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A rock is any present solid mass or mixture of minerals or mineraloid matter. It's classified by the minerals enclosed, its chemical composition and also the means during which it's shaped. Rocks are sometimes sorted into 3 main groups: igneous rocks, metamorphic rocks and substance rocks. Rocks kind the Earth's outer solid layer, the crust. Igneous rocks are shaped once stone cools within the crust, or volcanic rock cools on the bottom surface or the bed. The metamorphic rocks are shaped once existing rocks are subjected to such massive pressures and temperatures that they're reworked, one thing that happens, for instance, once continental plates collide. The substance rocks are shaped by diagenesis or lithification of sediments that successively are shaped by the weathering, transport and deposition of existing rocks.
The scientific study of rocks is named geomorphology that is a necessary part of earth science. Rocks are composed of grains of minerals that are uniform solids shaped from a matter organized in associate degree orderly manner. The combination of minerals forming the rock are controlled along by chemical bonds. The kinds and abundance of minerals in a very rock are determined by the way during which it absolutely was shaped. Many rocks contain silicon dioxide (SiO2); a compound of atomic number 14 and gas that forms seventy four.3% of the crust. This material forms crystals with alternative compounds within the rock. The proportion of silicon dioxide in rocks and minerals could be a major consider determinative their names and properties.
Rocks are classified per characteristics like mineral and chemical composition, permeableness, the texture of the constituent particles, and particle size. These physical properties are the results of the processes that shaped the rocks. Over the course of your time, rocks will remodel from one kind into another, as delineated by an earth science model referred to as the rock cycle. This transformation produces 3 general categories of rock: igneous, substance, and metamorphic.

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Image category: Rock / Download Rock Zip / Parent category: Nature

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