SEDIMENTARY MOUTH SYSTEMS

V. N. Korotayev

doi:10.15356/0435-4281-2012-4-12-21

SEDIMENTARY MOUTH SYSTEMS

V. N. Korotayev

https://doi.org/10.15356/0435-4281-2012-4-12-21

Abstract

The sedimentary models of principal morphogenetic types of the mouth systems – bay-head, lagoon-head and protruding deltas were developed on the basis of river deltas’ geological features analysis. Each model possesses an original logic of lithodynamic processes: 1) the lagoon-deltaic systems are natural traps for river load; 2) the estuarine-deltaic systems are characterized by poor accumulation of river load and absence of the subaerial deltas; river load is carried out from estuaries and accumulated on open offshore as huge submarine cones (mouth bars); 3) the liman-deltaic systems are characterized by accumulation of about 50% of river load in subaerial deltas; the transit part of river load is carried out by channel flows beyond avandelta; 4) the deltaic systems on open coastland accumulate about 85% of river load; their transit part contributes to the formation of barrier bars.

Keywords

river mouth systems, lagoon, delta, estuarine, liman, barrier bars

About the Author

V. N. Korotayev

Moscow State University, Moscow
Russian Federation

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