Magnetostratigraphy and Authigenic Be-10/Be-9 Dating of Plio-Pleistocene Abyssal Surficial Sediments on the Southern Slope of Mariana Trench and Sedimentary Processes During the Mid-Pleistocene Transition

doi:10.1029/2020JC016250

IEECAS OpenIR > 黄土与第四纪地质国家重点实验室（2010~）

	Magnetostratigraphy and Authigenic Be-10/Be-9 Dating of Plio-Pleistocene Abyssal Surficial Sediments on the Southern Slope of Mariana Trench and Sedimentary Processes During the Mid-Pleistocene Transition
	Yi, Liang 1,2; Xu, Dong 3; Jiang, Xingyu 4; Ma, Xiaolin 5; Ge, Qian 3; Deng, Xiguang 6; Wang, Haifeng 6; Deng, Chenglong 7,8,9
通讯作者	Yi, Liang(yiliang@tongji.edu.cn)
	2020-08-01
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
ISSN	2169-9275
卷号	125 期号:8 页码:13
摘要	The Mariana Trench is the deepest part of Earth's surface, with a maximum depth of close to 11,000 m in the Challenger Deep. Great progress has been made in studying the trench in the past years; however, several basic issues regarding the sedimentology and geochronology of the abyssal surficial sediments in the trench remain unclear. In this study, two gravity cores of Plio-Pleistocene sediments were retrieved from the southern slope of the Mariana Trench. They were used for an integrated investigation of magnetostratigraphy, authigenic Be-10/Be-9 dating, and element manganese content. The principal results are as follows. (1) Ten magnetozones are recognized for Core A25, which can be correlated to the geomagnetic polarity time scale from Chrons C1n to C3r. (2) The paleomagnetic and Be-10/Be-9-based ages agree well for both of the two cores, yielding a continuous depositional hiatus since the middle Pleistocene (0.63-0.74 Ma). (3) The sediment accumulation rates prior to similar to 1.3 Ma are 35-83 cm/Myr and then increased substantially to 167-200 cm/Myr. Based on these results, a sedimentary transition at similar to 1.3-1.2 Ma is confirmed, which can be potentially correlated to climatic, oceanic, and tectonic changes in the Mid-Pleistocene transition. In addition, an elemental Mn proxy is derived to reflect changes in bottom-water ventilation, which is consistent with Lower Circumpolar Deep Water and North Atlantic Deep Water on glacial-interglacial time scales. We conclude that the sedimentary record of the Mariana Trench provides a unique window for investigating the integrated effects of long-term climatic, oceanic, and tectonic processes.
关键词	Mariana Trench Plio-Pleistocene Epoch magnetostratigraphy authigenic Be-10/Be-9 bottom-water evolution Mid-Pleistocene climatic transition (MPT)
DOI	10.1029/2020JC016250
关键词[WOS]	OCEAN CARBON STORAGE ; CHALLENGER DEEP ; SEA-LEVEL ; ATMOSPHERIC CO2 ; ICE VOLUME ; HALF-LIFE ; CLIMATE ; HISTORY ; EVOLUTION ; CONSTRAINTS
收录类别	SCI ; SCI
语种	英语
资助项目	National Natural Science Foundation of China[41690112] ; National Natural Science Foundation of China[41888101] ; National Natural Science Foundation of China[91958208] ; National Programme on Global Change and Air-Sea Interaction[GASI-GEOGE-03] ; National Key R&D Program of China[2018YFE0202401] ; COMRA Project from China Ocean Mineral Resources RD Association[DY135-E2-1-01] ; COMRA Project from China Ocean Mineral Resources RD Association[DY135-N1-1-01]
WOS研究方向	Oceanography
项目资助者	National Natural Science Foundation of China ; National Programme on Global Change and Air-Sea Interaction ; National Key R&D Program of China ; COMRA Project from China Ocean Mineral Resources RD Association
WOS类目	Oceanography
WOS记录号	WOS:000577126400024
出版者	AMER GEOPHYSICAL UNION
引用统计	被引频次：13[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/15464
专题	黄土与第四纪地质国家重点实验室（2010~）
通讯作者	Yi, Liang
作者单位	1.Tongji Univ, State Key Lab Marine Geol, Shanghai, Peoples R China 2.Pilot Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao, Peoples R China 3.Minist Nat Resources, Inst Oceanog 2, Key Lab Submarine Geosci, Hangzhou, Peoples R China 4.Tianjin Ctr, Key Lab Muddy Coastal Geoenvironm, Tianjin, Peoples R China 5.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Beijing, Peoples R China 6.Guangzhou Marine Geol Survey, MNR Key Lab Marine Mineral Resources, Guangzhou, Peoples R China 7.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China 8.Chinese Acad Sci, Inst Earth Sci, Beijing, Peoples R China 9.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Yi, Liang,Xu, Dong,Jiang, Xingyu,et al. Magnetostratigraphy and Authigenic Be-10/Be-9 Dating of Plio-Pleistocene Abyssal Surficial Sediments on the Southern Slope of Mariana Trench and Sedimentary Processes During the Mid-Pleistocene Transition[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2020,125(8):13.
APA	Yi, Liang.,Xu, Dong.,Jiang, Xingyu.,Ma, Xiaolin.,Ge, Qian.,...&Deng, Chenglong.(2020).Magnetostratigraphy and Authigenic Be-10/Be-9 Dating of Plio-Pleistocene Abyssal Surficial Sediments on the Southern Slope of Mariana Trench and Sedimentary Processes During the Mid-Pleistocene Transition.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,125(8),13.
MLA	Yi, Liang,et al."Magnetostratigraphy and Authigenic Be-10/Be-9 Dating of Plio-Pleistocene Abyssal Surficial Sediments on the Southern Slope of Mariana Trench and Sedimentary Processes During the Mid-Pleistocene Transition".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 125.8(2020):13.