Vikidia currently has 3,023 articles. Improve it!

Join Vikidia: create your account now and improve it!

Erg (landform)

From Vikidia, the encyclopedia for 8 to 13-year-old children that everybody can make better
Jump to: navigation, search
Sand dunes in the Sahara desert (photography taken in January)

An erg (also sand sea or dune sea, or sand sheet if it lacks dunes) is a broad, flat area of desert covered with wind-swept sand with little or no vegetative cover. An erg is defined as a desert area that contains more than 125 square kilometres (48 sq mi) of aeolian or wind-blown sand and where sand covers more than 20% of the surface.

Smaller areas are known as "dune fields".

Blank map of the world (Robinson projection) (10E).svg Geography Portal — Everything about geography, continents, regions, geology, water and climate...