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- A typical clockwise P-T-t path representing a collision or subduction setting. Prograde metamorphism occurred upon increasing P-T environment until reaching the peak, followed by near-isothermal decompression , and further exhumation and erosion . (en)
- During the formation of a fault-bend-fold, the lower segment is heated while the upper thrust sheet is cooled because of thrusting. (en)
- A common clockwise P-T-t path observed in reality. (en)
- A typical clockwise P-T-t path . (en)
- Garnet zones grow from core to rim. Each concentric garnet zone displays different chemical compositions, indicating different P-T conditions. (en)
- Intrusion of magma results in a great increment in temperature and a slight increase in pressure experienced by the underlying rocks, which gives prograde metamorphism. Cooling of erupted magma causes a near-isobaric temperature drop and leads to retrograde metamorphism of the underlying rocks. (en)
- Multiple thrusting such as duplexes would result in complex thermal profile of the rocks. (en)
- Investigating the compositions in each garnet zone can supply information about the different P-T points as well as the trend of the P-T path. (en)
- A typical anticlockwise P-T-t path representing an intrusion origin. A great temperature increment during prograde metamorphism due to overlying hot magma, followed by near-isobaric cooling in retrograde metamorphism when the magma cools. (en)
- In continental collision setting, crustal thickening takes place, which brings about prograde metamorphism of underlying rocks. Continuous compression results in the development of thrust belts, which leads to a great drop in pressure experienced by originally underlying rocks and results in near-isothermal decompression . Exhumation and erosion further promote a decrease in P-T condition . (en)
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