Forms Quickly From Lava. texture is controlled by the rate of cooling: when lava erupts from a volcano, it cools quickly and forms volcanic or extrusive igneous rocks. when lava comes out of a volcano and solidifies into extrusive igneous rock, also called volcanic, the rock cools. If magma remains trapped beneath the surface and cools there, it forms intrusive or plutonic igneous rocks. Magma that cools slowly deep in the earth forms rock with large crystals, and lava that cools quickly on the surface. the lava comes from the upper mantle layer, 30 to 90 miles beneath the surface, and cools within a few weeks. how quickly lava flows move, and how far they go, depends upon the type of magma that's erupting. when magma quickly rises to the surface as lava, these volatiles sometimes become trapped in the cooling molten rock and form a bubbling texture.
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when magma quickly rises to the surface as lava, these volatiles sometimes become trapped in the cooling molten rock and form a bubbling texture. when lava erupts from a volcano, it cools quickly and forms volcanic or extrusive igneous rocks. when lava comes out of a volcano and solidifies into extrusive igneous rock, also called volcanic, the rock cools. how quickly lava flows move, and how far they go, depends upon the type of magma that's erupting. texture is controlled by the rate of cooling: the lava comes from the upper mantle layer, 30 to 90 miles beneath the surface, and cools within a few weeks. If magma remains trapped beneath the surface and cools there, it forms intrusive or plutonic igneous rocks. Magma that cools slowly deep in the earth forms rock with large crystals, and lava that cools quickly on the surface.
Igneous rocks
Forms Quickly From Lava If magma remains trapped beneath the surface and cools there, it forms intrusive or plutonic igneous rocks. when lava comes out of a volcano and solidifies into extrusive igneous rock, also called volcanic, the rock cools. If magma remains trapped beneath the surface and cools there, it forms intrusive or plutonic igneous rocks. the lava comes from the upper mantle layer, 30 to 90 miles beneath the surface, and cools within a few weeks. texture is controlled by the rate of cooling: how quickly lava flows move, and how far they go, depends upon the type of magma that's erupting. when magma quickly rises to the surface as lava, these volatiles sometimes become trapped in the cooling molten rock and form a bubbling texture. Magma that cools slowly deep in the earth forms rock with large crystals, and lava that cools quickly on the surface. when lava erupts from a volcano, it cools quickly and forms volcanic or extrusive igneous rocks.
