Ejection

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Ejection (Latin ejectio, expulsion, expulsion ) is one of the two main types of volcanic eruptions in volcanism, alongside effusion .

During a volcanic eruption, ejection results in the explosive ejection of rock material ( tephra , both adjacent rock and igneous material ), combined with strong gas production. The power of the causing explosive volcanic activity depends on the amount of gases released as well as the viscosity of the magma and its mineral composition. Ejectives activity occurs only in certain volcanic types, such as slag and ash volcanoes , layer volcanoes and maars .

See also

literature

  • Dieter Richter: General Geology . 3. Edition. de Gruyter Verlag, Berlin - New York 1985, ISBN 3-11-010416-4 , pp. 255 f .