currentsand
Currentsand is a descriptive term in sedimentology referring to sand that is actively transported and deposited by sustained water or air currents. It typically refers to fine- to medium-grained sand, often dominated by quartz, though mineralogy can vary with the source. The concept covers sands moved by fluvial, tidal, coastal, and aeolian (wind) currents.
Transport and deposition occur when shear stress exerted by the flowing medium exceeds a critical threshold.
Common sedimentary features of currentsand include ripple marks, dune cross-bedding, and planar laminations that reflect the
Environmentally, currentsand occurs in rivers, tidal channels, shorefaces, coastal dunes, and some aeolian dunes where wind
Terminology note: Currentsand is not a universally standardized lithostratigraphic term. In many contexts, it is described