lec 4 - GE105 Continents Adrift Continents Adrift 11 Earths...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: GE105 Continents Adrift Continents Adrift 11 Earths layered structure Lecture 1. Introduction and course overview. Lecture 2. Distance and time. Lecture 3. Planet building and Earths layered structure. Lecture 4. Wegeners Continental Drift hypothesis. Lecture 5. Earths magnetic field and polar wander. Lecture 6. Reversals and sea floor spreading. Lecture 7. Plate tectonics spreading and rifting. Lecture 8. Plate tectonics collision. Lecture 9. The wave that shook the world (movie) Lecture 10. Earthquakes I. Lecture 11. Earthquakes II. Lecture 12. Volcanoes and mantle convection Lecture 13. Final Exam (FEBRUARY 17, 2011) GE105 GE105 Continents Adrift Continents Adrift 22 Earth as a layered planet MANTLE: bulk of the solid Earth , comprised of (Fe,Mg) Si03 and (Fe,Mg)O. CORE: Iron (Fe) and Nickel (Ni), liquid . Currents in the core generate Earths magnetic field The inner-core is solid . CRUST: The lighter elements (O, Si, Al), formed by melting of the mantle. The crust is about 10 km thick beneath the oceans and about 30-70 km beneath the continents . GE105 GE105 Continents Adrift Continents Adrift 33 Earth differentiation III Earths composition: From the 100 elements 8 elements make up 99% of Earths mass. In fact, only 4 elements make up 90% of Earths mass ....
View Full Document

Page1 / 19

lec 4 - GE105 Continents Adrift Continents Adrift 11 Earths...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online