Geochemistry of Platinum Group and Rare Earth Elements of the   Polymetallic Layer in the Lower Cambrian, Weng&apos;an, Guizhou Province

doi:10.1111/j.1755-6724.2009.00044.x

CORC > 北京大学 > 地球与空间科学学院

	Geochemistry of Platinum Group and Rare Earth Elements of the Polymetallic Layer in the Lower Cambrian, Weng'an, Guizhou Province
	Fu Yong ; Wu Chaodong ; Guan Ping ; Qu Wenjun ; Chen Jiafu
刊名	acta geologica sinica english edition
	2009
关键词	geochemistry polymetallic layer hydrothermal activity Lower Cambrian MO-PGE-AU MID-ATLANTIC RIDGE BLACK SHALES SOUTH CHINA HYDROTHERMAL FLUIDS YTTRIUM RICH SUPERCONTINENT ENRICHMENT LAURENTIA
DOI	10.1111/j.1755-6724.2009.00044.x
英文摘要	The black shales of the Lower Cambrian Niutitang Formation in Weng'an, on the Yangtze platform of south China, contain voluminous polymetallic sulfide deposits. A comprehensive geochemical investigation of trace, rare earth, and platinum group elements (PGE) has been undertaken in order to discuss its ore genesis and correlation with the tectono-depositional setting. The ore-bearing layers enrich molybdenum (Mo), nickel (Ni), vanadium (V), lead (Pb), strontium (Sr), barium (Ba), uranium (U), arsenic (As), and rare earth elements (REE) in abundance. High uranium/thorium (U/Th) ratios (U/Th > 1) indicated that mineralization was mainly influenced by the hydrothermal process. The delta U value was above 1.9, showing a reducing sedimentary condition. The REE patterns showed high enrichment in light rare earth elements (LREE) (heavy rare earth elements (HREE) (LREE/HREE=5-17), slightly negative europium (Eu) and cerium (Ce) anomalies (delta Eu=0.81-0.93), and positive Ce anomalies (delta Ce=0.76-1.12). PGE abundance was characterized by the PGE-type distribution patterns, enriching platinum (Pt), palladium (Pd), ruthenium (Ru) and osmium (Os). The Pt/Pd ratio was 0.8, which is close to the ratios of seawater and ultramafic rocks. All of these geochemical features suggest that the mineralization was triggered by hydrothermal activity in an extensional setting in the context of break-up of the Rodinian supercontinent.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000266594900018&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Geosciences, Multidisciplinary; SCI(E); 中国科学引文数据库(CSCD); 3; ARTICLE; 3; 618-627; 83
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/246610]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Fu Yong,Wu Chaodong,Guan Ping,et al. Geochemistry of Platinum Group and Rare Earth Elements of the Polymetallic Layer in the Lower Cambrian, Weng'an, Guizhou Province[J]. acta geologica sinica english edition,2009.
APA	Fu Yong,Wu Chaodong,Guan Ping,Qu Wenjun,&Chen Jiafu.(2009).Geochemistry of Platinum Group and Rare Earth Elements of the Polymetallic Layer in the Lower Cambrian, Weng'an, Guizhou Province.acta geologica sinica english edition.
MLA	Fu Yong,et al."Geochemistry of Platinum Group and Rare Earth Elements of the Polymetallic Layer in the Lower Cambrian, Weng'an, Guizhou Province".acta geologica sinica english edition (2009).