气候变化领域集成服务门户(CCPortal): The Potential of Marine Ferromanganese Nodules From Eastern Pacific as Recorders of Earth's Magnetic Field Changes During the Past 4.7 Myr: A Geochronological Study by Magnetic Scanning and Authigenic 10Be/9Be Dating

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DOI	10.1029/2019JB018639
	The Potential of Marine Ferromanganese Nodules From Eastern Pacific as Recorders of Earth's Magnetic Field Changes During the Past 4.7 Myr: A Geochronological Study by Magnetic Scanning and Authigenic 10Be/9Be Dating
	Yi L.; Medina-Elizalde M.; Kletetschka G.; Yao H.; Simon Q.; Paterson G.A.; Bourlès D.L.; Deng X.; Du J.; Qin H.; Chen Y.; Xie Q.; Xiao J.; Wang Y.; Andreucci C.; Keddadouche K.; Aumaître G.; Liu Y.; Wang H.; Shen Z.; Gu X.; Smith T.; Dang H.; Jian Z.; Song T.; He H.; Deng C.; Zhu R.
发表日期	2020
ISSN	21699313
卷号	125 期号:7
英文摘要	The Clarion and Clipperton Fracture Zones in the Eastern Pacific are well known as a manganese nodule belt, which developed since the late Oligocene. The slow growth rate of these marine ferromanganese nodules implies that they have potentially recorded long-term environmental changes. To produce environmental records from these nodules, their chronology needs to be established first. In order to achieve this objective, many dating methods have been applied; however, due to relatively low-resolution temporal constraint, high-resolution environmental signals recorded in marine ferromanganese nodules have not been well documented yet. In this paper, we present a geochronological study based jointly on magnetic scanning and analyses of the authigenic beryllium isotopes (authigenic 10Be/9Be) and the cobalt (Co) flux of a marine ferromanganese nodule. Results lead to the following observations: (1) The growth of the studied nodule resulted from a combination of hydrogenetic and diagenetic processes, and (2) a total of 24 magnetozones is recognized for the studied nodule. Correlation to the geomagnetic polarity timescale suggests that chrons from C3n.2r to C1n were recorded in the nodule, implying that the growth of this nodule initiated ~4.70 Ma, which agrees well with the authigenic 10Be/9Be and Co chronometers. Furthermore, a consistent pattern of broad paleomagnetic field variations was observed between the nodule's magnetic signal and the ocean-floor magnetic fields of the South Atlantic, confirming the validity of our growth model. Overall, our study highlights the potential of marine ferromanganese nodules from the Eastern Pacific as recorders of changes in Earth's magnetic field. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	authigenic 10Be/9Be; Eastern Pacific; magnetic scanning; marine ferromanganese nodule; Plio-Pleistocene epochs
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187758
作者单位	State Key Laboratory of Marine Geology, Tongji University, Shanghai, China; Laboratory for Marine Geology, Pilot National Laboratory for Marine Science and Technology, Qingdao, China; Key Laboratory of Marine Mineral Resources, Ministry of Natural Resources, Guangzhou Marine Geological Survey, Guangzhou, China; Department of Geosciences, Auburn University, Auburn, AL, United States; Institute of Geology, Academy of Sciences of the Czech Republic, Prague, Czech Republic; Faculty of Science, Charles University in Prague, Prague, Czech Republic; Department of Geology and Geophysics, University of Alaska Fairbanks, Fairbanks, AK, United States; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China; CEREGE UM34, Aix Marseille University, CNRS, IRD, INRAE, Coll France, Aix-en-Provence, France; Department of Earth, Ocean and Ecological Sciences, University of Liverpool, Liverpool, United Kingdom; Institutions of Earth Science, Chinese Academy of Sciences, Beijing, China; Key ...
推荐引用方式 GB/T 7714	Yi L.,Medina-Elizalde M.,Kletetschka G.,et al. The Potential of Marine Ferromanganese Nodules From Eastern Pacific as Recorders of Earth's Magnetic Field Changes During the Past 4.7 Myr: A Geochronological Study by Magnetic Scanning and Authigenic 10Be/9Be Dating[J],2020,125(7).
APA	Yi L..,Medina-Elizalde M..,Kletetschka G..,Yao H..,Simon Q..,...&Zhu R..(2020).The Potential of Marine Ferromanganese Nodules From Eastern Pacific as Recorders of Earth's Magnetic Field Changes During the Past 4.7 Myr: A Geochronological Study by Magnetic Scanning and Authigenic 10Be/9Be Dating.Journal of Geophysical Research: Solid Earth,125(7).
MLA	Yi L.,et al."The Potential of Marine Ferromanganese Nodules From Eastern Pacific as Recorders of Earth's Magnetic Field Changes During the Past 4.7 Myr: A Geochronological Study by Magnetic Scanning and Authigenic 10Be/9Be Dating".Journal of Geophysical Research: Solid Earth 125.7(2020).