prograde metamorphism

prograde metamorphism

[¦prō′grād ‚med·ə′mȯr‚fiz·əm]
(geology)
Metamorphic changes in response to a higher pressure or temperature than that to which the rock was last adjusted.
References in periodicals archive ?
The metamorphic rocks in the Arquia valley were affected by prograde metamorphism, which was followed by a retrograde event after reaching maximum temperature and pressure conditions.
The relationships among the various types of rocks that form the Arquia Group are consistent with prograde metamorphism.
The prograde metamorphism was followed by a retrograde metamorphic event that affected the mineral associations formed at the metamorphic peak.
Accordingly, during the prograde metamorphism that affected the Arquia Group, the rocks with mineral assemblages formed under greenschist facies conditions reached temperatures of 433[degrees]C and pressures of 11.
1] show a prograde metamorphism event with a continuous increase in temperature and pressure.
Comment on Redistribution of trace elements during prograde metamorphism from lawsonite blueschist to eclogite facies; implications for deep subduction-zone processes by C.
Widespread garnet and cordierite in these rocks formed by breakdown of biotite and sillimanite, which indicates prograde metamorphism.
Comment on "Redistribution of trace elements during prograde metamorphism from lawsonite blueschist to eclogite facies; implications for deep subduction-zone processes" by C.
Prograde metamorphism and devolatilization reactions liberate water and C[O.