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Metamorphic foliation is layering in metamorphic rock. The layers can be very thin, or they can be a meter thick,
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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 describes the thin flat layering found in most metamorphic rocks?
The thin flat layering found in most metamorphic rocks is called foliation
What kind of metamorphic rock is formed where rocks have been heated but not deformed?
a rock with metamorphic minerals but no foliation or lineation
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.
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 type of rock often have foliation?
Metamorphic rocks often have foliation. Schist is a common example.
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.
What is it called when a metamorphic rock has folds or bands?
Foliation
What is an example of foliation?
Foliation is the layering of metamorphic rock. An example of foliation would be a rock called a Gneiss. On this rock, it is easily apparent to see the layers of rock that have formed.
How can you tell if a rock is a metamorphic rock?
A metamorphic rock will display foliation or bands around the rock.
Do all metamorphic rocks show foliation?
No. Non-foliated metamorphic rocks include quartzite and marble.
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.
How is the orientation of foliation related to stress?
The foliation in metamorphic minerals is always perpendicular to the direction of pressure. E.g. Vertical pressure is applied, the foliation will be horizontal, and vice-versa, the pressure is horizontal you get vertical foliation. From yahoo answers
What kind of metamorphic rock is formed where rocks have been heated but not deformed?
a rock with metamorphic minerals but no foliation or lineation
What is a metamorphic rock with parallel lines?
Schists are metamorphic rocks with parallel alignment of minerals.
