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	Provedor de dados ArchiMer (2) Autor Baker, Edward T. (1) Briais, Anne (1) Chen, Yongshun John (1) Christie, D. (1) Cochran, James R. (1) Fouchet, C. (1) Francheteau, J. (1) Geli, Louis (1) Hemond, Christophe (1) Labails, C. (1) Lee, T. C. (1) Maia, Marcia (1) Scheirer, Daniel S. (1) Walker, Sharon L. (1) Wang, Tingting (1) Mais... Palavra-chave Southeast Indian Ridge (2) Hydrothermal activity (1) Magmatic budget (1) Mantle hot spot (1) Mantle temperature (1) Mid-ocean ridge (1) Plume incidence (1) Seafloor subsidence (1) Mais... Tipo do documento Text (2) Ano 2014 (1) 2007 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Correlated patterns in hydrothermal plume distribution and apparent magmatic budget along 2500 km of the Southeast Indian Ridge ArchiMer Baker, Edward T.; Hemond, Christophe; Briais, Anne; Maia, Marcia; Scheirer, Daniel S.; Walker, Sharon L.; Wang, Tingting; Chen, Yongshun John. Multiple geological processes affect the distribution of hydrothermal venting along a mid-ocean ridge. Deciphering the role of a specific process is often frustrated by simultaneous changes in other influences. Here we take advantage of the almost constant spreading rate (65–71 mm/yr) along 2500 km of the Southeast Indian Ridge (SEIR) between 77°E and 99°E to examine the spatial density of hydrothermal venting relative to regional and segment-scale changes in the apparent magmatic budget. We use 227 vertical profiles of light backscatter and (on 41 profiles) oxidation-reduction potential along 27 first and second-order ridge segments on and adjacent to the Amsterdam-St. Paul (ASP) Plateau to map ph, the fraction of casts detecting a plume. At the regional... Tipo: Text Palavras-chave: Hydrothermal activity; Plume incidence; Magmatic budget; Southeast Indian Ridge; Mid-ocean ridge; Mantle hot spot. Ano: 2014 URL: https://archimer.ifremer.fr/doc/00217/32849/31310.pdf Thermal regime of the Southeast Indian Ridge between 88°E and 140°E: Remarks on the subsidence of the ridge flanks ArchiMer Geli, Louis; Cochran, James R.; Lee, T. C.; Francheteau, J.; Labails, C.; Fouchet, C.; Christie, D.. The flanks of the Southeast Indian Ridge are characterized by anomalously low subsidence rates for the 0-25 Ma period: less than 300 m Ma(-1/2) between 101 degrees E and 120 degrees E and less than 260 m Ma(-1/2) within the Australian-Antarctic Discordance (AAD), between 120 degrees E and 128 degrees E. The expected along-axis variation in mantle temperature (similar to 50 degrees C) is too small to explain this observation, even when the temperature dependence of the mantle physical properties is accounted for. We successively analyze the effect on subsidence of different factors, such as variations in crustal thickness; the dynamic contribution of an old, detached slab supposedly present within the mantle below the AAD; and depletion in phi(m), a... Tipo: Text Palavras-chave: Southeast Indian Ridge; Seafloor subsidence; Mantle temperature. Ano: 2007 URL: http://archimer.ifremer.fr/doc/00068/17898/15449.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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