Question

Which of the following is not an aeolian landform?

• A. Yardang
• B. Barchan
• C. Zeugen
• D. Esker

Hint:

Remember these landforms: \[ \boxed{ \begin{aligned} \text{Yardang} &\rightarrow \text{Wind Erosion}, \text{Zeugen} &\rightarrow \text{Wind Erosion}, \text{Barchan} &\rightarrow \text{Wind Deposition}, \text{Esker} &\rightarrow \text{Glacial Deposition}. \end{aligned} } \] Mnemonic: “Esker = Ice, not Wind.”

Answer 1

The Correct Option is D

Concept: Aeolian landforms are created by the action of wind through erosion, transportation, and deposition. An Esker is a depositional landform formed by meltwater streams flowing beneath glaciers, making it a glacial landform rather than an aeolian one.

Step 1: Examine each landform. \[ \begin{aligned} A. &\ \text{Yardang} \rightarrow \text{Aeolian erosional landform.} B. &\ \text{Barchan} \rightarrow \text{Aeolian depositional sand dune.} C. &\ \text{Zeugen} \rightarrow \text{Aeolian erosional landform.} D. &\ \text{Esker} \rightarrow \text{Glacial depositional landform.} \end{aligned} \]

Step 2: Identify the non-aeolian landform. \[ \boxed{\text{Esker}} \] Hence, \[ \boxed{\text{(D)}} \]