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Becausethey are under a great pressure under the Earth's surface.

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12y ago

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Can rubies appear in metamorphic rocks?

yes


What aren't you likely to find a fossil I metamorphic rock or igneous rock?

The fossils will be crushed under the pressures required to create metamorphic rocks and they will melt in the heat required to make igneous rocks.


What step in the rock helps sedimentary rock to form?

It's when parts of both igneous and metamorphic rocks are crushed together and then they form sedimentary rocks.


WHAT STEP IN THE CYCLE HELPS SEDIMENTARY ROCK TO FORM?

It's when parts of both igneous and metamorphic rocks are crushed together and then they form sedimentary rocks.


Which two of the three rock types appear to be made primarily of intergrown crystals?

Igneous and metamorphic rocks often appear to be made primarily of intergrown crystals due to the process of cooling and solidification for igneous rocks and recrystallization for metamorphic rocks. Sedimentary rocks are typically composed of compacted and cemented sediment particles rather than intergrown crystals.


How rocks are created?

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.


Are metamorphic rocks only formed by igneous rocks?

No. Metamorphic rocks can also from front sedimentary rocks and from other metamorphic rocks.


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.


Changed-over rocks are called?

Metamorphic Rocks


How do metamorphic rocks formed?

Metamorphic rocks are formed from igneous, sedimentary, or other metamorphic rocks. The change is brought about by either contact with an intrusive plutonic body, or by enormous pressure and heat usually derived from lithospheric plate collisions.


Is metamorphic rocks made up of sedimentary rock igneous rock or other metamorphic rocks?

Metamorphic rocks


Are unakite rocks Metamorphic rocks or igneous rocks?

It is a type of Metamorphic rock