Published on : 2017-05-19 08:30:00

Please enable JavaScript to use all the features on this page. The lack of any δ 13C correlation between organic matter and carbonate in the Franceville basin does not allow the consideration of a massive and global oxidation event. Nous présentons ici les mesures isotopiques effectuées dans le bassin de Franceville pour discuter ces deux hypothèses. ScienceDirect JavaScript is disabled on your browser.

Here we present the isotope data available in the Franceville basin in order to discuss these two interpretations. Inversely, Gauthier-Lafaye and Weber (2003) invoke the possible action of methanotrophic microorganisms to explain the δ 13C values as low as –46‰ measured in the Franceville basin. (2011) suggèrent l’existence d’une oxydation globale et massive pendant la période 1980 à 2090 Ma, qui suit le Grand Évènement oxydant (GOE) (2450–2320 Ma) (Bekker et al isotopic dating sydney basin. Previous article in issueScienceDirect JavaScript is disabled on your browser.

L’absence de corrélation entre les valeurs de δ 13C des matières organiques et des carbonates ne permet pas d’envisager une période d’oxydation massive et globale dans le bassin de Franceville. (2011) suggested the occurrence of a massive and global oxidation event during the period of 1980–2090 Ma, which follows the Great Oxidation Event (2450–2320 Ma) (Bekker et al. .free sexcams without registration.
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