Metamorphic rock Origin Metamorphic rocks arise from the transformation of existing rock types Process called metamorphism, which means "change in form". The original rock is subjected to heat and pressure, causing profound physical and/or chemical change Formation zone (ratio of heat and pressure) upper zone - epizone middle zone - mezozone lower zone – katazone Types of metamorphism Regional metamorphism -- affects a large area; commonly due to mountain building; foliated rocks common Contact metamorphism -- rocks near igneous intrusion get baked; produces non-foliated met. Rocks
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Origin Metamorphic rocks arise from the transformation of existing rock types Process called metamorphism, which means "change in form". The original rock.
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Metamorphic rockOrigin Metamorphic rocks arise from the transformation of existing rock types
Process called metamorphism, which means "change in form".
The original rock is subjected to heat and pressure, causing profound physical and/or chemical change
Formation zone (ratio of heat and pressure)
upper zone - epizone middle zone - mezozone
lower zone – katazone
Types of metamorphism
Regional metamorphism -- affects a large area; commonly due to mountain building; foliated rocks common
Contact metamorphism -- rocks near igneous intrusion get baked; produces non-foliated met. Rocks