mud volcano

a vent in the earth's surface through which escaping gas and vapor issue, causing mud to boil and occasionally to overflow, forming a conical mound around the vent.

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      mound of mud heaved up through overlying sediments. The craters are usually shallow and may intermittently erupt mud. These eruptions continuously rebuild the cones, which are eroded relatively easily.

      Some mud volcanoes are created by hot-spring activity where large amounts of gas and small amounts of water react chemically with the surrounding rocks and form a boiling mud. Variations are the porridge pot (a basin of boiling mud that erodes chunks of the surrounding rock) and the paint pot (a basin of boiling mud that is tinted yellow, green, or blue by minerals from the surrounding rocks).

      Other mud volcanoes, entirely of a nonigneous origin, occur only in oil-field regions that are relatively young and have soft, unconsolidated formations. Under compactional stress, methane and related hydrocarbon gases mixed with mud force their way upward and burst through to the surface, spewing mud into a conelike shape. Because of the compactional stress and the depth from which the mixture comes, the mud is often hot and may have an accompanying steam cloud.

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Universalium. 2010.

Look at other dictionaries:

  • Mud volcano — A series of mud volcanoes in Gobustan, Azerbaijan …   Wikipedia

  • mud volcano — ALASKA VOLCANO OBSERVATORY GLOSSARY A mud volcano is a small volcano shaped cone of mud and clay, usually less than 1 2 m tall. These small mud volcanoes are built by a mixture of hot water and fine sediment (mud and clay) that either (1) pours… …   Glossary of volcanic terms

  • mud volcano — noun : an orifice in the earth from which gas or vapor issues either through a pool of mud or with the ejection of mud which may accumulate in a conical mound compare air volcano …   Useful english dictionary

  • mud volcano — n. small volcano shaped temporary mound of mud that is formed by geologically excreted liquids and gases around a geyser …   English contemporary dictionary

  • mud volcano — /mʌd vɒlˈkeɪnoʊ/ (say mud vol kaynoh) noun 1. a cone of mud built up by ejection of hot water and mud from a volcanic vent. 2. a soft slurry of mud caused by an escape of gases through a layer of clay; often associated with oil deposits …   Australian English dictionary

  • mud volcano — noun A conical structure formed by the eruption of rock fragments and wet mud along with hot gases. Syn: hervidero, macaluba …   Wiktionary

  • Hingol mud volcano — (Urdu: ہنگول ) are located in Makran District, Balochistan, Pakistan. It is a mud volcano located in Hingol National Park.These are not located on the main road so you will have to consult the locals to guide you to the exact location. A landmark …   Wikipedia

  • mud-cone — mudˈ cone noun A cone formed by a mud volcano • • • Main Entry: ↑mud …   Useful english dictionary

  • Volcano — This article is about the geological feature. For other uses, see Volcano (disambiguation) …   Wikipedia

  • mud — n. 1 wet soft earthy matter. 2 hard ground from the drying of an area of this. 3 what is worthless or polluting. Phrases and idioms: as clear as mud colloq. not at all clear. fling (or sling or throw) mud speak disparagingly or slanderously. here …   Useful english dictionary

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