First data on magma ascent and residence times retrieved from Fe-Mg and trace element zonation in olivine phenocrysts from Kamchatka basalts

• Main Authors: Gordeychik Boris, Churikova Tatiana, Kronz Andreas, Simakin Alexander, Wörner Gerhard
• Format: Text
• Language: English
• Published: 2016
• Subjects: 38.37.25 Вулканология; Острый Толбачик; Плоский Толбачик; Шивелуч; Ключевской; Tolbachik; Kamchatka
• Online Access: http://repo.kscnet.ru/2944/; http://repo.kscnet.ru/2944/1/Gordeychik_2016%20EGU.pdf; http://meetingorganizer.copernicus.org/EGU2016/EGU2016-12839.pdf

Compositional zonation in olivine phenocrysts and diffusion modelling have been used in the last ten years to estimate magma residence times and the duration of magma ascent. The fundamental assumption is that mixing with newly injected magma into a reservoir triggers diffusional exchange between ma...