Thesis / Dissertation

Topics in Theoretical Metamorphic Petrology

Catherine Jane Wheller, Roger Powell (ed.)

Published : 2019

Abstract

The aim of this thesis is to progress research on three factors influencing phase equilibrium modelling of metamorphic rocks. The first involves updating the activity-composition model for the ilmenite-hematite solid solution so that the P-T conditions for the evolution of rocks containing ilmenite can be modelled across a wider range of composition. The second investigates how to model high-grade rocks that have equilibrated domainally. The third explores whether mechanical closure can be a primary control on mineral assemblage evolution in subsolidus rocks. A new thermodynamic model suitable for the ilmenite-hematite solid solution has been calibrated in the system FMTOMn (FeO-MgO-TiO2-Fe..

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