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	Provedor de dados ArchiMer (2) Autor Sepulcre, Sophie (2) Bard, Edouard (1) Bassinot, Frank (1) Colin, Christophe (1) Douville, Eric (1) Duchamp-alphonse, Stephanie (1) Meynadier, Laure (1) Song, Lina (1) Tachikawa, Kazuyo (1) Thouveny, Nicolas (1) Vidal, Laurence (1) Wan, Shiming (1) Wu, Qiong (1) Xu, Zhaokai (1) Yu, Zhaojie (1) Mais... Palavra-chave Caribbean Sea (1) Mg-calcite preservation state (1) Mg/Ca in Mg-calcite (1) Mid-Pleistocene (1) Tipo do documento Text (2) Ano 2017 (1) 2009 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Yttrium and rare earth element partitioning in seawaters from the Bay of Bengal ArchiMer Yu, Zhaojie; Colin, Christophe; Douville, Eric; Meynadier, Laure; Duchamp-alphonse, Stephanie; Sepulcre, Sophie; Wan, Shiming; Song, Lina; Wu, Qiong; Xu, Zhaokai; Bassinot, Frank. The dissolved Yttrium (Y) and Rare Earth Element (REE) concentrations of seawater samples collected along a north-south hydrological transect within the Bay of Bengal (BoB) have been analyzed to estimate contributions of the Ganges and Brahmaputra (G-B) river inputs to the dissolved REE distribution of the Northern Indian Ocean. Surface water masses of the BoB are characterized by Y/Ho ratios (84) intermediate between the G-B river suspended sediment (41) and water mass from the South Indian Ocean (93). Co-variation of MREE (Middle REE, Sm) and LREE (Light REE, La) concentrations suggests that the dissolved REEs in surface waters (upper 100 m depth) of the BoB (Sm/La = 0.21) appear to derive mainly from the freshwater discharge of the G-B river system. In... Tipo: Text Ano: 2017 URL: https://archimer.ifremer.fr/doc/00377/48845/49277.pdf Preservation state of metastable magnesian calcite in periplatform sediments from the Caribbean Sea over the last million years ArchiMer Sepulcre, Sophie; Tachikawa, Kazuyo; Vidal, Laurence; Thouveny, Nicolas; Bard, Edouard. Carbonate-rich periplatform sediments represent an active carbon reservoir containing metastable aragonite and magnesian calcite (Mg-calcite, > 4 mol % MgCO(3)). Since Mg-calcite is highly soluble, the preservation state of this mineral provides information on past carbonate systems at water depths shallower than the lysocline. The mineralogy and geochemistry of the carbonate-rich fine fraction (< 63 mu m) was determined for the last 940 ka in a sediment core collected from the Walton Basin (Northern Caribbean Sea, 846 m water depth). Mg/Ca ratios for Mg-calcite showed clear glacial-interglacial cycles with high values (12 mol % MgCO(3)) during interglacials. Glacial Mg/Ca ratios were approximately 8 mol % MgCO(3) for the period from 940 ka to 400... Tipo: Text Palavras-chave: Mg-calcite preservation state; Mg/Ca in Mg-calcite; Caribbean Sea; Mid-Pleistocene. Ano: 2009 URL: https://archimer.ifremer.fr/doc/00218/32908/31417.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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