volcano - Definition, stages & formation.
Formation of Volcanoes: Molten rock, magma, and other materials move from the Earth's interior to the surface to form volcanoes, which are geological landforms. There are various steps involved in the development of a volcano: 1. Magma Generation: Rocks melt under intense pressure and temperature in the Earth's mantle, forming magma. The kinds of rocks involved determine the makeup of the magma. 2. Magma Ascent: Magma rises towards the Earth's surface because it is less dense than the nearby rocks. The buoyancy of the magma and the cracks and weaknesses in the Earth's crust allow for the movement. 3. Magma Chamber: A magma chamber is a reservoir where magma frequently builds up. The molten material is temporarily stored in this chamber. 4. Magma chamber formation: As the stress within the magma chamber will increase, it attempts to break out. This creates volcanic gases, which are conduits for magma to reach the surface. 5. Explosives: If the pressure is su...
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