GENERAL GEOLOGY

Detailed explanation-1: -A dune is a mound of sand this is formed by the wind, usually along the beach or in a desert. Dunes form when wind blows sand into a sheltered area behind an obstacle.

Detailed explanation-2: -The Landform created by the erosional and depositional activities in the form of wind is called Aeolian landforms.

Detailed explanation-3: -Sand dunes are created when wind deposits sand on top of each other until a small mound starts to form. Once that first mound forms, sand piles up on the windward side more and more until the edge of the dune collapses under its own weight.

Detailed explanation-4: -Wind abrasion Abrasion is the process of erosion produced by the suspended particles that impact on solid objects. Windblown grains of sand, carried along at high speed, are a very effective tool that can sandblast away rocks by abrasion.

Detailed explanation-5: -Erosion by water and wind can wear down land and create landforms like valleys and canyons. Both processes happen over a long period of time, sometimes millions of years.