Is Granite An Example Of Intrusive Igneous Rock

Molten rock that has erupted onto the earth s surface.

Is granite an example of intrusive igneous rock.

What are igneous rocks. 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. 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. It forms from the slow crystallization of magma below earth s surface.

If the intrusive rock cooled underground but near the surface it is called subvolcanic or hypabyssal and often has visible but tiny mineral grains. Granite is a light colored plutonic rock found granite dikes are clearly igneous and granite emplaced in the zinc gold and silver for example igneous rocks are formed and created by igneous rocks are divided into two types granite is a coarse grained intrusive rock which contains the. Intrusive or plutonic igneous rocks form when magma cools slowly below the earth s surface most intrusive rocks have large well formed crystals. 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.

Magma crystallizes slowly underground. Granite is a light colored igneous rock with grains large enough to be visible with the unaided eye. Granite is an intrusive igneous rock which means it crystallized from molten rock called magma miles underground. Examples include granite gabbro diorite and dunite.

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. Granite is the most common intrusive igneous rock as the continental crust is composed of granite. Igneous rocks are formed from the solidification of molten rock material. Igneous rocks are those that form via the process of melting and cooling.

At these depths magma is insulated by the rocks around it and cools very slowly growing large interlocking crystals. Examples of intrusive igneous rocks are diabase diorite gabbro granite pegmatite and peridotite. 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. Granite has mineral crystals that can be seen clearly with the naked eye.

The result is a coarse grained rock phaneritic example. Intrusive igneous rocks crystallize below earth s surface and the slow cooling that occurs there allows large crystals to form.