Geography · Geomorphology & Glacial Landforms
Which of the following statements most accurately describes the formation, composition, and geomorphic importance of eskers in glacial landscapes?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Eskers form due to lateral morainic deposition along valley sides and primarily indicate the maximum extent of glacial advance.
- 2Eskers are depositional features formed by wind action on glacial outwash plains, consisting mainly of fine loess deposits.
- 3Eskers are sinuous ridges of stratified sand and gravel deposited by subglacial meltwater streams flowing within ice tunnels.✓
- 4Eskers are steep-sided, elongated ridges composed mainly of till, formed by subaerial erosion during glacial retreat.
Correct answer
Eskers are sinuous ridges of stratified sand and gravel deposited by subglacial meltwater streams flowing within ice tunnels.
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