Which one of the following statements about sand dunes is correct?
A)A dune migrates in the direction of inclination of the slip face.
B)The more gently sloping surface is the leeward slope of the dune.
C)Sand is blown up the slip face and rolls down the more gently sloping flank of the dune.
D)In a sand dune, the more gently inclined strata lie parallel to the slip face.

Question

Quizplus · Accepted Answer

A dune migrates in the direction of inclination of the slip face due to the constant accumulation of sand on the windward side and erosion on the leeward side. The slip face is the steeper slope facing downwind, and sand is blown up this face and deposited at the top before rolling down the leeward slope, which is the more gently sloping side. The strata in a sand dune are also inclined in the same direction as the slip face.

Which One of the Following Statements About Sand Dunes Is