GEOB 103 Lecture Notes - East African Rift, San Andreas Fault, Juan De Fuca Plate
28 Apr 2013
School
Department
Course
Professor
Document Summary
Inner core is solid iron & some nickel. A solid shell of ultramafic materials surrounding the core. Thin outer layer composed of mafic (mg, fe) and felsic (ca, al, si) rocks mostly igneous. Boundary between crust and mantle is sharp; known as the mohorovicic discontinuity (moho) 2 layers upper felsic and lower mafic. Crust: thin outer layer of the earth. All the relief on the earth"s surface (from high mountains to low ocean floors) is contained in the. 8. 5km thick top ~10km (0. 2% of total thickness) Rock: a solid, cohesive aggregate of grains composed of one or more minerals. Sediment: generally unconsolidated inorganic materials originally derived from weathering and erosion (fractionation) of rocks. Deposited after transport by water, ice, air, or gravity. Organic matter: deposits composed of mainly dead and decaying matter from organisms (plans. ***the circulation of rocks = a slow process powered by the heat of earth"s interior. Formed by crystallization of (cooling) of molten material (magma)
