ENSC 2001 Lecture Notes - Lecture 2: South American Plate, Seismic Wave, North American Plate

• School: Carleton University
• Department: Environmental Science
• Course: ENSC 2001
• Professor: Quentin Gall

Document Summary

Lithosphere when it deforms it deforms in a brittle manner. Upper most part of the mantle and the lowest part of the crust. The maximum temperature in the lithosphere 1200: crust outermost layer of the earth is the crust and is relatively colder than the other layers. layer of the earth. The first part is oceanic crust (underlies as oceans) dominated by volcanic rocks (basalts) rich in iron and magnesium. The density of the oceanic crust is about 3 g/cm2. The second part is continental crust, which underlies the continents. It is thicker and has average composition similar to granite. It is less dense than the oceanic crust and consists of the oldest rock on earth and thicker than oceanic crust: hydrosphere covering the earth, biosphere, atmosphere, magnetic sphere. Study of earth"s interior structure: knowledge primarily through the study of seismology, seismology study of earthquakes and seismic waves, examining the paths and speeds of seismic waves.