Nature of the Paleo-Pacific Subduction Along the East Asian Continental Margin in the Mesozoic: Insights From the Sedimentary Record of West Sarawak, Borneo

doi:10.1029/2022GL102370

GIG OpenIR

	Zhou, Yang 1,2,3; Carter, Andrew 4; Wu, Jonny 5; Yao, Yongjian 6; Zhu, Rongwei 6; Liu, Hailing 7; Liu, Wei 3; Zhao, Qi 8; Zhu, Zuofei 6; Yan, Yi8 ; Liu, Qingsong 3
	Nature of the Paleo-Pacific Subduction Along the East Asian Continental Margin in the Mesozoic: Insights From the Sedimentary Record of West Sarawak, Borneo
Source Publication	GEOPHYSICAL RESEARCH LETTERS
ISSN	0094-8276
	2023-04-28
Volume	50 Issue:8 Pages:11
DOI	10.1029/2022GL102370
Language	英语
WOS Research Area	Geology
Abstract	The Mesozoic subduction history of the Paleo-Pacific plate below the East Asian margin remains contentious, in part because the southern part is poorly understood. To address this, we conducted a sediment provenance study to constrain Mesozoic subduction history below West Sarawak, Borneo. A combination of detrital zircon U-Pb geochronology, heavy minerals, trace element, and bulk rock Nd isotope data were used to identify the tectonic events. The overall maturity of mineral assemblages, dominantly felsic sources, abundant Precambrian-aged zircons, and low epsilon Nd(0) values (average -13.07) seen in Late Triassic sedimentary rocks suggest a period of inactive subduction near Borneo. Slab shallowing subduction occurred between 200 and 170 Ma based on subdued magmatism and tectonic compression across West Sarawak. From c. 170 to 70 Ma there was widespread magmatism and we interpret the Paleo-Pacific slab steepened. Collectively, we show the Paleo-Pacific plate subduction had variable slab dip histories in Borneo.
Keyword	Paleo-Pacific plate subduction history inactive subduction shallowing subduction slab steepened
WOS ID	WOS:000999832900001
Indexed By	SCI
Citation statistics
Document Type	期刊论文
Identifier	http://ir.gig.ac.cn/handle/344008/74308
Collection	中国科学院广州地球化学研究所
Corresponding Author	Yan, Yi; Liu, Qingsong
Affiliation	1.Beijing Normal Univ, Sch Natl Safety & Emergency Management, Zhuhai, Peoples R China 2.Minist Nat & Resources, Key Lab Marine Mineral Resources, Guangzhou, Peoples R China 3.Southern Univ Sci & Technol, Ctr Marine Magnetism CM2, Dept Ocean Sci & Engn, Shenzhen, Peoples R China 4.Birkbeck Univ London, Dept Earth & Planetary Sci, London, England 5.Univ Houston, Dept Earth & Atmospher Sci, Houston, TX USA 6.Guangzhou Marine Geol Survey, Guangzhou, Peoples R China 7.Chinese Acad Sci, South China Sea Inst Oceanol, Guangzhou, Peoples R China 8.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Ocean & Marginal Sea Geol, Guangzhou, Peoples R China
Recommended Citation GB/T 7714	Zhou, Yang,Carter, Andrew,Wu, Jonny,et al. Nature of the Paleo-Pacific Subduction Along the East Asian Continental Margin in the Mesozoic: Insights From the Sedimentary Record of West Sarawak, Borneo[J]. GEOPHYSICAL RESEARCH LETTERS,2023,50(8):11.
APA	Zhou, Yang.,Carter, Andrew.,Wu, Jonny.,Yao, Yongjian.,Zhu, Rongwei.,...&Liu, Qingsong.(2023).Nature of the Paleo-Pacific Subduction Along the East Asian Continental Margin in the Mesozoic: Insights From the Sedimentary Record of West Sarawak, Borneo.GEOPHYSICAL RESEARCH LETTERS,50(8),11.
MLA	Zhou, Yang,et al."Nature of the Paleo-Pacific Subduction Along the East Asian Continental Margin in the Mesozoic: Insights From the Sedimentary Record of West Sarawak, Borneo".GEOPHYSICAL RESEARCH LETTERS 50.8(2023):11.

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