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	Manganese abnormity in holocene Sediments of the Bohai Sea
	Liu, Jianguo; Li, Anchun; Xu, Zhaokai; Xu, Fangjian
刊名	JOURNAL OF CHINA UNIVERSITY OF GEOSCIENCES
	2007-06-01
卷号	18期号:2页码:135-141
关键词	Manganese Almormity Holocene Sediment Sedimentation Rate Bohai Sea
ISSN号	1002-0705
文献子类	Article
英文摘要	Manganese abnormity has been observed in the Holocene sediments of the mud area of Bohai Sea. On the basis of grain size, chemical composition, heavy mineral content and accelerator mass spectrometry (AMS) C-14 dating of foraminifer, relationships between manganese abnormity and sedimentation rates, material source, hydrodynamic conditions are probed. Manganese abnormity occurred during the Middle Holocene when sea level and sedimentation rates were higher than those at present. Sedimentary hiatus was not observed when material sources and hydrodynamic conditions were quite similar. Compared with the former period, the latter period showed a decrease in reduction environment and an inclination toward oxidation environment with high manganese content, whereas provenance and hydrodynamic conditions showed only a slight change. From the above observations, it can be concluded that correlation among manganese abnormity, material source, and hydrodynamic conditions is not obvious. Redox environment seems to be the key factor for manganese enrichment, which is mainly related to marine authigenic process.; Manganese abnormity has been observed in the Holocene sediments of the mud area of Bohai Sea. On the basis of grain size, chemical composition, heavy mineral content and accelerator mass spectrometry (AMS) C-14 dating of foraminifer, relationships between manganese abnormity and sedimentation rates, material source, hydrodynamic conditions are probed. Manganese abnormity occurred during the Middle Holocene when sea level and sedimentation rates were higher than those at present. Sedimentary hiatus was not observed when material sources and hydrodynamic conditions were quite similar. Compared with the former period, the latter period showed a decrease in reduction environment and an inclination toward oxidation environment with high manganese content, whereas provenance and hydrodynamic conditions showed only a slight change. From the above observations, it can be concluded that correlation among manganese abnormity, material source, and hydrodynamic conditions is not obvious. Redox environment seems to be the key factor for manganese enrichment, which is mainly related to marine authigenic process.
学科主题	Geology ; Geosciences, Multidisciplinary
语种	英语
WOS记录号	WOS:000247893500004
公开日期	2010-12-24
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/5047]
专题	海洋研究所_海洋地质与环境重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.Grad Univ, Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu, Jianguo,Li, Anchun,Xu, Zhaokai,et al. Manganese abnormity in holocene Sediments of the Bohai Sea[J]. JOURNAL OF CHINA UNIVERSITY OF GEOSCIENCES,2007,18(2):135-141.
APA	Liu, Jianguo,Li, Anchun,Xu, Zhaokai,&Xu, Fangjian.(2007).Manganese abnormity in holocene Sediments of the Bohai Sea.JOURNAL OF CHINA UNIVERSITY OF GEOSCIENCES,18(2),135-141.
MLA	Liu, Jianguo,et al."Manganese abnormity in holocene Sediments of the Bohai Sea".JOURNAL OF CHINA UNIVERSITY OF GEOSCIENCES 18.2(2007):135-141.

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