Exhalative metasediments - clues to the real nature of regional metamorphic processes?
Regional metamorphic petrogenetic theory is currently dominated by the hypothesis that the principal grade indicator silicates and their related minerals arise by a variety of chemical reactions. It is postulated that, with rise (or fall) in regional crustal temperature and pressure, original materials become destabilized, break down, and are dissolved in the intergranular "metamorphic fluid". The resulting ions then diffuse within, and are transported by, this fluid, in due course reacting...[Show more]
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|Source:||Mineralogy and Petrology|