Characteristics of a ridge-transform inside corner intersection and associated mafic-hosted seafloor hydrothermal field (14.0°S, Mid-Atlantic Ridge)

doi:10.1007/s11001-013-9209-1

CORC > 自然资源部第一海洋研究所 > 自然资源部第一海洋研究所 > 业务部门 > 海洋地质与地球物理研究室

	Characteristics of a ridge-transform inside corner intersection and associated mafic-hosted seafloor hydrothermal field (14.0°S, Mid-Atlantic Ridge)
	Li, Bing 1,2,3; Yang, Yaomin 2,4; Shi, Xuefa 2; Ye, Jun 2; Gao, Jingjing 2; Zhu, Aimei 2; Shao, Mingjuan 2,5
刊名	Marine Geophysical Research
	2014
卷号	35 期号:1 页码:55-68
关键词	Cerium compounds
ISSN号	00253235
DOI	10.1007/s11001-013-9209-1
英文摘要	Morphotectonic analysis of the inside corner intersection (14.0°S) between the southern Mid-Atlantic Ridge and the Cardno fracture zone indicate a young rough massif emerging after the termination of a previous oceanic core complex. The massif, which hosts an off-axis hydrothermal field, is characterized by a magmatic inactive volcanic structure, based on geologic mapping and sample studies. Mineralogical analyses show that the prominent hydrothermal deposit was characterized by massive pyrite-marcasite breccias with silica-rich gangue minerals. Geochemical analyses of the sulfide breccias indicate two element groups: the Fe-rich ore mineral group and silica-rich gangue mineral group. Rare earth element distribution patterns showing coexistence of positive Eu anomalies and negative Ce anomalies suggest that sulfides were precipitated from diffused discharge resulted from mixing between seawater and vent fluids. Different from several low temperature hydrothermal systems occurring on other intersection dome-like massifs that are recognized as detachment fault surfaces associated with variably metamorphosed ultramafic rocks, the 14.0°S field, hosted in gabbroic-basaltic substrate, is inferred to be of a high temperature system and likely to be driven by deep high temperature gabbroic intrusions. Additionally, the subsurface fossil detachment fault is also likely to play an important role in focusing hydrothermal fluids. © 2013 Springer Science+Business Media Dordrecht.
语种	英语
出版者	Kluwer Academic Publishers
内容类型	期刊论文
源URL	[http://ir.fio.com.cn/handle/2SI8HI0U/6718]
专题	业务部门_海洋地质与地球物理研究室
作者单位	1.Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China;; 2.First Institute of Oceanography, State Oceanic Administration, Qingdao, 266061, China;; 3.University of Chinese Academy of Sciences, Beijing, 100049, China;; 4.National Deep Sea Center, State Oceanic Administration, Qingdao, 266061, China;; 5.China University of Geosciences, Beijing, 100083, China
推荐引用方式 GB/T 7714	Li, Bing,Yang, Yaomin,Shi, Xuefa,et al. Characteristics of a ridge-transform inside corner intersection and associated mafic-hosted seafloor hydrothermal field (14.0°S, Mid-Atlantic Ridge)[J]. Marine Geophysical Research,2014,35(1):55-68.
APA	Li, Bing.,Yang, Yaomin.,Shi, Xuefa.,Ye, Jun.,Gao, Jingjing.,...&Shao, Mingjuan.(2014).Characteristics of a ridge-transform inside corner intersection and associated mafic-hosted seafloor hydrothermal field (14.0°S, Mid-Atlantic Ridge).Marine Geophysical Research,35(1),55-68.
MLA	Li, Bing,et al."Characteristics of a ridge-transform inside corner intersection and associated mafic-hosted seafloor hydrothermal field (14.0°S, Mid-Atlantic Ridge)".Marine Geophysical Research 35.1(2014):55-68.