Geochemical characteristics of an intracontinental shoshonitic association: the example of the Damavand volcano,IranCaractéristiques géochimiques d'une association shoshonitique intracontinentale : exemple du Damavand,Iran |
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| Authors: | Hossein Mehdizadeh Jean-Michel Liotard Jean-Marie Dautria |
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| Affiliation: | 1. Department of Geology, Shahrood University, Iran;2. Isteem, CNRS UMR 5573, université Montpellier-2, place Eugène-Bataillon, 34095 Montpellier cedex 5, France;3. Isteem, CNRS UMR 5568, université Montpellier-2, place Eugène-Bataillon, 34095 Montpellier cedex 5, France |
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| Abstract: | Lavas of the Quaternary Damavand volcano (Central Alborz, Northern Iran) have been analysed for major and trace elements. The shoshonitic character of this magmatic series is definitively confirmed and most samples correspond to banakites. The Nb, Ta and Ti negative anomalies observed in all lavas suggest that they derive from of a sub-continental lithosphere metasomatised in a subduction setting. Their variable trace element enrichments are explained both by mineral fractionation and by crustal contamination in a shallow magmatic chamber. To cite this article: H. Mehdizadeh et al., C. R. Geoscience 334 (2002) 111–117. |
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| Keywords: | absarokite banakite trace elements subduction crustal contamination Damavand Iran absarokite banakite éléments en traces contamination crustale subduction Damavand Iran Géochimie Geochemistry |
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