Rocks Types, Examples and Some of their Uses A2G скачать в хорошем качестве

Rocks Types, Examples and Some of their Uses A2G

Igneous rocks are formed when rocks are melted and then cool. Magma can cool slowly inside the crust and upper mantle of the Earth, forming rocks like granite. Granite has large minerals that can be seen with the naked eye. These are called plutonic rocks. Quick cooling magmas are generally erupted onto the Earth’s surface, called volcanic rocks. Igneous rocks are found where plates diverge, as lava rises and fills the gap between the plates. Igneous rocks also form where plates converge. The subducting plate melts as it sinks into the crust of the Earth, and the melt rises into the overriding plate forming volcanoes. Metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. If the pressure and temperature are too high, metamorphic rock will melt and become magma. Metamorphic rocks are most abundant at convergent plate boundaries, but can occur in other areas where there are increased pressures and/or temperatures. Sedimentary rocks form only on the surface of the Earth. Sedimentary rocks form in two main ways: (1) from clastic material (pieces of other rocks or fragments of skeletons) become cemented together, and (2) by chemical mechanisms including precipitation and evaporation. There are many environments associated with sedimentary rock formation, including oceans, lakes, deserts, rivers, beaches, and glaciers. They may form at all types of plate boundaries, but the thickest sedimentary rock accumulations occur at convergent plate boundaries. Fossils are associated with sedimentary rocks. Rock have numerous uses in this video also you will see some of the most common uses of Rocks. Music included RomanSenykMusic "Cinematic Chillhop" - by Zakhar Valaha, Music Link:    • Cinematic ChillHop | Inspiring Violin | Vi...