Geochemical characteristics of seamount ferromanganese nodules from mid-Pacific Ocean

doi:10.1360/01we0017

	Geochemical characteristics of seamount ferromanganese nodules from mid-Pacific Ocean
	Bu, WR ; Shi, XF ; Peng, JT ; Qi, L
刊名	CHINESE SCIENCE BULLETIN
	2003-06
卷号	48 页码:98-105
关键词	seamount nodules REE PGE geochemistry occurring condition
ISSN号	1001-6538
DOI	10.1360/01we0017
英文摘要	Nine seamount ferromanganese nodules from six seamounts in the mid-Pacific Ocean have been sampled, the obtained sixteen sub-samples were used to analyze their main elements, trace elements and rare earth elements by the chemical method and ICP-MS, platinum group elements have also been analyzed for some subsamples, using the methods of Te co-precipitation pre-concentration and isotope dilution. All subsamples have been analyzed by X-ray diffraction for their mineral composition. It is shown from the analysis results that the mineral composition, chemical characteristics and the occurrence of main components of seamount nodules from mid-Pacific Ocean are similar to those of hydrogenous cobalt-rich crust on seamounts, which indicates that seamount nodules were hydrogenous. Compared with the ferromanganese nodules occurring on the surface of deep-sea sediments, seamount nodules have higher Fe and Co but lower Cu and Ni, so the seamount nodules from mid-Pacific Ocean might be formed on the surface of sediments on seamounts in weak acidic but strong oxidation environment. Because of their similar occurring depth and redox conditions, seamount nodules are very similar to cobalt-rich crust in their chemical composition, minerals and occurrence of main compositions. However, having been found on the sediment-seawater interface, seamount nodules experienced the influence of early-diagenesis of sediments, so the typical seamount crust has some characteristics of transition to ferromanganese nodules.
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000183335900015
内容类型	期刊论文
源URL	[http://ir.fio.com.cn/handle/2SI8HI0U/4830]
专题	自然资源部第一海洋研究所
作者单位	1.State Ocean Adm, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao 266061, Peoples R China; 2.Acad Sinica, Inst Geochem, Guiyang 550002, Peoples R China
推荐引用方式 GB/T 7714	Bu, WR,Shi, XF,Peng, JT,et al. Geochemical characteristics of seamount ferromanganese nodules from mid-Pacific Ocean[J]. CHINESE SCIENCE BULLETIN,2003,48:98-105.
APA	Bu, WR,Shi, XF,Peng, JT,&Qi, L.(2003).Geochemical characteristics of seamount ferromanganese nodules from mid-Pacific Ocean.CHINESE SCIENCE BULLETIN,48,98-105.
MLA	Bu, WR,et al."Geochemical characteristics of seamount ferromanganese nodules from mid-Pacific Ocean".CHINESE SCIENCE BULLETIN 48(2003):98-105.