Information Security

In: Computers and Technology

Submitted By seandoresey1980
Words 328
Pages 2
Sean Davis GE 254 8/12/13

The Rock Cycle
The rock cycle is the natural transformation of rock over a period of time. Rocks are created and destroyed in cycles. The rock cycle is a model that describes the formation, breakdown, and reformation of a rock as a result of sedimentary, igneous, and metamorphic processes. Rocks are made of minerals; which are naturally occurring, crystalline solid of definite chemical composition and a characteristic crystal structure. Rocks are any naturally formed, nonliving, firm, and clear aggregate mass of solid matter that constitutes part of a planet. Igneous rocks are formed from magma cooling underground, or lava above ground are formed from prior igneous, metamorphic, or sedimentary rocks which have become melted, usually as a result of plate collision and seduction. When these igneous rocks are exposed to weathering and corrosion, they break down into smaller particles that are moved by wind and water to a place of deposition, where they can form into sedimentary rock strata, through a process where excess water is squeezed out by overburden pressures and the particles are cemented together by various minerals precipitating out of solution. Igneous and metamorphic rocks can both be turned into sedimentary rocks in this way. Igneous and sedimentary rocks can also be changed by heat and/or pressure into metamorphic rocks, by transforming their existing mineral structures into new minerals or realigning the existing minerals. There are different degrees of metamorphism, so even an existing metamorphic rock can become a different metamorphic rock.

Sean Davis GE 254 8/12/13

The Rock Cycle
If these metamorphic rocks are melted, then solidify, they become igneous rocks, and the cycle starts all over again. The rock cycle is largely driven by lithospheric plate movements which cause seduction and uplift, also by…...

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