Middle and Late Pleistocene paleoscape modeling along the southern coast of South Africa

Erich C. Fisher, Miryam Bar-Matthews, Antonieta Jerardino, Curtis Marean

Research output: Contribution to journalArticle

116 Citations (Scopus)

Abstract

Changing climates, environment, and sea levels during the Middle and Late Pleistocene must have had significant impacts on early modern humans and their behavior. However, many important archaeological sites occur along the current coastline of South Africa where the gradual slope of the offshore Agulhas Bank meant that small changes to sea level height potentially caused significant shifts in coastline position. The geographic context of these currently coastal sites would have been transformed by sea level shifts from coastal to near-coastal to fully terrestrial. To understand human adaptations as reflected in the archaeological deposits of these now-coastal sites we need to accurately model coastline position through time. Here, we introduce a Paleoscape model as a conceptual tool to ground the records for human behavioral evolution within a dynamic model of paleoenvironmental changes. Using integrated bathymetric datasets, GIS, and a relative sea level curve we estimate the position of the coastline at 1.5 ka increments over the last ~420,000 years. We compare these model predictions to strontium isotope ratios from speleothems as an independent test and then compare the coastline predictions to evidence for shellfish exploitation through time. Both tests suggest our model is relatively robust. We then widen our paleoscape model to most of the Cape region and compare the predictions of this broadened model to evidence from Blombos cave.

Original languageEnglish (US)
Pages (from-to)1382-1398
Number of pages17
JournalQuaternary Science Reviews
Volume29
Issue number11-12
DOIs
StatePublished - Jun 2010

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South Africa
Pleistocene
coasts
sea level
coast
modeling
prediction
strontium
shellfish
speleothem
strontium isotope
caves
dynamic models
Africa
Middle Pleistocene
Modeling
Late Pleistocene
Coast
isotopes
evidence

ASJC Scopus subject areas

  • Geology
  • Global and Planetary Change
  • Ecology, Evolution, Behavior and Systematics

Cite this

Middle and Late Pleistocene paleoscape modeling along the southern coast of South Africa. / Fisher, Erich C.; Bar-Matthews, Miryam; Jerardino, Antonieta; Marean, Curtis.

In: Quaternary Science Reviews, Vol. 29, No. 11-12, 06.2010, p. 1382-1398.

Research output: Contribution to journalArticle

Fisher, Erich C. ; Bar-Matthews, Miryam ; Jerardino, Antonieta ; Marean, Curtis. / Middle and Late Pleistocene paleoscape modeling along the southern coast of South Africa. In: Quaternary Science Reviews. 2010 ; Vol. 29, No. 11-12. pp. 1382-1398.
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