Processes of Plate Tectonics
- Created by: SamGam
- Created on: 31-01-16 22:21
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- Processes of Plate Tectonics
- Evidence of Plate Tectonics
- Biology: Fossil evidence suggest species of animals maybe have lived on continents that were once connected
- Geology: Similar rock layers, types and structures found in separate suggest they formed together
- Sea-floor spreading: A continuous mountain range with new rocks running down the centre that get older as you move away. For example the Mid-Atlantic Ridge
- Climatology: Evidence of glaciation in warm places and coal in cold climates suggests continents were in different places
- Structure of the Earth
- Core: A solid nickel and iron inner core & and a molten iron outer core. Gives Earth its magnetic field and reaches 5000 degrees celsius
- Mantle: A mixture of molten and semi-molten rock as well as oxygen and silicon, sodium and other elements
- Crust: The surface layer. Made of solid rock with a thickness varying from 6km to in excess of 70km
- Oceanic Crust: -6-10km thick ->200 million -Heavier -Basalt SIMA
- Continental Crust:30-70km
- Evidence of Plate Tectonics
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