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A sand wave is a lower regime
A sand wave is a lower regime sedimentary structure
Sedimentary structures include all kinds of features in sediments and sedimentary rocks, formed at the time of deposition.
Sediments and sedimentary rocks are characterized by bedding, which occurs when layers of sediment, with different particl ...
that forms across from tidal currents
Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon (and to a much lesser extent, the Sun) and are also caused by the Earth and Moon orbiting one another.
Tide tables ca ...
.
Formation
Sand waves are formed through the action of the wind or water (through waves or tidal currents). Sand waves form also underwater.See also
*Sand dune
A dune is a landform composed of wind- or water-driven sand. It typically takes the form of a mound, ridge, or hill. An area with dunes is called a dune system or a dune complex. A large dune complex is called a dune field, while broad, f ...
* Ripple marks
In geology, ripple marks are sedimentary structures (i.e., bedforms of the lower flow regime) and indicate agitation by water ( current or waves) or wind.
Defining ripple cross-laminae and asymmetric ripples
* ''Current ripple marks'', ''u ...
References
External links
Sedimentology Patterned grounds Sedimentary structures {{geology-stub