What Is Basalt Extrusive Vs Granite Intrusive

With the insulation of the ground the cooling process is a lot slower allowing for the formation of larger mineral crystals.

What is basalt extrusive vs granite intrusive.

Examples of intrusive igneous rocks are diabase diorite gabbro granite pegmatite and peridotite. Basalt and granite are similar in the they are both igneous silicate rocks and common on earth. 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. Basalt is extrusive mafic and common throughout the solar system whereas granite is intrusive felsic and common only on earth.

On the other hand granite occurs above the ocean and makes up much of continental crust. Please update your bookmarks accordingly. One other difference between basalt and granite pertains to the way these two types of rocks split when putting under pressure. Granite is the best example of intrusive rocks whereas the basalt is a fine example of extrusive rocks.

These rocks include andesite basalt dacite obsidian pumice rhyolite scoria and tuff. Extrusive igneous rocks erupt onto the surface where they cool quickly to form small crystals. We have moved all content for this concept to for better organization. It contains more than 68 weight of silica in composition and is granular and coarse grained in texture.

Basalt by zureks cc by sa 3 0. Some cool so quickly that they form an amorphous glass. They also have numerous differences. Determination of intrusive and extrusive igneous rocks.

If found on the surface it will be in smaller particles. 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. An intrusive rock is formed when magma solidifies below the surface of the earth. Intrusive rocks are made up of enormous crystals whereas extrusive rocks have tiny crystals that can be seen only with a microscope.

Depending on where and how the magma cools igneous rocks are described as either intrusive or extrusive. Granite the equivalent of its extrusive volcanic rock type rhyolite is a very common type of intrusive igneous rock. Basalt is a dark colored fine grained igneous rock composed mainly of plagioclase and pyroxene minerals. Its principal minerals are feldspars quartz and mica.

Granite doesn t result from volcanic eruptions and is rarely found on the surface like extrusive rocks.