Thursday, December 8, 2011

What is the type of energy transfer in contact metamorphism?

convection, conduction or radiation|||To have a convectional heat transfer, a liquid /gaseous state is necessary. Metamorphism is essentially a change in SOLID State. So there cannot be any Convection.


Energy transfer through Radiation occurs when the two objects (the one losing heat and the one gaining) are not in contact, with or without any medium in between them. In contact metamorphism, the country rocks are in direct contact with magma or lava or some other heat source and hence the energy transfer cannot be through radiation.


Conduction is the way of energy transfer, when two objects are in contact. |||Contact Metamorphism occurs when rocks are heated by very hot materials, such as magma, lava or cooling plutonic bodies. The degree of metamorphism is greatest near the hot material, decreasing away from that material..^_^ |||Conduction.





There may be some minor radiation, as some minerals do let infrared light pass through them

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