Earth and Environment EASC 111
Properties of Magma
Magma generation is one of the most important processes in the formation of the
Earth's crust. Magma is formed when mantle rocks melt and rise to the surface. This
process can be explained by the fact that the mantle is made up of hot, dense rocks
that are under great pressure. When these rocks are heated to a certain temperature,
they begin to melt and eventually rise to the surface.
Most magma is formed deep underground, but some volcanoes produce lava flows
that rise above ground. Magma is composed of molten rock and minerals that form
at temperatures between 1,200°C and 2,100°C. When magma rises through cracks
in the Earth’s crust, it cools and hardens into volcanic rocks. Magma is a liquid rock
that is heated from below. As a result, its chemical composition changes and it
becomes less dense than the surrounding rock. This causes the magma to rise toward
the surface where it solidifies into a hardened mass called lava. Lava is usually dark
gray or black in color. Volcanic eruptions occur when magma reaches the surface
and erupts through fissures in the earth’s crust. This results in a sudden release of
Properties of Magma
Magma generation is one of the most important processes in the formation of the
Earth's crust. Magma is formed when mantle rocks melt and rise to the surface. This
process can be explained by the fact that the mantle is made up of hot, dense rocks
that are under great pressure. When these rocks are heated to a certain temperature,
they begin to melt and eventually rise to the surface.
Most magma is formed deep underground, but some volcanoes produce lava flows
that rise above ground. Magma is composed of molten rock and minerals that form
at temperatures between 1,200°C and 2,100°C. When magma rises through cracks
in the Earth’s crust, it cools and hardens into volcanic rocks. Magma is a liquid rock
that is heated from below. As a result, its chemical composition changes and it
becomes less dense than the surrounding rock. This causes the magma to rise toward
the surface where it solidifies into a hardened mass called lava. Lava is usually dark
gray or black in color. Volcanic eruptions occur when magma reaches the surface
and erupts through fissures in the earth’s crust. This results in a sudden release of
