History of the Earth
General Events and their significance
- Earth born 4.55 bya.
- Differentiation of earth (enabled a stable Earth surface and formation of magnetic field).
- Formation of moon. Stabilizes Earth's rotation and drives tides. Necessary for life!
- Then life! Singled celled organisms arose.
- Magnetic field formation
- Stable atmosphere formation
-
Solid Earth
Layers of the Earth
Convection
Drives movement of plates.
Plate Tectonics
- Convergent boundary (can be between land/ocean plates).
- Divergent boundary (
- Transform fault (ie San Andreas Fault).
- Hotspot
Need to review
- Ocean circulation (wind driven and thermohaline circulation)
- Deepwater formation
- Upwelling/downwelling
- Ocean structure
New Note
Description