Environmental change during the Pleistocene and Holocene: Estuaries and lagoons of southern Africa

Ander De Lecea, Andrew N. Green, Andrew Cooper

Research output: Chapter in Book/Report/Conference proceedingChapter

3 Citations (Scopus)

Abstract

The South African coast contains abundant estuaries and lagoons, most of which originated as river valleys incised during Quaternary sea-level fall and subsequently drowned and/or infilled during rising interglacial sea levels. This chapter discusses these changes and highlights the geomorphological and sedimentological evolution of several southern African estuaries during the Pleistocene to present. The development, infilling and positioning of incised valley systems is mainly controlled by sea-level variation as well as fluvial and marine sediment supply. Most contemporary estuaries in southern Africa show dramatic responses to shorter term sea-level fluctuations and sediment supply during the Holocene. Barring anthropogenic interference, the dynamic behaviour of estuaries, dictated by their transient position and geomorphic character within an incised valley, is considered to fluctuate on centennial to millennial timescales.
LanguageEnglish
Title of host publicationQuaternary Environmental Change in Southern Africa: Physical and Human Dimensions
PublisherCambridge University Press
Pages219-233
ISBN (Print)9781316572900
Publication statusPublished - Jun 2016

Fingerprint

incised valley
lagoon
environmental change
estuary
Holocene
sea level
Pleistocene
interglacial
alluvial deposit
positioning
marine sediment
timescale
Southern Africa
coast
river
sediment

Keywords

  • Estuary
  • lagoon
  • sea level

Cite this

De Lecea, A., Green, A. N., & Cooper, A. (2016). Environmental change during the Pleistocene and Holocene: Estuaries and lagoons of southern Africa. In Quaternary Environmental Change in Southern Africa: Physical and Human Dimensions (pp. 219-233). Cambridge University Press.
De Lecea, Ander ; Green, Andrew N. ; Cooper, Andrew. / Environmental change during the Pleistocene and Holocene: Estuaries and lagoons of southern Africa. Quaternary Environmental Change in Southern Africa: Physical and Human Dimensions. Cambridge University Press, 2016. pp. 219-233
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De Lecea, A, Green, AN & Cooper, A 2016, Environmental change during the Pleistocene and Holocene: Estuaries and lagoons of southern Africa. in Quaternary Environmental Change in Southern Africa: Physical and Human Dimensions. Cambridge University Press, pp. 219-233.

Environmental change during the Pleistocene and Holocene: Estuaries and lagoons of southern Africa. / De Lecea, Ander; Green, Andrew N.; Cooper, Andrew.

Quaternary Environmental Change in Southern Africa: Physical and Human Dimensions. Cambridge University Press, 2016. p. 219-233.

Research output: Chapter in Book/Report/Conference proceedingChapter

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De Lecea A, Green AN, Cooper A. Environmental change during the Pleistocene and Holocene: Estuaries and lagoons of southern Africa. In Quaternary Environmental Change in Southern Africa: Physical and Human Dimensions. Cambridge University Press. 2016. p. 219-233