Experimental determination of the isotopic fractionation between gaseous CO2 and carbon dissolved in tholeiitic magma期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Experimental determination of the isotopic fractionation between gaseous CO2 and carbon dissolved in tholeiitic magma

Authors:	M Javoy F Pineau I Iiyama

Institution:	(1) Départment des Sciences de la Terre, Université Paris VII et LA CNRS 196, Laboratoire des Isotopes Stables. T. 54-64-ler étage-2, Place Jussieu, 75 005 Paris, France;(2) Centre de Recherches sur la synthèse et la chimie des Minéraux, CNRS, CNRS-rue de la Férollerie, 45 045 Orleans Cedex, France;(3) Present address: Geological Institute, Faculty of Sciences, University of Tokyo, Hongo Bunkyoku, Tokyo Bunkyoku, 113 Tokyo, Japan

Abstract:	Isotope fractionation of carbon between CO₂ and carbon dissolved in a tholeiitic magma measured in the range 1120–1280 ° C, 7.0–8.4 Kb varies from 4.6 to 4 in favor of CO₂. These results make possible to explain all deep seated ¹³C values from a restricted range of primary mantle ¹³C concentrations. They also suggest that carbon could be dissolved in basaltic magmas in a reduced form.

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