Sedimentary rocks are made up of pieces of older rocks (igneous, metamorphic, and sedimentary) and organic remains (shells, bone, etc.). When rocks break apart from erosion they are transported by ...

Igneous rock (derived from the Latin word ignis meaning fire), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is formed through the ...

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Igneous rocks are Earth’s original rocks. They form when magma (molten rock within the Earth) or lava (at the surface) cools to stone. The composition of the rock that melts and where that melt later ...