Arc signatures in abyssal peridotites and its implications

doi:10.1016/j.dsr.2023.104027

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	Arc signatures in abyssal peridotites and its implications
	Wang, Jixin 1,4; Shang, Xiuqi 1,3,4; Ma, Qiang 2; Chen, Chen 1,4; Liu, Yang 2; Li, Congyin 1,4
刊名	DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
	2023-07-01
卷号	197 页码:9
关键词	Mid-ocean ridges Abyssal peridotites Subduction signature Ridge spreading rates
ISSN号	0967-0637
DOI	10.1016/j.dsr.2023.104027
通讯作者	Li, Congyin(licongying@qdio.ac.cn)
英文摘要	Investigating mass exchanges between the subduction zones and mid-ocean ridges provides essential clues to understanding recycling process and mantle convection in the Earth's mantle. In this study, we found evidence of recycled subduction signals in the abyssal peridotites from mid-ocean ridges through their extremely low bulk (Dy/Yb)N and bulk Al2O3, which could not be explained by normal decompression melting at mid-ocean ridges, but required a hydrous melting history. We show here that abyssal peridotites from the fast-spreading Pacific Oceanic Ridges (East-Pacific Rise and Pacific-Antarctic Ridge), to the ultraslow-spreading Southwest Indian Ridge and to the slow-spreading Mid-Atlantic Ridge, require increasing amount of slab-derived fluid in their mantle sources. Therefore, the subduction influence on abyssal peridotites is independent of the spreading rates of the overlying ridges. Locations, such as the Fifteen-Twenty Fracture Zone, the Rainbow Massif from the MAR and the Hess Deep from EPR, have abyssal peridotites overlap well with forearc peridotites, suggesting that the prominent characteristics of arc mantle wedge could be preserved in abyssal peridotites when the traveling distance or time is short for the recycled arc mantle migrating in the mantle convection flow. The well-preserved subduction-related signature in ridge areas that are relatively proximal to modern subduction zones imply that mass exchanges between the subduction zones and mid-ocean ridges may be more efficient than previously thought.
资助项目	National Natural Science Foundation of China (NSFC) ; Shandong Provincial Natural Science Foundation[XDA22050103] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[42006051] ; Chinese Academy of Sciences[41627803] ; [ZR2020QD075] ; [2020212] ; [XDB42020303]
WOS关键词	MID-ATLANTIC RIDGE ; TRACE-ELEMENT FRACTIONATION ; BONE AMAGMATIC SEGMENT ; MELT EXTRACTION ; SERPENTINITES CONSTRAINTS ; MANTLE LITHOSPHERE ; RAINBOW MASSIF ; BENEATH ; CRUST ; GEOCHEMISTRY
WOS研究方向	Oceanography
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:001055249400001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/182846]
专题	海洋研究所_深海极端环境与生命过程研究中心
通讯作者	Li, Congyin
作者单位	1.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Qingdao 266071, Peoples R China 2.Tongji Univ, State Key Lab Marine Geol, Shanghai 200092, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Laoshan Lab, Lab Marine Mineral Resources, Qingdao 266237, Peoples R China
推荐引用方式 GB/T 7714	Wang, Jixin,Shang, Xiuqi,Ma, Qiang,et al. Arc signatures in abyssal peridotites and its implications[J]. DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,2023,197:9.
APA	Wang, Jixin,Shang, Xiuqi,Ma, Qiang,Chen, Chen,Liu, Yang,&Li, Congyin.(2023).Arc signatures in abyssal peridotites and its implications.DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,197,9.
MLA	Wang, Jixin,et al."Arc signatures in abyssal peridotites and its implications".DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS 197(2023):9.