How is ice-flow direction identified from a roche moutonnée?
Answer and explanation
Correct answer: Smooth stoss side indicates ice approach and rough lee side indicates ice departure
A roche moutonnée is an asymmetrical bedrock knob shaped by glacier movement. The up-ice, or stoss, side is polished and streamlined by abrasion as debris-laden ice passes over it. The down-ice, or lee, side is steeper and rougher because pressure release and plucking remove blocks. This asymmetry reveals the former ice-flow direction.
Frequently asked questions
What is the correct answer to this question?
Smooth stoss side indicates ice approach and rough lee side indicates ice departure
Why is this the correct answer?
A roche moutonnée is an asymmetrical bedrock knob shaped by glacier movement. The up-ice, or stoss, side is polished and streamlined by abrasion as debris-laden ice passes over it. The down-ice, or lee, side is steeper and rougher because pressure release and plucking remove blocks. This asymmetry reveals the former ice-flow direction.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Recording of Transactions (I & II). Topic: Covers the accounting equation.
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