Volatile contents of mafic-to-intermediate magmas at San Cristóbal volcano in Nicaragua

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• 作者：P. Robidoux^a ; ^b ; ^{robidouxphilippe@gmail.com} ; A. Aiuppa^a ; ^b ; S.G. Rotolo^a ; ^b ; A.L. Rizzo^b ; E.H. Hauri^c ; M.L. Frezzotti^d
• 关键词：San Crist&oacute ; bal ; Volatiles ; Melt inclusions ; NanoSIMS ; Multi-GAS ; Noble gases
• 刊名：Lithos
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：272-273
• 期：Complete
• 页码：147-163
• 全文大小：2896 K
• 卷排序：272

文摘

San Cristóbal magma initiates outgassing between 7.4 and 16 km depths. Volatile solubility is controlled by polybaric crystal fractioning and CO2 fluxing. Raman corrections for postentrapment CO2 loss constrain deeper source. Homogeneous 3He/4He ratios indicate a common MORB-like mantle for erupted magmas. C-rich signature of San Cristóbal volcanic plume traces subducting sediment.