Experimental Constraints on the Crystallization of Silica Phases in Silicic Magmas

C Martel,M Pichavant,I Di Carlo, R Champallier,G Wille,J M Castro, K Devineau,V O Davydova,A R L Kushnir

Journal of Petrology（2021）

引用 5|浏览10

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摘要

Low-pressure silica polymorphs, e.g. quartz (Qtz), tridymite (Trd), and cristobalite (Crs), are common in silicic magmas, but the conditions of their formation are still unclear. The stability fields of these polymorphs have been determined in the SiO2, SiO2–H2O, and haplogranite systems, but these simple systems are not directly applicable to silica polymorph crystallization in natural silicic ma...

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关键词

silica polymorph,silicic magma,crystallization,metastability,eruptive dynamics

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