Differentiate the composition and texture of a plutonic igneous rock and a volcanic igneous rock.

Rocks made when, molten rocks cools and solidifies are known as igneous rocks. There are two kinds of igneous rocks:

1. Volcanic igneous rocks: These are formed when lava cools and solidifies on the surface of the Earth. These are also known as extrusive igneous rocks. These rocks cool faster than the Plutonic igneous rocks. Small mineral crystals are formed. These are fine-grained. These types of rock are composed of silica. Depending on different quantity of silica, these are known as Basalt, Andesites, Dacites, Rhyolite, Pumice and Obsidian.

2. Plutonic igneous rocks: These are formed when the magma cools and solidifies below the surface of Earth.  These are also known as intrusive igneous rocks. Since these rocks  have slow rate of formation, large mineral crystals are formed. These are coarse grained. These types of rock are composed of silica. Depending on different quantity of silica, these are known as Gabbro, Diorite, Granite and Pegmatite.

Volcanic rocks are rocks made when lava cools and hardens on the surface of the earth. Plutonic rocks are rocks made when magma cools and hardens beneath the surface of the earth. They both are types of igneous rocks. The volcanic rocks comprise little diamonds and may still produce a smooth presentation or still chill so quickly that they confine vapor droplets in the ore.

This provides us very thin, penetrable volcanic ores like pumice. It is used to smooth dry skin on the heels of your feet. In plutonic rocks, magma is below high pressure and needs a great time to chill. Also it provides time for the development of large crystals. Therefore, plutonic rocks have coarse-grained diamonds.

car stops. he keeps going = he has inertia

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