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The Rock Cycle
Igneous Rock
Igneous rock is formed when molten rock also known as magma that solidifies either underneath the earths crust to form plutoni. Ingeous rock is one of the three main rock types,the others are Sedimentry and Metamorphic
Igneous
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 cooling and solidification of magma or lava.
Molten materials are found below the earth crust and are normally subjected to extreme pressure and temperatures – up to 1200° Celsius.Due to the high temperatures and pressure changes, the molten materials sometimes shoot up to the surface in the form of volcanic eruption and they cool down to form volcanic or extrusive igneous rocks.ometimes, the cooling is so rapid as to prevent the formation of even small crystals after extrusion, resulting in rock that may be mostly glass (such as obsidian).
Metamorphic Rock
Metamorphic rock is rock that forms when a rock is changed by heat presser or chemical reactions there are many different pathways to get to Metamorphic rock. For example a igneos rock can turn into a metamorphic rock by falling into a volcano shoots out and then that magma cools.
Metamorphic Rock
Metamorphic rock is formed when the original rock is subjected into extreme heat and pressure beneath the earths surface.Types of metamorphic rock are marble,slate,schist and gneiss.Marble is the result of metamorphism of dolostone and limestone.
More about Metamorphic rock
Metamorphic rock forms when rocks fall into a volcano and feel pressure then fly out.
Rock that has formed through the deposition and solidification of sediment, especially sediment transported by water (rivers, lakes, and oceans), ice ( glaciers ), and wind. Sedimentary rocks are often deposited in layers, and frequently contain fossils. Note : Limestone and shale are common sedimentary rocks.
Sedimentry
The rock cycle