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  2. Magmatism - Wikipedia

    en.wikipedia.org/wiki/Magmatism

    Not to be confused with Magnetism. Magmatism is the emplacement of magma within and at the surface of the outer layers of a terrestrial planet, which solidifies as igneous rocks. It does so through magmatic activity or igneous activity, the production, intrusion and extrusion of magma or lava. Volcanism is the surface expression of magmatism.

  3. Magma - Wikipedia

    en.wikipedia.org/wiki/Magma

    Magma (sometimes colloquially but incorrectly referred to as lava by laypeople) is found beneath the surface of the Earth, and evidence of magmatism has also been discovered on other terrestrial planets and some natural satellites. [3] Besides molten rock, magma may also contain suspended crystals and gas bubbles.

  4. Sill (geology) - Wikipedia

    en.wikipedia.org/wiki/Sill_(geology)

    Sill (geology) Illustration showing the difference between a dike and a sill. In geology, a sill is a tabular sheet intrusion that has intruded between older layers of sedimentary rock, beds of volcanic lava or tuff, or along the direction of foliation in metamorphic rock. A sill is a concordant intrusive sheet, meaning that it does not cut ...

  5. Surtseyan eruption - Wikipedia

    en.wikipedia.org/wiki/Surtseyan_eruption

    Surtseyan eruption. A Surtseyan eruption is an explosive style of volcanic eruption that takes place in shallow seas or lakes when rapidly rising and fragmenting hot magma interacts explosively with water and with water-steam- tephra slurries. The eruption style is named after an eruption off the southern coast of Iceland in 1963 that caused ...

  6. 1001° Centigrades - Wikipedia

    en.wikipedia.org/wiki/1001°_Centigrades

    1001° Centigrades, alternative title 2, is the second album by French rock band Magma, released on 5 October 1971. Future reissues use both titles as 2: 1001° Centigrades . The first track, "Rïah Sahïltaahk", was later re-recorded as a full-length studio album, Rïah Sahïltaahk, in 2014, as Christian Vander did not consider himself ...

  7. Magma chamber - Wikipedia

    en.wikipedia.org/wiki/Magma_chamber

    Magma chamber. A magma chamber is a large pool of liquid rock beneath the surface of the Earth. The molten rock, or magma, in such a chamber is less dense than the surrounding country rock, which produces buoyant forces on the magma that tend to drive it upwards. [1] If the magma finds a path to the surface, then the result will be a volcanic ...

  8. Subduction zone metamorphism - Wikipedia

    en.wikipedia.org/wiki/Subduction_zone_metamorphism

    Subduction zone metamorphism. A subduction zone is a region of the Earth's crust where one tectonic plate moves under another tectonic plate; oceanic crust gets recycled back into the mantle and continental crust gets produced by the formation of arc magmas. Arc magmas account for more than 20% of terrestrially produced magmas [2] and are ...

  9. Large igneous province - Wikipedia

    en.wikipedia.org/wiki/Large_igneous_province

    A large igneous province (LIP) is an extremely large accumulation of igneous rocks, including intrusive (sills, dikes) and extrusive (lava flows, tephra deposits), arising when magma travels through the crust towards the surface.

  10. Submarine volcano - Wikipedia

    en.wikipedia.org/wiki/Submarine_volcano

    Submarine volcanoes are underwater vents or fissures in the Earth 's surface from which magma can erupt. Many submarine volcanoes are located near areas of tectonic plate formation, known as mid-ocean ridges. The volcanoes at mid-ocean ridges alone are estimated to account for 75% of the magma output on Earth. [1]

  11. Phreatomagmatic eruption - Wikipedia

    en.wikipedia.org/wiki/Phreatomagmatic_eruption

    Phreatomagmatic eruptions are volcanic eruptions resulting from interaction between magma and water. They differ from exclusively magmatic eruptions and phreatic eruptions. Unlike phreatic eruptions, the products of phreatomagmatic eruptions contain juvenile (magmatic) clasts. [1] It is common for a large explosive eruption to have magmatic and ...

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