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The Great Sand Sea is an approximately 72,000 km 2 (28,000 sq mi) sand desert (erg) in the Sahara stretched from western Egypt and eastern Libya in North Africa. Most of the area is covered by sand dunes .
Issaouane Erg, Algeria Linear Dunes, Namib Sand Sea. 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. [1] The word is derived from the Arabic word ʿirq (عرق), meaning "dune field". [2]
The Calanshio Sand Sea is the site of the missing World War II B-24 Liberator Lady Be Good. The wreck was discovered 200 km (120 mi) north of Kufra 15 years after it was reported missing in 1943. The crew bailed out believing they were over the sea, when their plane ran out of fuel, and they became lost.
The Grand Erg Oriental (English: 'Great Eastern Sand Sea') is a large erg or "field of sand dunes" in the Sahara Desert. Situated for the most part in Saharan lowlands of northeast Algeria, the Grand Erg Oriental covers an area some 600 km wide by 200 km north to south. The erg's northeastern edge spills over into neighbouring Tunisia.
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The area of the Rabyanah Sand Sea is in the western part of the Libyan Desert in the Kufra District of the Cyrenaica region. It is named after the oasis town of Rabyanah located towards its eastern end. Together with the Calanshio Sand Sea and the Great Sand Sea, the Rabyanah Sand Sea is part of the greater Libyan Desert. [2]
Marzuq Sand Sea seen from ISS, 2008 (centered at Detailed astronaut photograph, taken from low Earth orbit, showing classic large and small sand masses of the central Sahara where wind is a more powerful land-shaping agent than water.
Sand is a granular material composed of finely divided mineral particles. Sand has various compositions but is defined by its grain size. Sand grains are smaller than gravel and coarser than silt. Sand can also refer to a textural class of soil or soil type; i.e., a soil containing more than 85 percent sand-sized particles by mass. [2]