Snowdonia - Glacial Landscapes Case Study
- Created by: IssyCalderwood
- Created on: 02-03-19 16:57
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- Snowdonia - Glacial Landscapes Case Study
- Facts
- North Wales = covered by ice in glacial periods
- Upland area = Glyders, mountains North East Snowdonia show many glacial landforms
- However, landforms since been modified by periglacial processes , fluvial action, weathering & human processes
- U-shaped valley - Nant Ffrancon
- Glacier flowed north westerly direction towards Anglesey coast = glacial trough
- River Ogwen flows in it but too small to create it = 'misfit stream'
- Curries and Tarns
- Llyn Bochlwyd & Llyn Idwal = tarns
- Sit above Nant Francon Vally in corries = Cwm Bochlwyd & Cwm Idwal
- Llyn Bochlwyd & Llyn Idwal = tarns
- Truncated Spur - Y Gribin
- Created by being cut off by Nant Ffrancon glacier
- Arete - Y Gribin
- Glaciers formed either side of ridge = eroded rock in-between
- Moraine
- Found around Llyn Ideal deposed by glaciers
- Terminal moraine = mouth, Lateral moraine = west side of tarn
- Found around Llyn Ideal deposed by glaciers
- Kame & Esker
- Kame & Esker near Pentir village
- Esker = 400m long, 10m high
- Formed by meltwater from Nant Francon glacier
- Kame & Esker near Pentir village
- Outwash Plain
- Glacier flowed in what now is Conwy Bay
- Flat expanse of glacial till near Aberogwen
- Plain has eroded to form cliffs = clear layers of glacial deposits
- Glacier flowed in what now is Conwy Bay
- Blockfields
- Formed by freeze-thaw weathering at Summit of Glyder Fach
- Facts
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