Volatile (F and Cl) concentrations in Iwate olivine-hosted melt inclusions indicating low-temperature subduction - Université Clermont Auvergne Accéder directement au contenu
Article Dans Une Revue Earth Planets and Space Année : 2014

Volatile (F and Cl) concentrations in Iwate olivine-hosted melt inclusions indicating low-temperature subduction

Résumé

Investigation of olivine-hosted melt inclusions provides information about the abundance of volatile elements that are often lost during subaerial eruptions of lavas. We have measured the abundances of H2O, CO2, F, Cl, and S as well as Pb isotopes in 29 melt inclusions in the scoria of the 1686 eruption of the Iwate volcano, a frontal-arc volcano in the northeast Japan arc. Pb Isotope compositions identify that Iwate magma is derived from a mixture of depleted mantle, subducted basalt, and sediment. Systematics of F in comparison to MORB and other arc magma indicates that (1) the slab surface temperature must be among the lowest on Earth and (2) hydrous minerals, such as amphibole, humites, and/or mica, must be present as residual phases during the dehydration of the slab.
Fichier principal
Vignette du fichier
Earth Planet Space 2014 Rose-Koga.pdf (632.02 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-01133686 , version 1 (17-01-2018)

Identifiants

Citer

Estelle F. Rose-Koga, Kenneth T. Koga, Morihisa Hamada, Thomas Hélouis, Martin J. Whitehouse, et al.. Volatile (F and Cl) concentrations in Iwate olivine-hosted melt inclusions indicating low-temperature subduction. Earth Planets and Space, 2014, 66, pp.81. ⟨10.1186/1880-5981-66-81⟩. ⟨hal-01133686⟩
101 Consultations
91 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More