Carniferous limestone G1
- Created by: geography unit 1
- Created on: 17-04-14 20:56
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- Carniferous limestone
- Characteristics
- Sedimentary, permeable to pervious
- forms upland hills in the UK eg. Pennines
- Horizontal joints called bedding planes between the layers of limestone. The joints promote freeze-thaw
- tough resistant rock, pervious rock
- Formed
- high grounds with exposure of bare rock & steep sided valleys
- Hard, grey, full of fossils (coral) , well jointed & permeable
- Limestone gorges formed
- limestone frozen underground
- During last Ice Age
- meltwater streams flowed on the surface
- eroding river beds
- Swallow holes formed
- chemical weathering causes surface of limestone pavement to be relatively smooth
- Water flowing over adjacent impermeable rocks disappears down holes in the limestone
- Resurgence formed
- when water flowing underground emerges onto the ground from a small cave
- Characteristics
- Water flowing over adjacent impermeable rocks disappears down holes in the limestone
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