Unit 1A - Rocks and Landscapes
- Created by: Ajensen776
- Created on: 07-04-14 17:07
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- Rocks and Landscapes
- Granite Landscapes
- Granite has lots of joints which aren't evenly spread
- Freeze-thaw and chemical weathering wear down the parts of the rock with lots of joints faster because there are more cracks for the water to get into
- Parts of the granite that have fewer joints are weathered more slowly than the surrounding rock and stick out at the surface forming tors
- Granite is also impermeable
- This creates moorlands
- It doesn't let water through
- Granite is also impermeable
- Parts of the granite that have fewer joints are weathered more slowly than the surrounding rock and stick out at the surface forming tors
- Freeze-thaw and chemical weathering wear down the parts of the rock with lots of joints faster because there are more cracks for the water to get into
- Granite has lots of joints which aren't evenly spread
- Chalk and Clay Landscapes
- Horizontal layers of chalk and clay are sometimes tilted diagonally by the Earth's movement
- The clay is less resistant than the chalk
- The chalk is left sticking out forming escarpments. Where the clay has been eroded it forms vales
- Escarpments have steep slopes (Scarp slopes) and gentle slopes (Dip slopes)
- Chalk is an aquifer
- A permeable rock that stores water
- Water flows through chalk and emerges where the chalk meets impermeable rock
- Called a spring line
- Areas of chalk can also have dry valleys
- Chalk is an aquifer
- Escarpments have steep slopes (Scarp slopes) and gentle slopes (Dip slopes)
- The chalk is left sticking out forming escarpments. Where the clay has been eroded it forms vales
- The clay is less resistant than the chalk
- Horizontal layers of chalk and clay are sometimes tilted diagonally by the Earth's movement
- Carboniferous limestone forms surface and underground features
- Surface
- Limestone Pavements
- Swallow Holes
- Limestone Gorge
- Underground
- Caverns
- Stalactites
- Stalagmites
- Pillar
- Surface
- Granite Landscapes
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