Tectonic interpretation of metamorphic tectonites: integrating compositional mapping, microstructural analysis and in situ monazite dating

摘要: Interpreting tectonic histories from metamorphic tectonites requires an understanding of the linkages and feedbacks between deformation metamorphism. Relationships metamorphism can be divided into two broad groups: active passive. Active relationships involve direct interactions whereby directly influences reactions or affects rate style deformation. One most important ‘active’ is role that plays in helping to remove unstable reactant phases promote growth stable product phases. Passive are correlations allow history integrated with history. Compositional mapping major accessory especially maps larger thin section domains particularly valuable for evaluating strain partitioning, scales equilibrium, textures deformational fabrics, particular, interpreting geochronological data. Petrological pseudosections increasingly utilized tool microtextures linking deformation, metamorphism, large-scale tectonics. In situ geochronology petrological analysis chronometer (i.e. monazite, xenotime, titanite, allanite, etc.) a critical part rocks. The electron microprobe essential characterizing placing them context silicate fabrics textures.