Astrand plain orstrandplain is a broad belt of sand along ashoreline with a surface exhibiting well-defined parallel or semi-parallel sand ridges separated by shallowswales. A strand plain differs from abarrier island in that it lacks either thelagoons ortidal marshes that separate a barrier island from theshoreline to which the strand plain is directly attached. Also, thetidal channels and inlets which cut through barrier islands are absent. Strand plains typically are created by the redistribution by waves and longshore currents of coarsesediment on either side of a river mouth. Thus, they are part of one type of wave-dominateddelta.[1][2]
Examples of strand plains:
- WesternLouisiana
- EasternTexas
- West coast ofNamibia
- South-east and south-west coasts ofAustralia, and in theGulf of Carpentaria
- Letea and Caraorman,Danube Delta,Romania
- Kustvlakte,Suriname
- Cayo Costa, Florida
See also
editReferences
edit- ^McCubbin, D.G., 1982,Barrier-island and strand-plain facies. in P.A. Scholle, and D. Spearing, eds., pp. 247–279., Sandstone Depositional Environments: Memoir no. 31, Tulsa, Oklahoma, American Association of Petroleum Geologists, Tulsa, Oklahoma.
- ^Fitzgerald, D.M., W.J. Cleary, I.V. Buynevich, C.J. Hein, A.H.F. Klein, N. Asp, and R. Angulo, 2007,Strandplain Evolution along the Southern Coast of Santa Catarina, Brazil. Journal of Coastal Research. Supplemental issue no. 50, pp. 152-156.
