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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.
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How may foliation occur in metamorphic rock?
The foliation is caused by the massive force of pressure and high temperature which results from mountain building processes caused by plate collisions. 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.
How is foliation formed?
Folaiation is caused then flat mineral grains or crystals line up to form a plane in the body of the rock. This can happen during sedimentation or during deformation/metamorphosis.
Why do minerals in metamorphic rocks often rearrange in layers?
The alignment of minerals into bands (foliation) is caused by the massive force of pressure and high temperature which results from mountain building processes caused by plate collisions. 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.
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.
How will foliation in continental metamorphic rocks formed during subduction be oriented?
perpendicular to the direction of plate movement :)
Is foliation caused by direct pressure?
Yes, it's a product of differential stress (directed pressure).
How may foliation occur in metamorphic rock?
The foliation is caused by the massive force of pressure and high temperature which results from mountain building processes caused by plate collisions. 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.
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.
Which type of metamorphosis makes non-foliated rocks?
Contact metamorphism does not often produce the foliation caused by regional metamorphism
Foliation is the arrangement of minerals in?
Foliation is the arrangement of minerals in parallel layers.
How is foliation produced in a metamophic rocks?
Foliation is caused by heat and pressure being applied to the parent rock. 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.
What features would easily distinguish schist and gneiss from quartzite and marble?
Schist and gneiss are metamorphic rocks that display foliation, the parallel layering of the minerals caused by immense pressures. Quartzite and marble do not display foliation as they are metamorphosed more by heat than by pressure.
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 is saltiness?
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 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.
What type of rock often have foliation?
Metamorphic rocks often have foliation. Schist is a common example.
Do conglomerate have foliation?
With a good eye you maybe could see one but usually they do not exhibit a foliation.
