Iron fertilisation and biogeochemical cycles in the sub-Arctic northwest Pacific during the late Pliocene intensification of northern hemisphere glaciation

doi:10.1016/j.epsl.2011.05.029

	Iron fertilisation and biogeochemical cycles in the sub-Arctic northwest Pacific during the late Pliocene intensification of northern hemisphere glaciation
	Bailey, Ian 1; Liu, Qingsong 2; Swann, George E. A.3; Jiang, Zhaoxia 2; Sun, Youbin 4; Zhao, Xiang 1; Roberts, Andrew P.1
刊名	EARTH AND PLANETARY SCIENCE LETTERS
	2011-07-15
卷号	307 期号:3-4 页码:253-265
关键词	Aeolian Dust Volcanic Glass Ice Rafted Debris North Pacific Nutrient Use Northern Hemisphere Glaciation
ISSN号	0012-821X
DOI	10.1016/j.epsl.2011.05.029
文献子类	Article
英文摘要	Increases in the low-field mass-specific magnetic susceptibility (chi), dropstones and the terrigenous sediment component from Ocean Drilling Program (ODP) Site 882 (similar to 45 degrees N) have been interpreted to indicate a major onset of ice-rafting to the sub-Arctic northwest Pacific Ocean during marine isotope stage (MIS) G6 (from similar to 2.75 Ma). In contrast, studies of the terrigenous content of sediments cored downwind of ODP Site 882 indicate that dust and disseminated volcanic ash deposition in the sub-Arctic Pacific increased markedly during MIS G6. To investigate the relative contribution of dust, volcanic ash and ice rafting to the Pliocene chi increase, we present new high-resolution environmental magnetic and ice-rafted debris records from ODP Sites 882 and 885. Our results demonstrate that the chi increase at both sites across MIS G6 is predominantly controlled by a previously overlooked mixture of aeolian dust and volcanic ash. Our findings call into question the reliability of chi as a proxy for ice-rafting to the North Pacific. They also highlight a previously undocumented link between iron fertilisation and biogeochemical cycling in the North Pacific at a key stage during intensification of late Pliocene northern hemisphere glaciation. (C) 2011 Elsevier B.V. All rights reserved.
WOS关键词	ICE-RAFTED DETRITUS ; CHINESE LOESS PLATEAU ; MAGNETIC-SUSCEPTIBILITY ; SOUTHERN-OCEAN ; EOLIAN DEPOSITION ; PHYTOPLANKTON PRODUCTIVITY ; ENVIRONMENTAL MAGNETISM ; MARINE-SEDIMENTS ; ATLANTIC SECTOR ; HEINRICH EVENTS
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000293258300002
资助机构	US National Science Foundation ; US National Science Foundation ; Marie Curie Fellowship (IIF)(7555) ; Marie Curie Fellowship (IIF)(7555) ; NERC(NE/F012969/1) ; NERC(NE/F012969/1) ; US National Science Foundation ; US National Science Foundation ; Marie Curie Fellowship (IIF)(7555) ; Marie Curie Fellowship (IIF)(7555) ; NERC(NE/F012969/1) ; NERC(NE/F012969/1) ; US National Science Foundation ; US National Science Foundation ; Marie Curie Fellowship (IIF)(7555) ; Marie Curie Fellowship (IIF)(7555) ; NERC(NE/F012969/1) ; NERC(NE/F012969/1) ; US National Science Foundation ; US National Science Foundation ; Marie Curie Fellowship (IIF)(7555) ; Marie Curie Fellowship (IIF)(7555) ; NERC(NE/F012969/1) ; NERC(NE/F012969/1)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/73675]
专题	中国科学院地质与地球物理研究所
通讯作者	Bailey, Ian
作者单位	1.Univ Southampton, Natl Oceanog Ctr, Sch Ocean & Earth Sci, Southampton SO14 3ZH, Hants, England 2.Chinese Acad Sci, Inst Geol & Geophys, Paleomagnetism & Geochronol Lab SKL LE, Beijing 100029, Peoples R China 3.Univ Nottingham, Sch Geog, Nottingham NG7 2RD, England 4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China
推荐引用方式 GB/T 7714	Bailey, Ian,Liu, Qingsong,Swann, George E. A.,et al. Iron fertilisation and biogeochemical cycles in the sub-Arctic northwest Pacific during the late Pliocene intensification of northern hemisphere glaciation[J]. EARTH AND PLANETARY SCIENCE LETTERS,2011,307(3-4):253-265.
APA	Bailey, Ian.,Liu, Qingsong.,Swann, George E. A..,Jiang, Zhaoxia.,Sun, Youbin.,...&Roberts, Andrew P..(2011).Iron fertilisation and biogeochemical cycles in the sub-Arctic northwest Pacific during the late Pliocene intensification of northern hemisphere glaciation.EARTH AND PLANETARY SCIENCE LETTERS,307(3-4),253-265.
MLA	Bailey, Ian,et al."Iron fertilisation and biogeochemical cycles in the sub-Arctic northwest Pacific during the late Pliocene intensification of northern hemisphere glaciation".EARTH AND PLANETARY SCIENCE LETTERS 307.3-4(2011):253-265.