Iguidi

Iguidi

 

a sandy desert (erg) in the Western Sahara of Algeria and Mauritania, between the Dra Plateau in the northwest and the El Eglab Plateau in the southeast. The dunes lie on a crystalline foundation and stretch 400 km from east-northeast to west-southwest in a strip 50–100 km wide. They form narrow ridges held in place by vegetation. Groundwater is especially abundant along the northeastern margin of the Iguidi. The region is used for pasture in the summer.

References in periodicals archive ?
Such 'blooms' occur when deep currents bring nutrients up to sunlit surface waters, fueling the growth of these tiny plants; Yukon Delta (3) features the numerous lakes, sloughs and ponds that make up one of the world's largest deltas, in southwest Alaska; Algerian Abstract (4) shows the shifting sea of sand known as Erg Iguidi, which extends from Algeria into Mauritania, whose dunes are often more than 500 metres wide and high.