Wind and waves form sand dunes on the beach
barchan dunes
Large piles of sand are called dunes.
barchan dunes
Wind erosion and deposition may form sand dunes and loess deposits. When the wind strikes an obstacle, the result is usually a sand dune!
sand dunes
Sand dunes that are at right angles to the wind are called Transverse Dunes. They form with weak winds and an abundant supply of sand.
Sand Dunes. Aeroflot
they form to stop the beach over loading with sand
There are only two sand dunes in Michigan. The two sand dunes are Sleeping Bear Dunes and Sliver lake sand dunes.
Scientificly, sand dunes were formed by chemical weathering.
Both form weather dune is has sand delta water