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An Improved Pretreatment Protocol for Radiocarbon Dating Black Pigments in San Rock Art

Published online by Cambridge University Press:  18 July 2016

A Bonneau ,
F Brock ,
T Higham ,
D G Pearce  and
A M Pollard
A Bonneau*
Affiliation:
Université Michel de Montaigne Bordeaux III, Domaine Universitaire, 33600 Pessac, France. Permanent address: Archaeology laboratory, Laval University, 3 rue de la Vieille-Université, Quebec G1R 3T5, Canada. Research Laboratory for Archaeology and the History of Art, Dyson Perrins Building, South Parks Road, Oxford OX1 3QY, United Kingdom.
F Brock
Affiliation:
Research Laboratory for Archaeology and the History of Art, Dyson Perrins Building, South Parks Road, Oxford OX1 3QY, United Kingdom.
T Higham
Affiliation:
Research Laboratory for Archaeology and the History of Art, Dyson Perrins Building, South Parks Road, Oxford OX1 3QY, United Kingdom.
D G Pearce
Affiliation:
Rock Art Research Institute, GAES, University of the Witwatersrand, Private Bag 3, WITS 2050, South Africa.
A M Pollard
Affiliation:
Research Laboratory for Archaeology and the History of Art, Dyson Perrins Building, South Parks Road, Oxford OX1 3QY, United Kingdom.
*
Corresponding author. Email: [email protected].
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Abstract

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The dating of South African rock art using radiocarbon is a considerable challenge and only 1 direct date has so far been obtained, on black pigments from Sonia's Cave Upper, Boontjieskloof. The main problem with direct dating these paintings is the presence of calcium oxalates behind, on, and within the pigment layers. Calcium oxalates are formed through lichen and bacterial action on the rock face. These reactions can sometimes take place over long periods and can incorporate carbon of a younger age into the pigments. This study aims to date black pigments from a rockshelter, RSA TYN2 (Eastern Cape, South Africa), by removing the calcium oxalate contamination. Two different protocols were tried: density separation and acidification. The latter successfully removed calcium oxalates and was therefore applied to 3 black pigment samples from the rockshelter. After acid pretreatment, accelerator mass spectrometry (AMS) dating was undertaken on the remaining residues. Three results were obtained (2072 ± 28 BP, 2100 ± 40 BP, and 2083 ± 32 BP), which constitute the oldest results so far obtained for direct dates on South African rock art. The most likely calibrated date range for the painting at this site is between 2120 and 1890 cal BP. The ages are in close agreement with each other and this consistency suggests that our preparation protocol has successfully removed the majority of the carbon contaminants.

Type
Articles
Information
Radiocarbon , Volume 53 , Issue 3 , 2011 , pp. 419 - 428
Copyright
Copyright © 2011 The Arizona Board of Regents on behalf of the University of Arizona 

