Hostname: page-component-77f85d65b8-7lfxl Total loading time: 0 Render date: 2026-04-19T23:32:20.622Z Has data issue: false hasContentIssue false

Successfully Dating Rock Art in Southern Africa Using Improved Sampling Methods and New Characterization and Pretreatment Protocols

Published online by Cambridge University Press:  09 September 2016

A Bonneau*
Affiliation:
Laboratoire Lux /Geotop, Earth and Atmospheric Sciences Department, Université du Québec à Montréal, Montreal, Canada Rock Art Research Institute, GAES, University of the Witwatersrand, Johannesburg, South Africa Centre interuniversitaire d'études sur les lettres, les arts et les traditions, Université du Québec à Montréal, Montreal, Canada
R A Staff
Affiliation:
Oxford Radiocarbon Accelerator Unit, University of Oxford, Oxford, United Kingdom
T Higham
Affiliation:
Oxford Radiocarbon Accelerator Unit, University of Oxford, Oxford, United Kingdom
F Brock
Affiliation:
Oxford Radiocarbon Accelerator Unit, University of Oxford, Oxford, United Kingdom Cranfield Forensic Institute, Cranfield University, Defence Academy of the United Kingdom, Shrivenham, United Kingdom
D G Pearce
Affiliation:
Rock Art Research Institute, GAES, University of the Witwatersrand, Johannesburg, South Africa
P J Mitchell
Affiliation:
Rock Art Research Institute, GAES, University of the Witwatersrand, Johannesburg, South Africa School of Archaeology, University of Oxford, St Hugh’s College, Oxford, United Kingdom and GAES, University of the Witwatersrand, South Africa
*
Corresponding author: adelphine.bonneau@gmail.com.

Abstract

Worldwide, dating rock art is difficult to achieve because of the frequent lack of datable material and the difficulty of removing contamination from samples. Our research aimed to select the paints that would be the most likely to be successfully radiocarbon dated and to estimate the quantity of paint needed depending on the nature of the paint and the weathering and alteration products associated with it. To achieve this aim, a two-step sampling strategy, coupled with a multi-instrument characterization (including SEM-EDS, Raman spectroscopy, and FTIR spectroscopy analysis) and a modified acid-base-acid (ABA) pretreatment, was created. In total, 41 samples were dated from 14 sites in three separate regions of southern Africa. These novel protocols ensure that the 14C chronology produced was robust and could also be subsequently applied to different regions with possible variations in paint preparation, geology, weathering conditions, and contaminants.

Information

Type
Chemical Pretreatment Approaches
Copyright
© 2016 by the Arizona Board of Regents on behalf of the University of Arizona 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable