A rock can be defined as any articulate, naturally occurring substance which is generally made up of different mineral such as sandstone, granite, obsidian and non-rocks like: molten lava, concrete and beach sand among others. Rock cycle occurs as a result of rocks turning to any other rock type as time goes by. The main rocks which forms the rock cycle are: Igneous rocks, sedimentary rocks, metamorphic rock and molten. The rock cycle can also be defined as a sculpt used to describe changes to rocks that occurs on the earth, making it easier by showing how the rock is formed. The process of rocks formation takes place in two different surfaces which include process like erosion, weathering and deposition and other processes like melting occur below the surface.Molten rock formation
Molten rock which can also be described as magma is normally formed by the melting process of all other rocks like Metamorphic, sedimentary and igneous rocks. The rock is normally formed from the last process of heating and occurring of pressure from other rocks more so the metamorphic and igneous rock resulting to the formation of magma/molten rock.As described before, rock cycle keeps on circumrotating and a rock can be formed from any other rock. Igneous rock result as a solidification process of the magma /molten rock, therefore meaning if one could melt this rock he/she can get back the molten rock.Sediment is mainly formed as a result of weathering and erosion a process also known as deposition process. Sediments normally arise from the weathering process of rocks like metamorphic, sedimentary igneous rock that is, it result from the deposition of all other rocks therefore resulting to formation of sediments.
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Sedimentary rock is normally formed from sediments. That is, by dewatering the sediments components where these components mostly occur as a result of erosion and weathering. The process of sedimentary rock formation can also be referred to as cementation process therefore by cementation process from sediments, the resulting if sedimentary rock formation.Metamorphic rock
Since by melting metamorphic rock it results to formation of magma, the metamorphic rock is therefore a result of heat and pressure and therefore a process known as metamorphism results to the formation of metamorphic rock. Having gone through the rock cycle, it shows that a rock cycle is the formation of different rocks from any other types of a rock.