The difference between extrusive and intrsive rocks are thatextrusive rock is a ingeous rock and formes by lava that erupes onto earth surface, and that intrusive rock is igneous rocks that hardenes beeatg earth's surface.
It is an example of extrusive igneous rock.
The longer that magma is able to cool, the larger the crystals will be. Intrusive rocks will have larger crystals than extrusive rocks. For example granite (intrusive) has larger grains than rhyolite (extrusive).
Intrusive:GraniteDioriteGabbroExtrusive:ObsidianBasaltRhyolite
No. A lahar is a mudflow formed by extrusive igneous material.
Intrusive igneous rocks can have chemically and mineralogically identical counterparts in their extrusive igneous equivalent. The only difference between the two rocks would be their method of formation and texture. Example: granite and rhyolite from the same source of magma.
It is an example of extrusive igneous rock.
coal
Yes.
Rocks formed by the crystallization of magma on the Earth's surface are extrusive rocks.
The longer that magma is able to cool, the larger the crystals will be. Intrusive rocks will have larger crystals than extrusive rocks. For example granite (intrusive) has larger grains than rhyolite (extrusive).
It is an example of extrusive igneous rock.
no because it is found inside a volcanoe
Basalt and rhyolite are examples of extrusive igneous rocks. Also, pumice, scoria, obsidian, tuff, ignimbrite,....
The two types are intrusive and extrusive. Intrusive are formed inside the earth an example being granite. Extrusive are formed on the earth's surface after a volcanic eruption an example being basalt.
Obsidian, which is volcanic glass, is a good example.
Yes extrusive rocks are fine grained because they cool down at a faster rate.
If a rock is intrusive, that means that it formed from magma inside the Earth. An example is granite. The opposite is extrusive, which forms from cooling lava from volcanoes. An extrusive rock is obsidian.