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In this lesson we are going to discuss about the features resulting from glacial deposition

Answer Text:
Features Resulting From Glacial Deposition
a) Till Plain

- Extensive area of flat relief resulting from burying of former valleys and hills by glacial deposits.
b) Erratics
- Large boulders of resistant rocks transported by glacier from highland and deposited on the till plain.
c) Drumlins

- Long egg shaped hills deposited and shaped under an ice sheet of very broad glacier.
- Glacier deposits boulder clay at the valley bottom due to friction between the bed rock and the boulder clay.
- With more deposition large mounds of deposits are formed.
- The moving ice streamlines the till that has been deposited irregularly resulting into the upstream sides of the till being
steep but smoothed.
d) Terminal Moraine Ridge

- Ridge like feature formed by extensive deposition of moraine along the edge of an ice sheet.
- Ice remains stagnant for a very long time.
- The ice at the edges of sheet melt and a lot of materials are deposited.
e) Eskers

- Long winding ridge composed of gravel formed by glacial deposition.
- Streams carrying large amounts of load flow fast in a sub-glacial tunnel parallel to the direction of moving ice.
- When the ice melts the tunnels collapse causing streams to slow down and deposit much of the load forming a ridge.
f) Kame

- Isolated hill made of sand and gravel which have been deposited in strata by glacial water.
g) Kame Terrace
- Ridge of sand and gravel occurring in narrow lakes that exist between the glacier and an adjacent highland.
h) Outwash Plains

- Wide gently sloping plain composed of gravel and sand formed by glacial deposition.
- Formed when finer materials of terminal moraine are deposited in very thick layers over an extensive area forming a plain.