Question

Q. Which of the following are glacial depositional landforms:

Select the correct answer using the code given below:

• A. 1, 2, 3 only
• B. 1, 2, 3, 4, 5
• C. 2,3 only
• D. 2, 3, 4, 5 only

Answer 1

The correct option is A 1, 2, 3 only

Explanations:

Glacial Depositional Landforms

Outwash plains

• When the glacier reaches its lowest point and melts, it leaves behind a stratified deposition material, consisting of rock debris, clay, sand, gravel etc. This layered surface is called till plain or an outwash plain.

Eskers

• Winding ridge of un-assorted depositions of rock, gravel, clay etc. running along a glacier in a till plain.
• The eskers resemble the features of an embankment and are often used for making roads.

Drumlins

• Inverted boat-shaped deposition in a till plain caused by deposition.

Glacial erosional landforms

U-shaped Valley

• Original stream-cut valley, further modified by glacial action.
• It is a ‘U’ Shaped Valley. It is a mature stage of valley formation.
• Since glacial mass is heavy and slow moving, erosional activity is uniform – horizontally as well as vertically.
• A steep-sided and flat bottomed valley results, which has a ‘U’ shaped profile.

Arete

• Steep-sided, sharp-tipped summit with the glacial activity cutting into it from two.