upwelling plume
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Plume — may refer to:In fashion: * A prominent bird feather often used as an ornament ** Hackle, an ornamental plume on a uniform headdress In literature: * Plume (publishing), an American book publishing company * Plumes , a 1924 novel by Laurence… … Wikipedia
plume — plumeless, adj. plumelike, adj. /ploohm/, n., v., plumed, pluming. n. 1. a feather. 2. a large, long, or conspicuous feather: the brilliant plume of a peacock. 3. a soft, fluffy feather: the plume of an egret. 4. any plumose part or formation. 5 … Universalium
upwelling — the upward limb of a convection current. In geography, usually applied to a convection plume in the mantle or the upward movement of water in an ocean current … Geography glossary
Iceland plume — The Iceland Plume is an upwelling of anomalously hot rock in the Earth s mantle beneath Iceland whose origin probably lies at the boundary between the core and the mantle at ca. 2880 km depth. It is generally thought to be the cause of the… … Wikipedia
Volcanic plume — A volcanic plume can refer to:* An eruption column of hot volcanic ash and gas emitted into the atmosphere during an explosive volcanic eruption. * A mantle plume, an upwelling of abnormally hot rock within the mantle which can cause volcanic… … Wikipedia
mantle plume — noun An upwelling of abnormally hot rock within the Earths mantle … Wiktionary
convection plume — the upwelling part of a convection cycle in the mantle … Geography glossary
Ultramafic to mafic layered intrusions — are found in typically ancient cratons and are rare but worldwide in distribution. The intrusive complexes exhibit evidence of fractional crystallization and crystal segregation by settling or floating of minerals from a melt. Ideally the… … Wikipedia
Hotspot — A hot spot is a region of high or special activity within a larger area of low or normal activity; it may refer to:* Hotspot (geology), a location above a hot upwelling plume of mantle. * Hot Spot, a keno game offered by the California Lottery *… … Wikipedia
Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… … Universalium
plate tectonics — plate tectonic, adj. Geol. a theory of global tectonics in which the lithosphere is divided into a number of crustal plates, each of which moves on the plastic asthenosphere more or less independently to collide with, slide under, or move past… … Universalium
