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How does pressure and heat cause foliation in metamorphic rocks?
Wiki User
∙ 15y ago
The heat and pressure combine to realign the existing minerals from a random orientation to one of parallel orientation, thus creating the visible lines or platy cleavages found in foliated metamorphic rocks. The lines of foliation are created perpendicularly to the force being applied.
Wiki User
∙ 15y ago
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Do all metamorphic rocks show foliation?
No. Non-foliated metamorphic rocks include quartzite and marble.
What type of rock often have foliation?
Metamorphic rocks often have foliation. Schist is a common example.
What are the characteristics of foliated and non-foliated metamorphic rocks?
Foliated rocks are metamorphic rocks that look like they have layers or the appearance of layers. Non-foliated rocks are metamorphic rocks without any foliation.
What is a metamorphic rock with parallel lines?
Schists are metamorphic rocks with parallel alignment of minerals.
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 describes the thin flat layering found in most metamorphic rocks?
The thin flat layering found in most metamorphic rocks is called foliation
What is nonfoliated texture?
Metamorphic rocks that do not exhibit foliation.
Do all metamorphic rocks show foliation?
No. Non-foliated metamorphic rocks include quartzite and marble.
What type of rock often have foliation?
Metamorphic rocks often have foliation. Schist is a common example.
What two things are necessary for foliation to form in a metamorphic rock?
presence of platy mineral and orientation stress can give foliation to a metamorphic rocks.
What is a metamophic rock?
a metamorphic rock is a rock that is formed from heat and pressure it can form from a sedimentary or igneous an example of a metamorphic rock is marble metamorphic rocks can have foliation like banding or layers.
Explain the differences between layering in sedimentary rocks and foliation in metamorphic rocks.?
Layering in sedimentary rock is due to seasonal or event based deposition of small rock particles which reflect the environment at the time of deposition. Layering in metamorphic rocks (foliation) is due to the realignment and alteration of minerals from heat and pressure.
Foliated rocks are distinguished by?
The main way metamorphic rocks are classified is by the presence or absence of foliation. Foliated metamorphic rocks are distinguished by the type of foliation they exhibit. Types of foliation textures, include: slaty, phyllitic, schistose, and gneissi.
Does metamorphic rock have layers?
Not exactly. Some metamorphic rocks have foliation, which can appear similar to the layers of sedimentary rock. Foliation develops from mineral grains being oriented by pressure, rather than the deposition of layers.
Layered sedimentary rocks and foliated metamorphic rocks share similarities because?
Both rocks display foliation or banding although the processes involved in creating the foliations are different. Sedimentary rock layering occurs because of sediment deposition, and metamorphic foliation is a mineral alignment response to heat and directional pressure.
What major group does foliated rocks belong?
Foliation is a characteristic of some metamorphic rocks.
Are Foliate rocks metamorphic?
Foliation is a descriptive term applied to certain types of metamorphic rocks, so, by definition, Yes, a folate rock is metamorphic.
