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Metamorphism occurs when the temperature and or pressure environment in which a rock exists changes. The mineral assemblage present in a rock is stable for any given temperature/pressure environment and when that environment changes a new, stable mineral assemblage forms and as it does so it can align with the the stress axes to impart a metamorphic fabric.
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∙ 6y ago
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∙ 10y agoHeat is one cause of metamorphism in rocks, The elevated temperature (at depth usually) enables different minerals to be formed from the same chemical make-up.
And Pressure is another variable with metamorphic effect. Diamond would be the most spectacular example, but in general increasing the pressure will encourage the formation of crystal forms with smaller volume.
And in the softened state produced at temperature, the physical deformation of a crystal lattice is enabled. Slate would be a common example of this response to shear.
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∙ 9y agoMetamorphism may result from heat, pressure, and chemical reactions. Metamorphism is the change in composition of a rock by external or internal forces.
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∙ 9y agoMetamorphism refers to the change in the composition or structure of a rock. It may result from heat, pressure and other natural phenomena.
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∙ 12y agosedimentery rock being heated and squashed by other rock nd bit's of sediment.
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∙ 11y agoPressure from weight of overlying rock
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∙ 10y agoHot Magma
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What causes contact metamorphism?
contact metamorphism occurs when hot magma bakes rocks
Why are metamorphic rocks formed by contact metamorphism usually not as dense as those formed by regional metamorphism?
Contact metamorphism does not cause profound compaction, which is the reduction in size of the spaces between mineral particles due to increases in pressure. Regional metamorphism causes compaction and possibly recrystallization, increasing the density of the rock.
If metamorphism causes a rock to melt would the rock that results still be consider a metamorphic rock?
=== === Metamorphism does not cause a rock to melt. If a rock melts, then solidifies, it is by definition an igneous rock. There are rocks called granulites which represent the highest grade of metamorphism, and some may have experienced a partialmelting.
What causes regional metamorphism?
Regional metamorphism occurs due to the change in pressure and temperature over a large region of the crust. It is the result of high pressure and elevated temperatures that are associated with deep burial in an organic belt.
What are the Three types of metamorphism?
contact metamorphism, regional metamorphism, dynamic metamorphism
What causes contact metamorphism?
contact metamorphism occurs when hot magma bakes rocks
What is the process other than heat that causes metamorphism?
pressure.
What are two processes to cause metamorphism?
what are the physical conditions that causes metamorphism?
What is the process called other than heat that causes metamorphism?
pressure.
What occurs when heat from nearby magma causes changes in the surrounding rocks?
intrusive metamorphism
What are two sources of heat and pressure that causes metamorphism?
maybe heat can make have the pressure
Why are metamorphic rocks formed by contact metamorphism usually not as dense as those formed by regional metamorphism?
Contact metamorphism does not cause profound compaction, which is the reduction in size of the spaces between mineral particles due to increases in pressure. Regional metamorphism causes compaction and possibly recrystallization, increasing the density of the rock.
What are the 4 types of metamorphism?
contact metamorphism, regional metamorphism, dynamic metamorphism
What limits the maximum temperatures possible in metamorphism?
The maximum temperature that creates metamorphism is the temperature just below that which causes a rock to melt. Once a rock melts, then solidifies, it is considered an igneous rock.
If metamorphism occurs due to heat generated by magma it is called metamorphism?
It is called contact metamorphism.
If metamorphism causes a rock to melt would the rock that results still be consider a metamorphic rock?
=== === Metamorphism does not cause a rock to melt. If a rock melts, then solidifies, it is by definition an igneous rock. There are rocks called granulites which represent the highest grade of metamorphism, and some may have experienced a partialmelting.
What causes regional metamorphism?
Regional metamorphism occurs due to the change in pressure and temperature over a large region of the crust. It is the result of high pressure and elevated temperatures that are associated with deep burial in an organic belt.