References

Blundell, G. 2004. Nqabayo's Nomansland: San Rock Art and the Somatic Past. Uppsala: Uppsala University Press.Google Scholar
Bonneau, A, Pearce, DG, Pollard, AM. 2011. A multitechnique characterization and provenance study of the pigments used in San rock art, South Africa. Journal of Archaeological Science, in press.CrossRefGoogle Scholar
Brock, F, Higham, T, Ditchfield, P, Bronk Ramsey, C. 2010. Current pretreatment methods for AMS radiocarbon dating at the Oxford Radiocarbon Accelerator Unit (ORAU). Radiocarbon 52(1):103–12.CrossRefGoogle Scholar
Bronk Ramsey, C. 2009. Bayesian analysis of radiocarbon dates. Radiocarbon 51(1):337–60.Google Scholar
Denninger, E. 1971. The use of paper chromatography to determine the age of albuminous binders and its applications to rock paintings. South African Journal of Science Supplement to the Special Issue 2:80–4.Google Scholar
Douka, K, Hedges, REM, Higham, TFG. 2010. Improved AMS 14C dating of shell carbonates using high-precision X-ray diffraction (XRD) and a novel density separation protocol (CarDS). Radiocarbon 52(2):735–51.Google Scholar
Edwards, HGM, Jorge Villar, SE, Eremin, KA. 2004. Raman spectroscopic analysis of pigments from dynastic Egyptian funerary artefacts. Journal of Raman Spectroscopy 35(8–9):786–95.Google Scholar
Garate, D, Laval, E, Menu, M. 2004. Etude de la matière colorante de la grotte d'Arenaza (Galdames, Basque Country, Spain). L'Anthropologie 108(2):251–89.CrossRefGoogle Scholar
Jeffery, PG. 1975. Chemical Methods of Rock Analysis. Exeter: Pergamon Press.Google Scholar
Jerardino, A, Swanepoel, N. 1999. Painted slabs from Steenbokfontein Cave: the oldest known parietal art in Southern Africa. Current Anthropology 40(4):542–7.Google Scholar
Lewis-Williams, JD, Pearce, DG. 2004. San Spirituality: Roots, Expression, and Social Consequences. Walnut Creek: AltaMira.Google Scholar
Livingston, A, Robinson, E, Armitage, RA. 2009. Characterizing the binders in rock paintings by THM-GCMS: La Casa de Las Golondrinas, Guatemala, a cautionary tale for radiocarbon dating. International Journal of Mass Spectrometry 284(1–3):142–51.Google Scholar
Mazel, AD. 2009a. Unsettled times: shaded polychrome paintings and hunter-gatherer history in the southeastern mountains of southern Africa. Southern African Humanities 21:85–115.Google Scholar
Mazel, AD. 2009b. Images in time: advances in the dating of Maloti-Drakensberg rock art since the 1970s. In: Mitchell, P, Smith, B, editors. The Eland's People. New Perspectives in the Rock Art of the Maloti-Drakensberg Bushmen: Essays in Memory of Patricia Vinnicombe. Johannesburg: Wits University Press. p 81–97.Google Scholar
Mazel, AD, Watchman, AL. 1997. Accelerator radiocarbon dating of Natal Drakensberg paintings: results and implication. Antiquity 71(272):445–9.Google Scholar
Mazel, AD, Watchman, AL. 2003. Dating rock paintings in the uKhahlamba-Drakensberg and the Biggarsberg, KwaZulu-Natal, South Africa. Southern African Humanities 15:59–73.Google Scholar
McCormac, FG, Hogg, AG, Blackwell, PG, Buck, CE, Higham, TFG, Reimer, PJ. 2004. SHCal04 Southern Hemisphere calibration, 0–11.0 cal kyr BP. Radiocarbon 46(3):1087–92.Google Scholar
Menu, M. 2009. L'analyse de l'art préhistorique. L'Anthropologie 113(3–4):547–58.Google Scholar
Opperman, H. 1987. The Later Stone Age of the Drakensberg Range and its Foothills. Cambridge Monographs in African Archaeology 19. Oxford: BAR International Series 339.Google Scholar
Opperman, H. 1999. A 300 year-old living floor in Strathalan Cave A, Maclear District, Eastern Cape. Southern African Field Archaeology 8:76–80.Google Scholar
Pager, H. 1971. Ndedema: a Documentation of the Rock Paintings of the Ndedema Gorge. Graz: Akademische Druck.Google Scholar
Pearce, DG. 2010a. The Harris matrix technique in the construction of relative chronologies of rock paintings in South Africa. South African Archaeological Bulletin 65(191):148–53.Google Scholar
Pearce, D. 2010b. Conservation and management of collapsing rock paintings: three sites in Maclear District, Eastern Cape Province, South Africa. South African Archaeological Bulletin 65(191):96–103.Google Scholar
Russ, J, Hyman, M, Shafer, HJ, Rowe, MW. 1991. 14C dating of ancient rock art: a new application of plasma chemistry. Plasma Chemistry and Plasma Processing 11(4):515–27.Google Scholar
Russell, T. 2000. The application of the Harris Matrix to San rock art at Main Caves North, KwaZulu-Natal. South African Archaeological Bulletin 55:60–70.Google Scholar
Stuart, B. 2007. Analytical Techniques in Materials Conservation. Chichester: Wiley.Google Scholar
Swart, J. 2004. Rock art sequences in uKhahlamba-Drakensberg Park, South Africa. Southern African Humanities 16:13–35.Google Scholar
van der Merwe, NJ, Sealy, J, Yates, R. 1987. First accelerator carbon-14 date for pigment from a rock painting. South African Journal of Science 83(1):56–7.Google Scholar
Vinnicombe, P. 1976. People of the Eland: Rock Paintings of the Drakensberg Bushmen as a Reflection of their Life and Thought. Pietermaritzburg: University of Natal Press.Google Scholar
Watchman, AL. 1990. A summary of occurrence of oxalate-rich crusts in Australia. Rock Art Research 7(1):44–50.Google Scholar
Wendt, WE. 1976. ‘Art mobilier’ from the Apollo 11 cave, South West Africa: Africa's oldest dated works of art. South African Archaeological Bulletin 31:5–11.Google Scholar