
Что такое магма определение


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What is magma? Definition
Magma is a molten or partially molten rock material found beneath the Earth's surface. It is formed through the melting of rocks in the Earth's mantle or crust. Magma consists of a mixture of various elements and compounds, including silicates, oxides, and gases. It is typically hot and has a lower density than the surrounding solid rocks, which allows it to rise towards the surface. When magma reaches the surface, it is called lava.
Magma plays a crucial role in the formation of igneous rocks, which are rocks that solidify from molten material. As magma cools and solidifies, it can form different types of igneous rocks, such as granite, basalt, and obsidian. The composition and characteristics of the resulting igneous rocks depend on the composition of the original magma and the cooling conditions.
Magma chambers are underground reservoirs where magma accumulates before it reaches the surface. These chambers can vary in size and shape, and they are often associated with volcanic activity. When the pressure of the magma chamber exceeds the strength of the overlying rocks, volcanic eruptions can occur, releasing magma and gases onto the Earth's surface.


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