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Sagot :
Answer:
Contact Metamorphism - Heat
The heat is the main cause, cooling magma affects the rock adjacent to an intrusive body.
Dynamic Metamorphism - directed pressure
It takes place due to grinding two large blocks of rock in a fault zone which causes a directed pressure that leads to heat and the formation of these metamorphisms.
Regional - surrounding pressure
A heat and lithostatic pressure come from depth within the earth.
Impact - Meteorite
By collision of meteorite to earth very high amount of kinetic energy is converted instantaneously to heat and differential stress.
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