What Is Basalt Extrusive Vs Granite Intrusive

Basalt is a dark colored fine grained igneous rock composed mainly of plagioclase and pyroxene minerals.

What is basalt extrusive vs granite intrusive.

Determination of intrusive and extrusive igneous rocks. Its principal minerals are feldspars quartz and mica. Extrusive igneous rocks erupt onto the surface where they cool quickly to form small crystals. 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.

These rocks include andesite basalt dacite obsidian pumice rhyolite scoria and tuff. Granite is a great example of. It contains more than 68 weight of silica in composition and is granular and coarse grained in texture. We have moved all content for this concept to for better organization.

Basalt is an extrusive igneous rock whereas granite is an intrusive ingenuous rock. Examples of intrusive igneous rocks are diabase diorite gabbro granite pegmatite and peridotite. If found on the surface it will be in smaller particles. Granite the equivalent of its extrusive volcanic rock type rhyolite is a very common type of intrusive igneous rock.

Intrusive rocks are made up of enormous crystals whereas extrusive rocks have tiny crystals that can be seen only with a microscope. It most commonly forms as an extrusive rock such as a lava flow but can also form in small intrusive bodies such as an igneous dike or a thin sill it has a composition similar to gabbro the difference between basalt and gabbro is that basalt is a fine grained rock while. On the other hand granite occurs above the ocean and makes up much of continental crust. Basalt by zureks cc by sa 3 0.

They also have numerous differences. Please update your bookmarks accordingly. It s easy to confuse granite with other types of intrusive rocks like gabbro but it is very easy to differentiate it from extrusive rocks like basalt. Depending on where and how the magma cools igneous rocks are described as either intrusive or extrusive.

One other difference between basalt and granite pertains to the way these two types of rocks split when putting under pressure. Basalt is extrusive mafic and common throughout the solar system whereas granite is intrusive felsic and common only on earth. Granite doesn t result from volcanic eruptions and is rarely found on the surface like extrusive rocks. With the insulation of the ground the cooling process is a lot slower allowing for the formation of larger mineral crystals.

Some cool so quickly that they form an amorphous glass.