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Why do rocks have to be in the mantle to change to a metamorphic rock?
Wiki User
∙ 14y ago
The short answer is that they don't! For metamorphism to occur rocks require either heat, pressure or a combination of the two.
Both of these conditions occur together in the mantle, however they can occur in other places to. Such as in the rocks around igneous intrusions (high temperatures and low to moderate pressures) which cause contact metamorphism.
It can also occur in zones of high tectonic stress (such as continental collision zones where mountains are being built where there is a relatively low temperature by mantle standards but very high pressure) which causes regional metamorphism.
Finally in zones characterised by very high strains (e.g. the rocks in very close proximity to fault zones) metamorphism can occur. The type depends on the strain rate and the depth (which affects the pressure and temperature). This type of metamorphism is known as dynamic metamorphism).
All the above conditions (and a number of others) can cause metamorphism to occur in sections of the earth outside the mantle.
The differing types of metamorphism at differing temperatures and pressures create differing assemblages of minerals. These are known as metamorphic facies.
Please see the related links for more information.
Wiki User
∙ 14y ago
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What rocks change into metamorphic rocks?
Any type of rock can become metamorphic.
Where do metamorphism rocks form?
where do metamorphic rocks form, the mantle crust or core?Metamorphic rocks are rocks that have "morphed" into another kind of rock. These rocks were once igneous or sedimentary rocks. How do sedimentary and igneous rocks change? The rocks are under tons and tons of pressure, which fosters heat build up, and this causes them to change. If you exam metamorphic rock samples closely, you'll discover how flattened some of the grains in the rock are. this is how they are formed.
Can any type of rock change?
Yes, because sedimentary rocks can change into metamorphic and metamorphic can change into igneous rocks.
Can metamorphic rocks from from other metamorphic rocks?
Yes. Most likely it would become a metamorphic rock of higher grade. Slate is a low grade metamorphic rock. With increased heat and pressure it will become schist, a high grade metamorphic rock.
How does metaporhic rocks form?
Metamorphic rocks are rocks that have "morphed" into another kind of rock. These rocks were once igneous or sedimentary rocks. How do sedimentary and igneous rocks change? The rocks are under tons and tons of pressure, which fosters heat build up, and this causes them to change. If you exam metamorphic rock samples closely, you'll discover how flattened some of the grains in the rock are.
What is rock that is changed by heat pressure or chemical change?
Metamorphic rocks have been changed by heat or pressure. This can be a change in size, shape, or arrangement of minerals.
What rocks change into metamorphic rocks?
Any type of rock can become metamorphic.
Where do metamorphism rocks form?
where do metamorphic rocks form, the mantle crust or core?Metamorphic rocks are rocks that have "morphed" into another kind of rock. These rocks were once igneous or sedimentary rocks. How do sedimentary and igneous rocks change? The rocks are under tons and tons of pressure, which fosters heat build up, and this causes them to change. If you exam metamorphic rock samples closely, you'll discover how flattened some of the grains in the rock are. this is how they are formed.
How do igneous rocks change into metamorphic rocks?
The metamorphic rock melts into magma then cools into igneous rock
What is one thing that change a rock to a metamorphic rock?
Heat and pressure change rocks to metamorphic!
How do you change granite from sedimentary rocks to metamorphic rocks?
Gneiss is a foilated metamorphic rock.
Can any type of rock change?
Yes, because sedimentary rocks can change into metamorphic and metamorphic can change into igneous rocks.
Can igneous rock be formed into a metamorphic rock?
An igneous rock can be metamorphosed (changed) into a metamorphic rock but will no longer be an igneous rock. An igneous body can be intruded into metamorphic rocks but will still be an igneous rock that is different from the surrounding metamorphic rocks. Ethier answer work depending on how the question is read.
How do metamorphic rocks change into igneous rock?
The metamorphic rock melts into magma then cools into igneous rock
What processes transform metamorphic rock into sedimentary rocks?
Heat and pressure change the rock into a metamorphic rock
Do rocks change into different rock in the rock cycle?
yes, rocks change. metamorphic, sedimantary and igneous rocks can change into eachother.
How are metamorphic sedimentary and igneous rocks continues?
Igneous rocks are formed from the cooling of magma that rises up from the mantle. Sedimentary rocks are formed from the compaction of small grains of weathered igneaous or metamorphic rock. Metamorphic rocks are formed from the action of heat and/or pressure on igneous or sedimentary rocks. Finally, subduction process at certain plate boundaries return all three rock types to the mantle. So there exists a contiuous cycle between the three types of rock; starting with igneous rocks, perhaps becoming sedimentary rock or metamorphic rock or both, then returning to the mantle.
