Is Granite An Example Of Intrusive Igneous Rock

Magma crystallizes slowly underground.

Is granite an example of intrusive igneous rock.

Examples of intrusive igneous rocks are diabase diorite gabbro granite pegmatite and peridotite. Granite has mineral crystals that can be seen clearly with the naked eye. Intrusive rocks that crystallized at depths of several km. It forms from the slow crystallization of magma below earth s surface.

At these depths magma is insulated by the rocks around it and cools very slowly growing large interlocking crystals. Intrusive igneous rocks form when. If the intrusive rock cooled underground but near the surface it is called subvolcanic or hypabyssal and often has visible but tiny mineral grains. Basalt and gabbro are the extrusive and intrusive names for mafic igneous rocks and peridotite is ultramafic with komatiite as the fine grained extrusive equivalent.

Examples include granite gabbro diorite and dunite. What are igneous rocks. Granite is a light colored igneous rock with grains large enough to be visible with the unaided eye. Granite is composed mainly of quartz and feldspar with minor amounts of mica amphiboles and other minerals this mineral composition usually gives granite a red pink gray or white color with dark mineral.

Intrusive igneous rocks crystallize below earth s surface and the slow cooling that occurs there allows large crystals to form. Granite is the most common intrusive igneous rock as the continental crust is composed of granite. Granite is an intrusive type of igneous rock also since it is intrusive it cools very slowly and forms large crystals and coarse large grained igneous rock. Intrusive or plutonic igneous rocks form when magma cools slowly below the earth s surface most intrusive rocks have large well formed crystals.

There are two basic types. The result is a coarse grained rock phaneritic example. Igneous rocks are those that form via the process of melting and cooling. Igneous rocks are formed from the solidification of molten rock material.

Komatiite is a rare rock because volcanic material that comes directly from the mantle is not common although some examples can be found in ancient archean rocks 2. If they erupt from volcanoes onto the surface as lava they are called extrusive rocks by contrast intrusive rocks are formed from magma that cools underground.