columnar structure


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columnar structure

[kə′ləm·nər ‚strək·chər]
(geology)
(mineralogy)
Mineral structure consisting of parallel columns of slender prismatic crystals.
(petrology)
A primary sedimentary structure consisting of columns arranged perpendicular to the bedding.
References in periodicals archive ?
The typical size of the columnar structure of both coatings is about 300 nm.
Granular structure is typically small, while prismatic and columnar structure is much larger.
If this is seen as a model, both the monumental columnar structure and the rotunda immediately yield much deeper resonances.
As we reported, this polymer self-assembles into a columnar structure, due to an exo-recognition of the side-chain dendrons.
On the other hand, the columnar structure was not observed at higher target current (3.
For areas with maximum content of molybdenum an unclearly pronounced columnar structure with prevailing content of molybdenum (light field) and increased content of copper (dark field) is characteristic (Figure 5).
The observed solidification pattern [38] shows a columnar structure (cellular in CPTi, but dendritic in Ti6/4) in the portion of the ingot which solidified whilst the steady-state melting was taking place, i.
Microlayers of iron have columnar structure, and thickness of grains is approximately equal to their thickness.
This change is due to the migration of particles and formation of a chainlike or columnar structure oriented along the electric field direction over the gap between the electrodes (1-3).