Columnar structure


  • Webster's Revised Unabridged Dictionary
    • Columnar structure (Geol) a structure consisting of more or less regular columns, usually six-sided, but sometimes with eight or more sides. The columns are often fractured transversely, with a cup joint, showing a concave surface above. This structure is characteristic of certain igneous rocks, as basalt, and is due to contraction in cooling.
    • Columnar structure See under Columnar.
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In literature:

This mass exhibits a columnar structure similar to that of the Giant's Causeway.
"The Bay State Monthly, Volume 3, No. 2" by Various
The islands are rocky and barren, presenting high cliffs of a columnar structure.
"Narrative of a Journey to the Shores of the Polar Sea, in the years 1819-20-21-22, Volume 2" by John Franklin
The columnar structure is not prevalent, the rock being either amorphous, or weathering into concentric shells.
"Volcanoes: Past and Present" by Edward Hull
In the lower part the lava has a columnar structure.
"A Manual of Elementary Geology" by Charles Lyell
The columnar structure is not peculiarly characteristic of basalt.
"Geology" by James Geikie
This connecting line of columnar epiblast, however, is a very transitory structure.
"The Works of Francis Maitland Balfour, Volume 1" by Francis Maitland Balfour

In science:

Figure 2: Three dimensional Poisson network. (a) an arbitrary planar network. (b)The columnar structure of three dimensional Poisson network.
Inhomogenous Poisson Networks and Random Cellular Structures
In both cases, the structure with the lowest total energy is the columnar structure with ferroelectric polarization along the direction of the columns.
Design of Low Band Gap Double Perovskites from First Principles
Electronic structure of vortices pinned by columnar defects.
The vortex pinning on the cylindrical defects and the electronic structure of the vortex core