- columnar jointing
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(in basaltic igneous rocks) a series of generally hexagonal columns formed by vertical joints as a result of contraction during cooling.
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Universalium. 2010.
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Universalium. 2010.
columnar jointing — GLOSSARY OF VOLCANIC TERMS A type of fracture pattern resulting from the thermal contraction of hot volcanic rocks after their crystallization which commonly is expressed in elongate, pentagonal or hexagonal columns oriented perpendicular to the… … Glossary of volcanic terms
columnar jointing — /kəˌlʌmnə ˈdʒɔɪntɪŋ/ (say kuh.lumnuh joynting) noun that variety of jointing which breaks the rock into columns, especially of basaltic rock in which the joints form a hexagonal pattern by shrinkage during cooling …
columnar jointing — (in basaltic igneous rocks) a series of generally hexagonal columns formed by vertical joints as a result of contraction during cooling … Useful english dictionary
Disyunción columnar — en basaltos de la isla Porto Santo. La disyunción columnar es un tipo de diaclasa que se forma por tensiones cuando lava o magma se enfría.[1 … Wikipedia Español
Devils Postpile National Monument — IUCN Category III (Natural Monument) … Wikipedia
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Joint (geology) — Joint sets on a bedding plane in flagstones, Caithness, Scotland … Wikipedia
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joint — /joynt/, n. 1. the place at which two things, or separate parts of one thing, are joined or united, either rigidly or in such a way as to permit motion; juncture. 2. a connection between pieces of wood, metal, or the like, often reinforced with… … Universalium