Columnar jointing is a geological structure where sets of intersecting closely
spaced fractures, referred to as joints, result in the formation of a regular array of
Columnar jointing definition, (in basaltic igneous rocks) a series of generally
hexagonal columns formed by vertical joints as a result of contraction during
Columnar jointing forms in lava flows, sills, dikes, ignimbrites (ashflow tuffs), and
shallow intrusions of all compositions. Most columns are straight with parallel ...
Joints are fractures in rocks, and columnar joints are a specific type of joint
pattern. ... Bates, Robert L. and Julia A. Jackson, Dictionary of Geological Terms.
Define columnar. columnar synonyms, columnar pronunciation, columnar
translation, English ... Related to columnar: columnar epithelium, columnar
Looking for online definition of columnar in the Medical Dictionary? columnar
explanation free. ... Related to columnar: columnar epithelium, columnar jointing
Nov 18, 2012 ... def. Columnar Jointing: A structure that forms in rocks (most commonly in basalt)
that consists of columns (mostly commonly hexagonal in ...
Make research projects and school reports about joint (geology) easy with
credible articles from our FREE, online encyclopedia and dictionary. ... as those
which split a rock into long prisms or columns to form 'columnar joints', most
Lava flows display a variety of columns, often with a stratigraphic pattern.
Colonnade is a coarser, more regular pattern often found at the base of the flow.
This glossary of geologic terms is based on the glossary in Earth: An Introduction
to ..... columnar jointing The type of jointing that breaks rock, typically basalt ...