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Metamorphic rocks
These rocks form when Sedimentary and Igneous are heated and pressured from burial or contact with Igneous Rocks. when the rock is heated and pressured from burial causes molecules of flat minerals like mica to line up perpendicular to the direction of greatest compression. when buried very deeply means higher pressure and hotter temperatures (since you get closers to the center of the Earth), and very high temperature and pressures cause the formation of new minerals. Some Metamorphic rocks like break in flat pieces, and have a sheen on the surface. Examples of Metamorphic rocks are Quartzite, Marble, Slate, Gneiss, Schist, etc.
Visit other related links : Rocks and Rock Cycle, Igneous Rocks and Sedimentary Rocks
These rocks form when Sedimentary and Igneous are heated and pressured from burial or contact with Igneous Rocks. when the rock is heated and pressured from burial causes molecules of flat minerals like mica to line up perpendicular to the direction of greatest compression. when buried very deeply means higher pressure and hotter temperatures (since you get closers to the center of the Earth), and very high temperature and pressures cause the formation of new minerals. Some Metamorphic rocks like break in flat pieces, and have a sheen on the surface. Examples of Metamorphic rocks are Quartzite, Marble, Slate, Gneiss, Schist, etc.
Visit other related links : Rocks and Rock Cycle, Igneous Rocks and Sedimentary Rocks