay basin (BBB) is an ideal site for studying basin evolution. However, the tectonic processes within the basin during the Cenozoic remain largely enigmatic. Seismic radial anisotropy, indicative of subhorizontal layering and/or shearing during crustal/lithospheric accretion, can offer valuable insights into Earth's dynamic processes. In this study, we use a direct inversion method called DRadiSurfTomo to create high-resolution three-dimensional models of shear-wave velocity and radial anisotropy in the BBB. Our findings indicate that current crustal radial anisotropy patterns in the basin reflect multiple dynamic stages since the Cenozoic. The strong positive radial anisotropy observed in the western BBB is primarily due to the subduction of the Pacific plate, whereas the weak radial anisotropy in the eastern BBB is mainly influenced by tension-shear forces resulting from the India-Eurasian collision. We also infer that the high shear-wave velocity and negative radial anisotropy in the upper-middle crust of the Luxi uplift are likely induced by rigid metamorphic rocks, hindering the basin's eastward expansion. Low velocity anomalies observed in the mid-to lower crust of the Bohai Sea is attributed to the presence of felsic materials The Cenozoic evolution of Bohai Bay basin (BBB) is related to the tectonic transition from Pacific subduction to India-Eurasian collision Luxi uplift acts as an obstruction, impeding the extension of the upper-middle crust in the BBB
DOI	10.1029/2023GL107112
收录类别	SCI
语种	英语
资助项目	Natural Science Foundation of Shandong Province[ZR2023QD116]; National Natural Science Foundation of China[42376080]; Postdoctoral Foundation of Qingdao[QDBSH20220202168]; Open Foundation of Key Laboratory of Marine Geology and Environment, Chinese Academy of Sciences[MGE2022KG3]; Taishan Scholars Program[tsqn202312263]; Taishan Scholars Program[tsqn202306283]; China Railway Technology Research Plan[E32228101H]; Science and Technology Innovation Project of Laoshan Laboratory[LSKJ202204400]
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:001246293700001
出版者	AMER GEOPHYSICAL UNION
WOS关键词	NORTH CHINA CRATON ; SURFACE-WAVE DISPERSION ; VELOCITY STRUCTURE ; CONTINENTAL-CRUST ; EASTERN CHINA ; PACIFIC PLATE ; UPPER-MANTLE ; INTRAPLATE VOLCANISM ; LITHOSPHERE BENEATH ; TECTONIC EVOLUTION
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/186570
专题	海洋地质与环境重点实验室
通讯作者	Li, Cuilin; Dong, Dongdong
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Observat & Forecasting, Key Lab Marine Geol & Environm, Qingdao, Peoples R China 2.Qingdao Marine Sci & Technol Ctr, Lab Marine Geol, Qingdao, Peoples R China 3.Shandong Univ Sci & Technol, Coll Earth Sci & Engn, Qingdao, Peoples R China 4.Hangzhou Appl Acoust Res Inst, Hangzhou, Peoples R China 5.Univ Sci & Technol China, Sch Earth & Space Sci, Lab Seismol & Phys Earths Interior, Hefei, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Wu, Xiaoyang,Li, Cuilin,Fan, Jianke,et al. Cenozoic Evolution of the Bohai Bay Basin: Constraints From Seismic Radial Anisotropy[J]. GEOPHYSICAL RESEARCH LETTERS,2024,51(12):11.
APA	Wu, Xiaoyang.,Li, Cuilin.,Fan, Jianke.,Li, Chaoyang.,Bai, Qipeng.,...&Dong, Dongdong.(2024).Cenozoic Evolution of the Bohai Bay Basin: Constraints From Seismic Radial Anisotropy.GEOPHYSICAL RESEARCH LETTERS,51(12),11.
MLA	Wu, Xiaoyang,et al."Cenozoic Evolution of the Bohai Bay Basin: Constraints From Seismic Radial Anisotropy".GEOPHYSICAL RESEARCH LETTERS 51.12(2024):11.