Intrusive igneous rock definition
Gabbro is a coarsegrained, darkcolored, intrusive igneous rock. It is usually black or dark green in color and composed mainly of the minerals plagioclase and augite. It is the most abundant rock in the deep oceanic crust. Gabbro has a variety of uses in the construction industry.Extrusive rock, any rock derived from magma (molten silicate material) that was poured out or ejected at Earths surface. By contrast, intrusive rocks are formed from magma that was forced into older rocks at depth within Earths crust; the molten material then slowly solidifies below Earths surface, where it may later be exposed through erosion. intrusive igneous rock definition
Intrusive Rocks Igneous rocks which form by the crystallization of magma at a depth within the Earth are called intrusive rocks. Intrusive rocks are characterized by large crystal sizes, i. e. , their visual appearance shows individual crystals interlocked together to form the rock mass.
Intrusive igneous rock definition free
noting or pertaining to a class of igneous rocks that have been forced out in a molten or plastic condition upon the surface of the earth.
Alternative Titles: intrusive igneous rock, plutonic rock Intrusive rock, also called plutonic rock, igneous rock formed from magma forced into older rocks at depths within the Earths crust, which then slowly solidifies below the Earths surface, though it may later be exposed by erosion.
In that notion, igneous rocks occur when molten rock turns into solid either below the earth's crust to create intrusive igneous rocks or on the earth's surface to create extrusive igneous rocks. They are rocks that are produced via heating followed by solidification through cooling.
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Intrusive rocks are a type of igneous rock. Igneous rocks are rocks that form from cooled magma. Intrusive rocks are igneous rocks that form from crystallized magma beneath the earth's surface.
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Granite is the most common intrusive igneous rock as the continental crust is composed of granite. Granite has mineral crystals that can be seen clearly with the naked eye.
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