Ingenious Rocks

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INGENEOUS, SEDEMENTARY, AND METAMORPHIC ROCKS

Rocks are in order to make it easier on people to confirm them in the future. This can be done in a numerous ways. Each rock type has their own specific ways, but there are two different aspect that apply to all. The particular and composition. These two, before with some others help to classify igneous, sedimentary, and metamorphic rocks.
The First Group is Igneous rocks are historical first by construction. This is broken down mainly into grain size. First there are intrusive, or plutonic igneous rocks. These types of rocks cool within the crust and form large, visible crystals. The opposite would be extrusive, or volcanic rocks. “These rocks are characterized as either extrusive or intrusive”.
Types of Extrusive Rocks
Basalt is normally a dense, dark, massive rocks, high in calcium and iron magnesium- bearing minerals and low in quartz content.
Andesite is an extrusive rock intermediate in composition between rhyolite and basalt. Andesite lava is of moderate viscosity and forms thick lava flows and domes.
Rhyolite is a felsic extrusive rock. Due to the high silica content, rhyolite lava is very viscous. It flows slowly, like tooth paste squeezed out of a tube, and tends to pile up and form lava domes.
Intrusive igneous rocks are made from silica and plagioclase. They tend to be grays and browns in color. And then, felsic rocks are light in color and contains with some amphibole and biotitew.
Granite is an igneous rock composed mostly of two minerals: quartz and feldspar. It is an intrusive rock, meaning that it crystallized from magma that cooled far below the earth's surface.
Diorite is an intrusive rock intermediate in composition between gabbro and granite. It is produced in volcanic arcs, and in mountain building where it can occur in large volumes as batholiths in the roots of mountains.

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