desert pavement

A desert pavement is a desert surface that is covered with closely packed, interlocking angular or rounded rock fragments of pebble and cobble size. Two theories have been proposed for their formation. According to one theory, they form by the gradual removal of the sand, dust and other fine grained material by the wind and intermittent rain. A more recent theory proposes that they form as a consequence of the entrapment and later movement of dust below the coarse fragments. With time, this material gradually accumulates and is also modified by soil-forming processes. Ultimately, a fine-grained desert soil is found immediately below a one or two-clast layer of clasts (the pavement) but above the original substrate in which the soil formed, representing a form of cumulate soil formation. Frequently the stones are polished by the abrasion of wind-borne dust and may even be shaped by the wind, becoming ventifacts. Desert pavement surfaces are often coated with desert varnish. In Australia the desert pavement is called The Gibber.
See more at Wikipedia.org...

A closely packed layer of rock fragments concentrated in a layer along the Earth's surface by the deflation of finer particles.

B: (Biologi) hamparan batu gurun
Built to Babylon by Hikmat Gumilar Visit my Website;