Outrageously Funny Word Dictionary :: Sanddune

👉 The term "sanddune" is used in geology to describe a type of sedimentary rock formation that forms on the surface or near the surface of a river, lake, or ocean. These rocks are composed primarily of fine-grained sand and often contain small particles of clay and other materials, such as silt, gravel, and pebbles. They are typically formed by erosion by water, wind, or ice, and are found in both arid and humid environments.

sanddune