African Archaeological Review

, Volume 32, Issue 4, pp 839–855 | Cite as

Palynology of Holocene Deposits in Excavation 1 at Wonderwerk Cave, Northern Cape (South Africa)

Original Article

Abstract

Wonderwerk Cave, Northern Cape Province (South Africa) is one of few sites in the subcontinent where fossil pollen has been preserved in Holocene cave floor deposits. With the exception of biogenic deposits and stalagmite layers near the cave opening, older material has yielded no pollen. Pollen recorded in previous and new samples from late Pleistocene-Holocene deposits in Excavation 1 at the cave are combined in a calibrated age model based on a selection of published radiocarbon dates. The results confirm patterns observed previously by the late E. M. van Zinderen Bakker, but a new interpretation of the environmental implications and history of the pollen sequence at the site is proposed, viz., dry karroid vegetation in the early Holocene and relatively humid grassy conditions between ca. 5,500 and 4,400 cal yr BP. The results are consistent with those of microfaunal and isotopic studies, and form part of growing proxy evidence for past environmental conditions in the South African interior.

Keywords

Pollen Cave deposits Kalahari Vegetation Climate change 

Résumé

Située dans la province du Cap-du-Nord en Afrique du Sud, la grotte de Wonderwerk est un des rares sites du sous-continent à avoir livré des pollens fossiles dans des sols de cavernes datées de l’Holocène. Le matériel plus ancien ne contient des pollens que dans les dépôts biogènes et les couches des stalagmites près de l’ouverture de la grotte. Les pollens enregistrés dans les échantillons anciens et nouveaux prélevés dans les dépôts de la fin du Pléistocène et de l’Holocène de la grotte (Excavation 1) ont été combinés dans un modèle chronologique calibré basé sur une sélection de dates radiocarbones publiées précédemment. Les résultats confirment les tendances observées par feu E. M. van Zinderen Bakker, mais nous proposons une nouvelle interprétation des implications de la séquence de pollens sur l’environnement et l’histoire de l’Holocène du site, à savoir une végétation « karroid » sèche au début de l’Holocène et un milieu herbeux relativement humide entre 5,500 et 4,400 cal BP environ. En accord avec la microfaune et les analyses isotopiques, ces résultats complètent nos connaissances environnementales du Passé de la région centrale d’Afrique du Sud.

Notes

Acknowledgments

The fieldwork and analyses reported here took place on the basis of an agreement with the McGregor Museum (South Africa) concerning access to these collections for members of the project directed by Liora Horwitz and Michael Chazan, who are thanked for involving us in the team for Wonderwerk Cave research and for continued support and encouragement. Peter Beaumont is thanked for providing samples for study during the previous phase of research at the cave, and Lloyd Rossouw for making available the samples he collected for phytolith analysis. Michaela Ecker helped to collect information in connection with radiocarbon dating by previous researchers, and George Brook adjusted the stalagmite chronology. Fieldwork and artifact export of material relating to this research project were undertaken under the terms of permits issued by SAHRA (South African Heritage Resources Agency) to the McGregor Museum and members of the team. This work is based on the research supported by the National Research Foundation of South Africa. Any opinion, finding, and conclusion or recommendation expressed in this material is that of the authors, and the NRF does not accept any liability in this regard.

Supplementary material

10437_2015_9204_MOESM1_ESM.xlsx (18 kb)
ESM 1 (XLSX 17 kb)

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Department of Plant SciencesUniversity of the Free StateBloemfonteinSouth Africa
  2. 2.Evolutionary Studies InstituteUniversity of the WitwatersrandJohannesburgSouth Africa

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