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Sedimentation rate control on diagenesis, East China Sea sediments

文献类型：期刊论文

作者Zheng, Yan2,3,4; Zheng, Hongbo1; Kissel, Catherine3; Laj, Carlo3
刊名PHYSICS OF THE EARTH AND PLANETARY INTERIORS
出版日期2011-08-01
卷号187期号:3-4页码:301-309
关键词Magnetic properties Diagenesis Suboxic-sulfate boundary (SSB) Sulfate-methane transition (SMT) East China Sea
ISSN号0031-9201
DOI10.1016/j.pepi.2011.05.005
文献子类Article
英文摘要Diagenesis of ferrimagnetic minerals can alter the magnetic properties, erasing partially or entirely the original paleomagnetic and paleoclimatic signals, especially on continental margins where sedimentation rates are usually high. Understanding the mechanisms by which magnetic particles are affected by diagenesis is therefore critical for retrieving paleomagnetic and paleoclimatic information from sediments. High-resolution magnetic analysis was carried out on rapidly deposited (0.4-20 mm/year) Holocene sediments from the East China Sea (ECS) inner continental shelf. The primary magnetic mineral assemblage in the sediment core contains ferrimagnetic minerals, such as magnetite, with minor contributions from hematite. The magnetic properties vary down-core in two steps, due to post-depositional reductive diagenesis. The first occurs at depths of 0.15-1.1 m and is characterized by reduction of both magnetite and hematite in suboxic sediments. The suboxic-sulfate boundary (SSB) is therefore located at 1.1 m. We demonstrate that the depth of the SSB has negative relation to the average sedimentation rate in Chinese marginal seas. The second step change in magnetic properties occurs at 3.2-5.8 m, and contains two intervals with extremely low magnetic mineral content, each corresponding to dissolution fronts associated with the former and present position of the sulfate-methanic transition (SMT). These two intervals correlate well with abrupt changes in sedimentation rate and separate the anoxic zone into two parts: the sulfidic zone and the methanic zone. Our study suggests that sedimentation rate provides a dominant control on magnetic mineral diagenesis, at least in the Chinese marginal seas, which controls not only the type of redox zonation, but also the thicknesses of diagenetic zones. (C) 2011 Elsevier B.V. All rights reserved.
WOS关键词MAGNETIC MINERAL DIAGENESIS ; MARINE-SEDIMENTS ; HEMIPELAGIC SEDIMENTS ; ORGANIC-MATTER ; INDIAN-OCEAN ; CAL KYR ; ROCK ; SCALE ; IDENTIFICATION ; ENVIRONMENTS
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000296207900018
出版者ELSEVIER SCIENCE BV
资助机构National Natural Science Foundation of China (NSFC)(40830107 ; National Natural Science Foundation of China (NSFC)(40830107 ; National Natural Science Foundation of China (NSFC)(40830107 ; National Natural Science Foundation of China (NSFC)(40830107 ; French Commissariat a l'Energie Atomique (CEA) ; French Commissariat a l'Energie Atomique (CEA) ; French Commissariat a l'Energie Atomique (CEA) ; French Commissariat a l'Energie Atomique (CEA) ; Centre National de la Recherche Scientifique (CNRS) ; Centre National de la Recherche Scientifique (CNRS) ; Centre National de la Recherche Scientifique (CNRS) ; Centre National de la Recherche Scientifique (CNRS) ; 40676033 ; 40676033 ; 40676033 ; 40676033 ; 40621063 ; 40621063 ; 40621063 ; 40621063 ; 40821091 ; 40821091 ; 40821091 ; 40821091 ; 40925012) ; 40925012) ; 40925012) ; 40925012) ; National Natural Science Foundation of China (NSFC)(40830107 ; National