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Q: Why don't all rocks have foliation?
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Do all metamorphic rocks have layers?

No. The layering or foliation only occurs when there is a variation in the composition of the original rock. If the rock is homogeneous, then there will be no foliation.


Do all metamorphic rocks show foliation?

No. Non-foliated metamorphic rocks include quartzite and marble.


Foliation is caused by?

Foliation in rocks refers to the process being split into thin sheets. It is caused by intense pressure that shapes rocks to align in particular directions.


What is nonfoliated texture?

Metamorphic rocks that do not exhibit foliation.


Are sedimentary rocks classified tofoliated sedimentary rocks?

No, sedimentary rocks are not classified as foliated. Foliation is a textural feature found in certain types of metamorphic rocks where minerals are aligned in layers or bands due to pressure and heat. Sedimentary rocks are formed by the accumulation and cementation of sediments and do not exhibit foliation.


What major group does foliated rocks belong?

Foliation is a characteristic of some metamorphic rocks.


What type of rock often have foliation?

Metamorphic rocks often have foliation, which is a layered structure that results from the alignment of mineral grains due to heat and pressure during formation. Common types of foliated rocks include slate, schist, and gneiss.


How do foliated rocks break?

Usually along the plane of foliation.


Where do foiliated rocks form?

Foliation occurs deep underground.


What describes the thin flat layering found in most metamorphic rocks?

The thin flat layering found in most metamorphic rocks is called foliation, and it is formed due to the alignment of mineral grains or the presence of alternating layers of different mineral compositions. Foliation is a common feature in rocks that have undergone high pressure and temperature conditions, leading to the development of a layered structure.


Is foliation caused by direct pressure?

Yes, foliation is caused by directed pressure in rocks. This pressure aligns minerals in the rock, resulting in a layered or banded appearance. Foliation is common in metamorphic rocks and is a result of the rocks being subjected to deformation under pressure.


Foliation is the arrangement of minerals in?

Foliation is the arrangement of minerals in a rock that results in a layered or banded appearance. It is commonly formed in metamorphic rocks through processes like pressure and temperature causing mineral alignment. Foliation is a key characteristic used to classify and identify different types of metamorphic rocks.