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Published byMilena Sobczyk Modified over 5 years ago
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Ribbon/Finger Lakes: Lake caused by glaciers carving deep grooves in less resistant rock
Fjords: Glacial valleys/ troughs filled with ocean water Kettle Lakes: Depression formed after an isolated block of ice melts.
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Erosional Features: Finger Lakes
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Erosional Features: Fjords
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Erosional Features: Kettle Lakes
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Depositional Features
Lateral Moraine: Till collected on valley sides by rock falls and plucking off valley walls. Medial Moraine: Formed by meeting of lateral moraines as two glaciers meet Terminal/End Moraine: Deposited at the furthest point of glacial advance.
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Depositional Features: Moraines
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An esker is a snake-shaped deposit of till, formed when running water flows through paths along the bottom of a glacier Crevasses are deep cracks in the surface of a glacier. They can be extremely dangerous to anyone walking on a glacier An icefall is when huge blocks of ice fall off the sides of a glacier
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Features of Continental Glaciers
Outwash Plains/ Lacustrine Deposits: Sand and other sediment deposited by glacial melting. Erratics are large boulders that are left in odd locations when glaciers melt A roche moutonee is formed when a glacier moves over outcrops of bedrock. The side facing the glacier is polished smooth, while the other side is jagged from plucking
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Depositional Features: Outwash Plains
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Drumlin: Hill made up of deposits from glaciers movement.
Continental glaciers produce many similar features to alpine glacier, such as U-shaped valleys and hanging valleys
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Benefits of glaciers Glaciers left behind much of our fresh water, in the form of lakes Glaciers created the wide u-shaped valleys in which many people live (especially in BC) Many gravel and sand deposits come from glacial drift Glacial deposits provide rich soil in many areas
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