Natural Science Foundation of China (NSFC)(40830107 ; National Natural Science Foundation of China (NSFC)(40830107 ; National Natural Science Foundation of China (NSFC)(40830107 ; French Commissariat a l'Energie Atomique (CEA) ; French Commissariat a l'Energie Atomique (CEA) ; French Commissariat a l'Energie Atomique (CEA) ; French Commissariat a l'Energie Atomique (CEA) ; Centre National de la Recherche Scientifique (CNRS) ; Centre National de la Recherche Scientifique (CNRS) ; Centre National de la Recherche Scientifique (CNRS) ; Centre National de la Recherche Scientifique (CNRS) ; 40676033 ; 40676033 ; 40676033 ; 40676033 ; 40621063 ; 40621063 ; 40621063 ; 40621063 ; 40821091 ; 40821091 ; 40821091 ; 40821091 ; 40925012) ; 40925012) ; 40925012) ; 40925012) ; National Natural Science Foundation of China (NSFC)(40830107 ; National Natural Science Foundation of China (NSFC)(40830107 ; National Natural Science Foundation of China (NSFC)(40830107 ; National Natural Science Foundation of China (NSFC)(40830107 ; French Commissariat a l'Energie Atomique (CEA) ; French Commissariat a l'Energie Atomique (CEA) ; French Commissariat a l'Energie Atomique (CEA) ; French Commissariat a l'Energie Atomique (CEA) ; Centre National de la Recherche Scientifique (CNRS) ; Centre National de la Recherche Scientifique (CNRS) ; Centre National de la Recherche Scientifique (CNRS) ; Centre National de la Recherche Scientifique (CNRS) ; 40676033 ; 40676033 ; 40676033 ; 40676033 ; 40621063 ; 40621063 ; 40621063 ; 40621063 ; 40821091 ; 40821091 ; 40821091 ; 40821091 ; 40925012) ; 40925012) ; 40925012) ; 40925012) ; National Natural Science Foundation of China (NSFC)(40830107 ; National Natural Science Foundation of China (NSFC)(40830107 ; National Natural Science Foundation of China (NSFC)(40830107 ; National Natural Science Foundation of China (NSFC)(40830107 ; French Commissariat a l'Energie Atomique (CEA) ; French Commissariat a l'Energie Atomique (CEA) ; French Commissariat a l'Energie Atomique (CEA) ; French Commissariat a l'Energie Atomique (CEA) ; Centre National de la Recherche Scientifique (CNRS) ; Centre National de la Recherche Scientifique (CNRS) ; Centre National de la Recherche Scientifique (CNRS) ; Centre National de la Recherche Scientifique (CNRS) ; 40676033 ; 40676033 ; 40676033 ; 40676033 ; 40621063 ; 40621063 ; 40621063 ; 40621063 ; 40821091 ; 40821091 ; 40821091 ; 40821091 ; 40925012) ; 40925012) ; 40925012) ; 40925012)
源URL[http://ir.iggcas.ac.cn/handle/132A11/74134]  
专题中国科学院地质与地球物理研究所
通讯作者Zheng, Hongbo
作者单位1.Nanjing Univ, Sch Earth Sci & Engn, Nanjing 210093, Peoples R China
2.Tongji Univ, Sch Ocean & Earth Sci, Shanghai 200092, Peoples R China
3.CEA CNRS UVSQ, Lab Sci Climat & Environm IPSL, F-91198 Gif Sur Yvette, France
4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Zheng, Yan,Zheng, Hongbo,Kissel, Catherine,et al. Sedimentation rate control on diagenesis, East China Sea sediments[J]. PHYSICS OF THE EARTH AND PLANETARY INTERIORS,2011,187(3-4):301-309.
APA Zheng, Yan,Zheng, Hongbo,Kissel, Catherine,&Laj, Carlo.(2011).Sedimentation rate control on diagenesis, East China Sea sediments.PHYSICS OF THE EARTH AND PLANETARY INTERIORS,187(3-4),301-309.
MLA Zheng, Yan,et al."Sedimentation rate control on diagenesis, East China Sea sediments".PHYSICS OF THE EARTH AND PLANETARY INTERIORS 187.3-4(2011):301-309.

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来源：地质与地球物理研究所

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