Hamada

Hammada or Hamadah (Arabic همادة Hammada, died of Hamid / هامد / lifeless, frozen, extinct ') is the name of rock and stone deserts, particularly within one of the largest deserts in the world, the Sahara. Rock and stone deserts are far more common than sand deserts. The Sahara is 70 percent of Hammada.

The Hammadahs are not with sand ( Erg ) or pebbles ( Serir ) filled, but with angular stone fragments that were formed from pluvialzeitlichen levels. The surface of this desert type is rubble or rock materials tightly covered with blocky, angular, which has accumulated as a result of physical weathering and the Auswehung of fine material here. In contrast to the loosely distributed rocks of Hammada the surface formation of the Reg is a composite of different rock shapes and sizes closed layer.

For vehicles and dromedaries Hammadahs are very difficult or impossible to traverse.

Because of the extremely low water reserve in the rocky ground are Hammadahs to the hostile desert areas. The vegetation is sparse desert under. Since the bedrock is impermeable to water, the water outflow rates in rocky or stony deserts are particularly high, so the passage of himself pulling through Hammadahs wadis is particularly dangerous.

The largest Hammada is the Hammada du Draa in Western Sahara; the Hammada al -Hamra in southern Libya and part of the Syrian Desert to the east of the Hauran region are Hammadahs.