Rocks will blow off your socks

Three types of rocks

First, there is igneous rocks. Igneous rocks form by cooling from a melt. If they erupt from volcanoes as lava, they are called extrusive rocks. If they cool underground but near the surface, they are called intrusive and often have visible, but tiny mineral grains. If they cool very slowly deep underground, they are called plutonic. Some examples for igneous rocks are granite, basalt, granite, pumice, obsidian, tuff, diorite, gabbro and andesite. Another fact is, it may form with or without crystallization either below the surface or on the surface. Then, metamorphic rocks.A metamorphic rock forms deep in the Earth when heat and pressure are applied . Some examples of metamorphic rock are quartzite, marble, and slate. Metamorphic rocks can be formed by pressure deep under the Earth's surface, from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates. Another fact about metamorphic rocks are they're made of different minerals than rocks and have a wide range of color and luster. Finally, sedimentary rocks. Sedimentary rocks are formed by the deposition of material at the Earth's surface and within bodies of water. Examples of sedimentary rocks are limestone, sandstone, mudstone, greywacke, chalk, coal, claystone, and flint. Another fact is sedimentary rocks cover the majority of the Earth's rocky surface but only make up a small percentage of the Earth’s crust. That is the three types of rocks! Igneous, metamorphic, and sedimentary rock.

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