A yellow dune is a type of coastal sand dune that is characterized by its yellowish color, resulting from the presence of iron oxide coatings on sand grains. Yellow dunes are significant in coastal geomorphology for understanding the processes of dune formation, the role of vegetation in stabilizing dunes, and the impact of wind and waves on coastal landscapes.
Reference: Pye, K., & Tsoar, H. (1990). “Aeolian Sand and Sand Dunes.” Springer.