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

4 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.
Original 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

Keywords

  • Estuary
  • lagoon
  • sea level

Fingerprint Dive into the research topics of 'Environmental change during the Pleistocene and Holocene: Estuaries and lagoons of southern Africa'. Together they form a unique fingerprint.

Cite this