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Metamorphic rocks often have foliation. Schist is a common example.

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What is gneissic foliation?

Gneissic foliation is a type of foliation found in gneiss, a high-grade metamorphic rock. It refers to the layering or banding of different minerals within the rock, resulting from the reorganization of minerals under high temperature and pressure conditions during metamorphism. This foliation is often characterized by alternating light and dark mineral bands.


What is an example of foliation?

An example of foliation is the parallel alignment of minerals in a metamorphic rock, such as schist or gneiss. This alignment results from the pressure and temperature conditions during the rock's formation, creating a layered or banded appearance.


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.


What is schistose foliation?

Schistose foliation is a type of foliation found in metamorphic rocks, where minerals are aligned in layers or sheets due to directed pressure during metamorphism. This alignment gives the rock a banded appearance, with a distinct preferred orientation of mineral grains.


When certain minerals recrystallize with a preferred orientation that is perpendicular to the direction of the compressonal force the rock is said to exhibit?

The rock is said to exhibit foliation. Foliation is a type of deformation that occurs in rocks under intense pressure, causing individual minerals to align in a preferred orientation parallel to the direction of compressional forces.

Related Questions

What is gneissic foliation?

Gneissic foliation is a type of foliation found in gneiss, a high-grade metamorphic rock. It refers to the layering or banding of different minerals within the rock, resulting from the reorganization of minerals under high temperature and pressure conditions during metamorphism. This foliation is often characterized by alternating light and dark mineral bands.


Difference between schistose foliation and gneiss-to foliation?

A schistose foliation would be found in a metamorphic rock with a large amount of micaceous minerals, creating a flaky texturing with easily cleavable layers. Gneiss is more coarse in texture, not as easily cleavable along planes, and contains less micaceous minerals.


What is an example of foliation?

An example of foliation is the parallel alignment of minerals in a metamorphic rock, such as schist or gneiss. This alignment results from the pressure and temperature conditions during the rock's formation, creating a layered or banded appearance.


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.


What is schistose foliation?

Schistose foliation is a type of foliation found in metamorphic rocks, where minerals are aligned in layers or sheets due to directed pressure during metamorphism. This alignment gives the rock a banded appearance, with a distinct preferred orientation of mineral grains.


When certain minerals recrystallize with a preferred orientation that is perpendicular to the direction of the compressonal force the rock is said to exhibit?

The rock is said to exhibit foliation. Foliation is a type of deformation that occurs in rocks under intense pressure, causing individual minerals to align in a preferred orientation parallel to the direction of compressional forces.


Is tuff foliated?

Tuff is not always foliated. Foliation refers to the alignment of minerals in a rock due to pressure during metamorphism, whereas tuff is a type of rock made of volcanic ash that has been cemented together. Tuff typically does not exhibit foliation unless it has been subjected to intense pressure and heat during metamorphism.


What causes foliation on a metamorphic rock under what cirumstances would you expect this to happen?

Foliation is created when pressure pushes different parts of the rock in different directions.


What is salty foliation?

Slaty foliation, is a type of parallel foliation consisting of fine-grained platy minerals. The direction of foliation is usually perpendicular to the direction of maximum stress.


What is it called when a metamorphic rock has folds or bands?

When a metamorphic rock has folds or bands, it is called foliation. Foliation occurs when pressure and heat cause minerals within the rock to align in layers, creating a banded appearance. These layers can be folded or crumpled due to tectonic forces.


How can you tell if a rock is a metamorphic rock?

A metamorphic rock will display foliation or bands around the rock.


Is sedimentary rock the only type of layered rock?

No. Extrusive igneous rocks are usually layered. Some metamorphic rocks have foliation, which resembles layering, but it is not the same thing.