User:Awatkinstu

The Rock Cycle

The rock cycle is based on the three basic rock types; igneous, sedimentary, and metamorphic. Igneous rocks are made from melted rock, sedimentary are made from pieces of other rocks, and metamorphic are rocks that have "changed form". The rock cycle states that "any rock caqn be changed into any other rock under the correct conditions". Examples would be; igneous rock can be changed into metamorphic by putting the rock under extreme heat and pressure. Sedimentary rock can be changed into igneous rock by melting it.

Refrences;

Wicander, R. Physical Geology: 5th ed. USA: Thomson

Conte, D. Earth Science. Oxford, England. Brown Publishers

Tarbuck and Lutgens. Earth Science: 11th ed. Upper Saddle River, New Jersey. Pearson/Prentice Hall