Class Notes (838,386)
Canada (510,872)
Geography (11)
GEOG 1120 (11)
Lecture 2

GEOG 1120 Lecture 2: Plate Tectonics

3 Pages
Unlock Document

GEOG 1120
John Martin

find more resources at Lecture 2: Plate Tectonics I. Structure of Earth: 1. Chemical - Elements: Oxygen, Silicon, Aluminum, Iron. - Crust => Two types: 1. Oceanic Crust (OC) => Elements: Fe, Mg => "Mafic". => Heavier; Higher Density. 2. Continental Crust (CC) => Elements: Si, O. => Lighter elements; Lower Density. - Mantle => Elements: 0, Mg, Si, Fe; located between the Core and the Crust. - Core => Elements: Fe, Ni. 2. Physical - Crust = Lithosphere (crust and upper mantle). => Solid layer. - Asthenosphere = (2nd layer) upper mantle; Plastic (halfway between solid and liquid layer). - Mesosphere = mantle, solid layer. - Core = has two layers => Inner Core and Outer Core. find more resources at find more resources at => Has an ability of magnetic field - protective properties. II. Basics - Lithosphere divided into plates. - Most plates have both continental and oceanic crust. => Ex: Africa, Eurasia, Antartica. - Plates in motion can trigger earthquakes and they are very deadly plates. III. Plate Tectonics A. Divergent Plate Boundary: - "Fiston Theory" - Also called as constructive boundary (new young rocks are being formed; making new rocks). - Have classic characteristics. - Ex: The Great Reef in Africa (Rift Valley). - Chemistry of rock is simila
More Less

Related notes for GEOG 1120

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.