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Metamorphic rocks are created from rocks that are deformed by tectonic forces and/or are brought to temperature that are much different from those that they were first formed in (usually hotter).
The effect of increased temperature is the growth of minerals from others that are no longer stable under the changed pressure and temperature conditions (e.g. diamond is formed from graphite under very high pressure and garnet growths at high temperatures and pressures from aluminium rich usually sedimentary rocks).
The effect of shear stress on the rock (i.e. directed force creating not only compression but also deformation) is the change of shape of minerals as well as rotation and alignment of platy minerals into bands. These processes lead to the usually banded appearance of metamorphic rocks.
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Metamorphic rocks in which minerals are NOT aligned within the rock are called?
Metamorphic rocks in which the minerals show no alignment are called non-foliated metamorphic rocks.
Metamorphic rocks that show layers of dark minerals alternating with layers of light minerals are classified as?
foliated metamorphic rocks. The alternating layers are caused by the alignment and segregation of minerals during the metamorphic process, resulting in a banded or layered appearance. Examples of foliated metamorphic rocks include gneiss, schist, and slate.
Why is metamorphic rock hard?
because a metamorphic rock is made up of different rocks.
When metamorphic rock has banded texture with minerals grains that are arranged in layers it is called?
Metamorphic rocks with a layered or banded look are referred to as foliated.
Is metamorphic rock rough?
Metamorphic rocks can have a range of textures, from smooth to rough, depending on the minerals present and the intensity of the metamorphic processes they underwent. Some metamorphic rocks, like gneiss, can have a rough texture due to the presence of minerals like quartz and feldspar.
Is metamorphic a type of mineral?
Metamorphic is a group of rocks with similar characteristics. There are minerals in the rocks so they could be considered made of minerals but they are not minerals themselves.
Why Some Minerals Only Occur In Metamorphic Rocks.?
because if the metamorphic rocks are big they will shrink
Can metamorphic rocks be formed by solutions of minerals?
No.
What happens to the minerals when a rock becomes a metamorphic rocks?
Minerals may get changed to other minerals forming a new rock. Mineral grains also become aligned in response to the increased pressure.
Metamorphic rocks in which minerals are NOT aligned within the rock are called?
Metamorphic rocks in which the minerals show no alignment are called non-foliated metamorphic rocks.
Metamorphic rocks that show layers of dark minerals alternating with layers of light minerals are classified as?
foliated metamorphic rocks. The alternating layers are caused by the alignment and segregation of minerals during the metamorphic process, resulting in a banded or layered appearance. Examples of foliated metamorphic rocks include gneiss, schist, and slate.
How are metamorphic used in everyday life?
rocks and minerals
Do foliated metamorphic rocks have minerals that are randomly placed?
no.
What is metamorphic rocks that have parellel bands of minerals?
It is foliated
Are metamorphic rocks naturally formed?
Metamorphic rocks are naturally formed. they are formed from natural changes that happen to other rocks.
Why is metamorphic rock hard?
because a metamorphic rock is made up of different rocks.
These rocks form from previously existing rocks that have been altered by heat and pressure?
These rocks are metamorphic rocks. They form when existing rocks (igneous, sedimentary, or other metamorphic rocks) undergo high temperatures and pressure deep within the Earth's crust, causing their minerals to recrystallize and new minerals to form. Metamorphic rocks can have distinct textures and structures depending on the intensity of the heat and pressure they experienced.
