What does mantle convection mean?

Definitions for mantle convection
man·tle con·vec·tion

This dictionary definitions page includes all the possible meanings, example usage and translations of the word mantle convection.

Wikipedia

  1. Mantle convection

    Mantle convection is the very slow creeping motion of Earth's solid silicate mantle as convection currents carrying heat from the interior to the planet's surface.The Earth's surface lithosphere rides atop the asthenosphere and the two form the components of the upper mantle. The lithosphere is divided into a number of tectonic plates that are continuously being created or consumed at plate boundaries. Accretion occurs as mantle is added to the growing edges of a plate, associated with seafloor spreading. Upwelling beneath the spreading centers is the rising component of mantle convection. The hot material added at spreading centers cools down by conduction and convection of heat as it moves away from the spreading centers. At the consumption edges of the plate, the material has thermally contracted to become dense, and it sinks under its own weight in the process of subduction usually at an ocean trench. Subduction is the descending component of mantle convection.This subducted material sinks through the Earth's interior. Some subducted material appears to reach the lower mantle, while in other regions, this material is impeded from sinking further, possibly due to a phase transition from spinel to silicate perovskite and magnesiowustite, an endothermic reaction.The subducted oceanic crust triggers volcanism, although the basic mechanisms are varied. Volcanism may occur due to processes that add buoyancy to partially melted mantle, which would cause upward flow of the partial melt due to decrease in its density. Secondary convection may cause surface volcanism as a consequence of intraplate extension and mantle plumes. In 1993 it was suggested that inhomogeneities in D" layer have some impact on mantle convection.Mantle convection causes tectonic plates to move around the Earth's surface.

Wikidata

  1. Mantle convection

    Mantle convection is the slow creeping motion of Earth's solid silicate mantle caused by convection currents carrying heat from the interior of the Earth to the surface. The Earth's surface lithosphere, which rides atop the asthenosphere, is divided into a number of plates that are continuously being created and consumed at their opposite plate boundaries. Accretion occurs as mantle is added to the growing edges of a plate, associated with seafloor spreading. This hot added material cools down by conduction and convection of heat. At the consumption edges of the plate, the material has thermally contracted to become dense, and it sinks under its own weight in the process of subduction usually at an ocean trench. This subducted material sinks to a depth of 660 kilometres in the Earth's interior where it is impeded from sinking further, possibly due to a phase change from spinel to silicate perovskite and magnesiowustite, an endothermic reaction. The subducted oceanic crust triggers volcanism, although the basic mechanisms are varied.

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Numerology

  1. Chaldean Numerology

    The numerical value of mantle convection in Chaldean Numerology is: 5

  2. Pythagorean Numerology

    The numerical value of mantle convection in Pythagorean Numerology is: 5


Translations for mantle convection

From our Multilingual Translation Dictionary

  • convección del mantoSpanish
  • మాంటిల్ ఉష్ణప్రసరణTelugu
  • 地幔对流Chinese

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"mantle convection." Definitions.net. STANDS4 LLC, 2024. Web. 29 Mar. 2024. <https://www.definitions.net/definition/mantle+convection>.

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