Lag deposit

A lag deposit is the deposition of material winnowed by physical action. Aeolian processes, fluvial processes, and tidal processes can remove the finer portion of a sedimentary deposit leaving the coarser material behind.

Lag deposit in Soria, Spain

Lag deposits are found in processes such as central island formation in streams and rivers.[1] One theory of desert pavement formation is that they are an aeolian lag deposit. Armored beaches and inlets can be composed in part by lag deposits of shells or cobbles created when tidal forces strip away the finer sand and silt.[2]

References

Miller, Luna B. Leopold, M. Gordon Wolman, John P. (1995). Fluvial processes in geomorphology (Dover ed.). New York: Dover Publications. pp. 285–287. ISBN 0486685888.{{cite book}}: CS1 maint: multiple names: authors list (link)
eds., Richard A. Davis Jr., Robert W. Dalrymple (2011-10-20). Principles of tidal sedimentology. Dordrecht: Springer. p. 307. ISBN 9789400701236. {{cite book}}: |last= has generic name (help)CS1 maint: multiple names: authors list (link)

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[1] Miller, Luna B. Leopold, M. Gordon Wolman, John P. (1995). Fluvial processes in geomorphology (Dover ed.). New York: Dover Publications. pp. 285–287. ISBN 0486685888.{{cite book}}: CS1 maint: multiple names: authors list (link)

[2] s., Richard A. Davis Jr., Robert W. Dalrymple (2011-10-20). Principles of tidal sedimentology. Dordrecht: Springer. p. 307. ISBN 9789400701236. {{cite book}}: |last= has generic name (help)CS1 maint: multiple names: authors list (link)