Sand sheet
Encyclopedia
Sand sheets are flat, gently undulating plots of sand
surfaced by grains that may be too large for saltation
. They form approximately 40 percent of aeolian depositional surfaces.
Sand sheets exist where grain size is too large, or wind velocities too low, for dune
s to form.
Sand
Sand is a naturally occurring granular material composed of finely divided rock and mineral particles.The composition of sand is highly variable, depending on the local rock sources and conditions, but the most common constituent of sand in inland continental settings and non-tropical coastal...
surfaced by grains that may be too large for saltation
Saltation (geology)
In geology, saltation is a specific type of particle transport by fluids such as wind or water. It occurs when loose material is removed from a bed and carried by the fluid, before being transported back to the surface...
. They form approximately 40 percent of aeolian depositional surfaces.
Sand sheets exist where grain size is too large, or wind velocities too low, for dune
Dune
In physical geography, a dune is a hill of sand built by wind. Dunes occur in different forms and sizes, formed by interaction with the wind. Most kinds of dunes are longer on the windward side where the sand is pushed up the dune and have a shorter "slip face" in the lee of the wind...
s to form.