NDLI: Rare earth element geochemistry of hydrothermal deposits from Southwest Indian Ridge

Content Provider	Springer Nature Link
Author	Cao, Zhimin Cao, Hong Tao, Chunhui Li, Jun Yu, Zenghui Shu, Liping
Copyright Year	2012
Abstract	The REE compositions of hydrothermal deposits and basalt samples from the Southwest Indian Ridge (SWIR) were determined with ICP-MS. The results show that there are significant differences between different types of samples although all samples show relative LREE enrichment. The contents of REE in hydrothermal sulfides and alterated rocks samples are lower (from 7.036×10$^{−6}$ to 23.660×10$^{−6}$), while those in the white chimney deposits are relatively higher (ranging from 84.496×10$^{−6}$ to 103.511×10$^{−6}$). Both of them are lower than basalts. Chondrite-normalized REE distribution patterns show that sulfides and alterated rocks samples are characterized by significant positive Eu anomalies. On the contrary, white chimney deposits have obvious negative Eu anomalies, which may be caused by abundant calcite existing in the white chimney samples. Both the content and distribution pattern of REE in sulfides suggest that REE most possibly is originally derived from hydrothermal fluids, but influenced by the submarine reducing ore-forming environment, seawater convection, mineral compositions as well as the constraint of mineral crystallizations.
Starting Page	62
Ending Page	69
Page Count	8
File Format	PDF
ISSN	0253505X
Journal	Acta Oceanologica Sinica
Volume Number	31
Issue Number	2
e-ISSN	18691099
Language	English
Publisher	The Chinese Society of Oceanography
Publisher Date	2012-04-13
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	rare earth element hydrothermal deposits Southwest Indian Ridge Engineering Fluid Dynamics Ecology Climate Change Oceanography Marine & Freshwater Sciences Environmental Chemistry
Content Type	Text
Resource Type	Article
Subject	Aquatic Science Oceanography

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