Fluvio-Glacial Landforms
Fluvio-Glacial Landforms
Fluvio-glacial landforms are landforms
molded by glacial meltwater.
There are 2 main fluvio-glacial features;
1) Outwash Plains
2) Eskers
Outwash Plains;
• This is made up of glacial material picked up by meltwater
and deposited beyond where the ice reached
• Outwash can also be deposited on top of boulder clay as the
ice melts
• The outwash plain is sorted and rounded because it has
been deposited by water
• The coarsest deposits (sands and gravel) are deposited first
and found nearest the ice; the finer deposits (clay, silt) are
deposited last and found furthest from the ice.
Eskers;
• These are long, narrow, sinuous ridges often several miles long.
• They are made of stratified glacial material (i.e. in layers) especially sand
and gravel picked up and deposited by water
• They are formed by rivers inside or under the melting ice being under
great pressure and so able to transport much sediment
• The sediment is deposited along the course of the sub-glacial river so
that, when the ice melts and the meltwater drains away, the raised bed of
the subglacial river is left as an esker
• Eskers are layered because, at different times, the meltwater river would
have differing amounts of energy and so deposits varying amounts of
material of different sizes.
Task 1:
Using your lithosphere book answer the following
questions.
1) What 4 types of material are transported by glaciers
2) Where are each carried on the glacier?
3) Explain the formation of a terminal moraine
4) What is an erratic?
5)
How is an outwash plain formed?
Homework!
Due in Friday 31st August
Answer the 2000 past paper question on glaciation
This is worth 6 marks. You are asked to explain the
processes involved in the formation of 2 landforms.
3 marks for a feature of glacial erosion
3 marks for a feature of glacial deposition
Therefore, you should be mentioning 6 key points
for each.
Write this in your homework diary!!!