Glacial Systems & Landscapes: Fluvioglacial Processes and Landforms
- Created by: IssyCalderwood
- Created on: 19-12-18 17:11
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- Fluvioglacial Processes and Landforms
- Formation of Meltwater Streams
- Warm based glaciers retreat = meltwater
- Meltwater filters through tunnels
- Erosive powers = Meltwater streams
- Meltwater filters through tunnels
- Warm based glaciers retreat = meltwater
- Fluvioglacial Deposits from Meltwater
- Meltwater carries sediment
- Outwash Plains
- A.K.A Sandur
- Layers of gravel, sand and clay form where snout used to be
- Layers: gravel dropped first (heavy) = bottom layer
- Clay dropped last (lightest) = top layer
- Sand in middle
- Layers
- Layers
- Sand in middle
- Clay dropped last (lightest) = top layer
- Sidenote: layers are formed at snout each time glacier retreats more, not formed by a single deposit
- Layers: gravel dropped first (heavy) = bottom layer
- Kames and Eskers
- Eskers = ridges in same direction as glacier
- Tunnels = sediment
- Glacier retreats = sediment remains
- Tunnels = sediment
- Kames = mounds of sand and gravel
- Forms on top of glaciers
- Ice melts = debris dumped
- Forms on top of glaciers
- Kame Terraces = deposits against valley wall
- Meltwater streams run between glacier and valley side and deposit sediment
- Meltwater streams run between glacier and valley side and deposit sediment
- Proglacial lakes = meltwater streams dammed by terminal moraine
- Deltas = entrance to proglacial lake slows down stream so sediment deposits on ice
- Delta Kames = ice melts, deltas are dumped on valley floor
- Deltas can also form in crevasses on glacier
- Delta Kames = ice melts, deltas are dumped on valley floor
- Deltas = entrance to proglacial lake slows down stream so sediment deposits on ice
- Eskers = ridges in same direction as glacier
- Formation of Meltwater Streams
- Warm based glaciers retreat = meltwater
- Meltwater filters through tunnels
- Erosive powers = Meltwater streams
- Meltwater filters through tunnels
- Eskers = ridges in same direction as glacier
- Tunnels = sediment
- Glacier retreats = sediment remains
- Tunnels = sediment
- Deltas = entrance to proglacial lake slows down stream so sediment deposits on ice
- Deltas can also form in crevasses on glacier
- Deltas can also form in crevasses on glacier
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