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foliation

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foliation

Planar arrangement of structural or textural features in any rock type, but particularly that resulting from the alignment of constituent mineral grains of a metamorphic rock along straight or wavy planes. Foliation commonly occurs parallel to original bedding, but it may not be obviously related to any other structural direction. Foliation is exhibited most prominently by sheety minerals, such as mica or chlorite.


foliation
1. Botany
a. the process of producing leaves
b. the state of being in leaf
c. the arrangement of leaves in a leaf bud; vernation
2. Architect
a. ornamentation consisting of foliage
b. ornamentation consisting of cusps and foils
3. any decoration with foliage
4. Geology the arrangement of the constituents of a rock in leaflike layers, as in schists

foliation [‚fō·lē′ā·shən]
(botany)
The process of developing into a leaf.
The state of being in leaf.
(geology)
A laminated structure formed by segregation of different minerals into layers that are parallel to the schistosity.
(metallurgy)
Beating metal into thin sheets.


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? Mentioned in ? References in periodicals archive
 
Coeval craton-scale deformation is associated with the development of the N- to NW-trending regional foliation, and high-temperature metamorphism is associated with the formation of migmatitic diatexites.
Geological mapping indicates that the mineralization occurs conformably within foliation parallel horizons that have been the subject of preferential structural preparation.
Gold mineralization identified to date at Morogoro occurs in the form of multiple narrow (10 cm to 50 cm) foliation parallel quartz veinlets and/or silicified zones containing fine visible gold.
 
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