Book contents
- Quaternary Environmental Change in Southern AfricaPhysical and Human Dimensions
- Quaternary Environmental Change in Southern Africa
- Copyright page
- Contents
- Contributors
- 1 The context of Quaternary environmental change in southern Africa
- 2 A brief geological history of southern Africa
- 3 A continental-scale perspective on landscape evolution in southern Africa during the Cenozoic
- 4 Hominin origins and evolution during the Neogene
- 5 Hominin evolution in Africa during the Quaternary
- 6 Quaternary environmental change on the southern African coastal plain
- 7 Dating the southern African landscape
- 8 Glacial and periglacial geomorphology
- 9 Colluvial deposits and slope instability
- 10 Desert dune environments
- 11 Changes in fluvial systems during the Quaternary
- 12 Wetlands in southern Africa
- 13 Sandy coasts
- 14 Environmental change during the Pleistocene and Holocene: Estuaries and lagoons of southern Africa
- 15 Soils and duricrusts
- 16 Karstic systems
- 17 Terrestrial ecosystem changes in the late Quaternary
- 18 Faunal evidence for mid- and late Quaternary environmental change in southern Africa
- 19 Pollen, charcoal and plant macrofossil evidence of Neogene and Quaternary environments in southern Africa
- 20 Minerogenic microfossil records of Quaternary environmental change in southern Africa
- 21 Development of the archaeological record in southern Africa during the Earlier Stone Age
- 22 Development of the archaeological record during the Middle Stone Age of South Africa
- 23 Later Stone Age hunter-gatherers and herders
- 24 Southernmost Africans, archaeology and the environment during the Holocene
- 25 Landscape–climate–human relations in the Quaternary of southern Africa
- Index
- References
6 - Quaternary environmental change on the southern African coastal plain
Published online by Cambridge University Press: 05 June 2016
Book contents
- Quaternary Environmental Change in Southern AfricaPhysical and Human Dimensions
- Quaternary Environmental Change in Southern Africa
- Copyright page
- Contents
- Contributors
- 1 The context of Quaternary environmental change in southern Africa
- 2 A brief geological history of southern Africa
- 3 A continental-scale perspective on landscape evolution in southern Africa during the Cenozoic
- 4 Hominin origins and evolution during the Neogene
- 5 Hominin evolution in Africa during the Quaternary
- 6 Quaternary environmental change on the southern African coastal plain
- 7 Dating the southern African landscape
- 8 Glacial and periglacial geomorphology
- 9 Colluvial deposits and slope instability
- 10 Desert dune environments
- 11 Changes in fluvial systems during the Quaternary
- 12 Wetlands in southern Africa
- 13 Sandy coasts
- 14 Environmental change during the Pleistocene and Holocene: Estuaries and lagoons of southern Africa
- 15 Soils and duricrusts
- 16 Karstic systems
- 17 Terrestrial ecosystem changes in the late Quaternary
- 18 Faunal evidence for mid- and late Quaternary environmental change in southern Africa
- 19 Pollen, charcoal and plant macrofossil evidence of Neogene and Quaternary environments in southern Africa
- 20 Minerogenic microfossil records of Quaternary environmental change in southern Africa
- 21 Development of the archaeological record in southern Africa during the Earlier Stone Age
- 22 Development of the archaeological record during the Middle Stone Age of South Africa
- 23 Later Stone Age hunter-gatherers and herders
- 24 Southernmost Africans, archaeology and the environment during the Holocene
- 25 Landscape–climate–human relations in the Quaternary of southern Africa
- Index
- References
Summary
Abstract
The low-lying South African coastal plain, bounded by the sea and by high-relief terrain of the continental interior, forms an important habitat for many animals, including humans. The present-day coastal plain is generally narrow, but expanded in width when sea level was lowered by between 75 and 130 m during Quaternary glacial periods. During these periods there was moderate expansion of the western and eastern coastal plains, whereas the southern coastal plain expanded by up to a factor of five onto the adjacent Agulhas Bank to form a continuous coastal plain. The offshore marine geology in this region allows for extrapolation of modern vegetation biomes onto comparable substrates exposed on the glacial-age coastal plain. With the exception of cemented dunes (aeolianite), Quaternary deposits on the exposed shelf are generally highly reworked and condensed. However, meandering rivers, wetlands and lakes on the low-lying southern coastal plain can be inferred, and may have provided a refuge from the dry interior during glacial periods. The southern coastal plain possibly served as a geographical region of origin by periodically isolating populations over glacial to interglacial cycles, promoting human evolution.
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- Quaternary Environmental Change in Southern AfricaPhysical and Human Dimensions, pp. 88 - 98Publisher: Cambridge University PressPrint publication year: 2016
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