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Both foliation and lineations features of deformation in rocks. Lineations however are indicatives of the presence of foliation but lineation is a planar stucture measured in therms of dip and strike, meanwhile lieations are measured in terms of plunge and direction. The dip is the angle a foliation makes with the horizontal, it is a measure of the inclination of the foliation. Strike however measured right angled to the dip, it is a measure of the general trend of the surface fo the foliation (season why leation cannot be measured in terms of strike, because it is simply a lineation and thus has no surface trend). The plunge also is the angle a lineation makes with the horizontal. It is similar to dip in that it also a measure of inclination but different but unlike dip it tells us nothing about the direction of the lineation. This is why direction comes as a supplementary measure of lineation.
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I think there is some stuff mixed up in the above answer. Foliations are planes, Lineations are lines.
Foliations have Strike and Dip
Lineations have Trend and Plunge
Foliations form as a result of compression or shearing and form perpendicular to resulting compression (planes will be closer to the direction of extension - imagine squeezing a ball of soft material and see which way it stretches). Some of the most common foliations are in folds, at the axial hinge of a fold, the foliation tends to be the same as the axial plane, but moving away from the centre of the fold the foliations tend to lay away from the plane - this depends on competency of rock holding the folds. In the field it can be easy to confuse bedding planes with foliations - you may have to question what it is that distinguishes the layers to decide if it's a bed or foliation. Often a foliation plane has no distinguishing features between layers (until it starts developing schistosity and banding)
There are many types of lineations: Striations, stretching lineations, intersection linetions. In the field they are a line on a rock, not a plane.
Stretching lineations (usually what you are looking for) are basically the result of a crystal (or set of crystals) being stretched in a ductile environment (so basically you've got a blob of material that's been stretched out)
Intersection Lineations: The line that is produced where bedding planes (sedimentary material) intersect with foliation planes. At the axial hinge of fold the foliations and beds are usually perpendicular (90 degrees) to each other.
Striations: Usually a brittle feature, is basically scratch marks of one rock moving on another, can be formed by glaciers or sometimes in faults. Displays a sense of movement.
Foliation refers to repetitive layering in metamorphic rocks caused by the alignment of mineral grains, creating a planar structure. Lineation, on the other hand, refers to a linear arrangement or orientation of minerals or structures within a rock, such as elongated minerals, folds, or faults. In summary, foliation is planar, while lineation is linear.
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No, there is no difference in appearance between DNA from different cells. DNA is a molecule that has a uniform structure regardless of the cell type it is found in. The only differences in DNA between cells come from variations in the sequence of nucleotides that make up the DNA.
What has the author Dennis Howson Waddington written?
Dennis Howson Waddington has written: 'Foliation and mineral lineation in the Moon River synform, Grenville structural province, Ontario'
Difference between schistose foliation and gneiss-to foliation?
Schistose foliation is a type of foliation characterized by the preferred orientation of platy minerals like mica, giving the rock a banded appearance. Gneissic foliation, on the other hand, is a type of foliation in gneiss where light and dark minerals have segregated into distinct bands, often resulting in a striped or layered appearance. Gneissic foliation is typically coarser than schistose foliation.
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.
Results from rocks being pushed higher and deeper as the same amount of material tries to occupy less space?
This process leads to the rocks becoming deformed, fractured, and metamorphosed due to the increased pressure and temperature. This can result in the formation of new minerals, changes in rock texture, and the development of foliation or lineation within the rock.
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.
Do conglomerate have foliation?
With a good eye you maybe could see one but usually they do not exhibit a foliation.
What kind of metamorphic rock is formed where rocks have been heated but not deformed?
A metamorphic rock formed where rocks have been heated but not deformed is called a contact metamorphic rock. This type of rock forms when existing rocks are altered by the heat from nearby magma without experiencing significant pressure or deformation. Examples include hornfels 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.
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.
Which mineral is responsible for the strong foliation in a schist?
The mineral responsible for the strong foliation in schist is usually mica (such as biotite or muscovite). These minerals have a planar structure that aligns during the metamorphic process, creating the foliation planes in the rock.
How are metamorphic rock structures related to deformation?
Metamorphic rock structures are formed when rocks are subjected to high pressure and temperature, often due to tectonic forces that cause deformation. Deformation can cause rocks to recrystallize, rearrange mineral structures, and develop foliation or lineation in metamorphic rocks. Therefore, the type and intensity of deformation can significantly influence the texture and structure of metamorphic rocks.
