3D gravity inversion and thermodynamic modelling reveal properties of shallow silicic magma reservoir beneath Laguna del Maule, Chile

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• 作者：Craig A. Miller^a ; ^b ; ^{c.miller@gns.cri.nz} ; Glyn Williams-Jones^a ; Dominique Fournier^c ; Jeff Witter^d
• 关键词：Bouguer gravity ; inversion ; MELTS ; rhyolite ; thermodynamics ; volatiles
• 刊名：Earth and Planetary Science Letters
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：459
• 期：Complete
• 页码：14-27
• 全文大小：3895 K
• 卷排序：459

文摘

Novel mixed-norm gravity inversion algorithm from a new open-source code presented. MELTS thermodynamic modelling used to constrain gravity inversion and interpret results. Accounting for free volatile phase in magma critical in explaining gravity model. High melt percent (>85%) volatile rich, shallow, 30 km3, magma reservoir imaged. Close relationship of magma system to regional scale faulting and ongoing deformation.