Magma

:This article is about the type of molten rock. For other meanings of magma, see Magma (disambiguation).

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Magma is molten rock often located inside a magma chamber beneath the surface of the Earth. Magma is a complex high-temperature silicate solution that is ancestral to all igneous rocks. It is capable of intrusion into adjacent crustal rocks or extrusion onto the surface. Magma exists between 650 and 1200 °C. Magma is under high pressure and sometimes emerges through volcanic vents in the form of flowing lava (melt as it exists above the Earth's surface) and pyroclastic ejecta. These products of a volcanic eruption usually contain liquids, crystals and dissolved gases which have never before reached the planet's surface. Magma collects in many separate magma chambers within the Earth's crust, and will have slightly different compositions in different places, which can occur at either a subduction zone, a rift zone or mid-oceanic ridge, or above a mantle plume hotspot. Magma's formation only takes place under specific conditions in the Earth's asthenosphere.

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Rock: Rock may refer to:...

Magma chamber: A magma chamber is the chamber beneath a volcano where the magma is held before an eruption. It is the build up of pressure in this chamber and the sudden release of that pressure by fracturing that causes the eruption....

Silicate: In chemistry, a silicate is a compound consisting of silicon and oxygen (SixOy), one or more metals, and possibly hydrogen. It is also used to denote the salts of silica or of one of the silicic acids....

Magma related Images and Photos (experimental)

LEGO Power Miners 8189 Magma Mech

New Mutants #1 Cover: Magik Moonstar Karma Magma Sunspot Warlock and Legion