Data/hora: 09/06/2024 14:39:14

Provedor de dados: 	5	
País: 	France	
Título: 	Fe-Si Oxides Tracing the Ongoing Low-T° Hydrothermal Alteration of Exhumed Serpentinites at the Ultraslow-spreading Southwest Indian Ridge	
Autores: 	Karpoff, A. M.; Sauter, D.; Cannat, M.; Ulrich, M.; Manatschal, G.	
Data: 	2017	
Ano: 	2017	
Palavras-chave: 	Si-Fe-oxides; Hydrothermalism; Seawater-dominated fluids; Serpentinites; Mantle exhumation; Indian Ocean; SWIR.	
Resumo: 	On the smooth seafloor of exhumed mantle-rocks of the slow-spreading Southwest Indian Ridge, the secondary oxide and carbonate mineralizations record specific chemical signatures of the alteration of serpentinites by low-temperature hydrothermal seawater-dominated fluids. The uncommon characteristics of Fe-oxides forming nodule cortex or thick encrustments are their high Si, low Mn contents, trace elements (e.g. Cr) and REE behavior. Oxides composition evolves through time. Associated to oxides, carbonates (aragonite, calcite, dolomite) characterize the matrix of young indurated serpentinite breccias found at ridge axis. Such mineralogical and geochemical sequences trace, as proxies, the ongoing mantle-exhumation and serpentinization process linked to the detachment faults, and the late alteration reactions that impact on crust–ocean transfers and oceanic budget.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	https://archimer.ifremer.fr/doc/00367/47771/47821.pdf

DOI:10.1016/j.proeps.2016.12.055

https://archimer.ifremer.fr/doc/00367/47771/	
Editor: 	Elsevier Science Bv	
Formato: 	application/pdf	
Fonte: 	Procedia Earth and Planetary Science (1878-5220) (Elsevier Science Bv), 2017 , Vol. 17 , P. 280-283	
Fonte: 	2017 Published by Elsevier B.V. this is an open access article under the CC BY-NC-ND license

info:eu-repo/semantics/openAccess

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