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date: 28 January 2020

Summary and Keywords

Rock art is an archaeological resource with the potential to reconstruct aspects of the ideologies of prehistoric societies. Research methods are distinguished here from theoretical, interpretive frameworks. The methods discussed here concern the documentation of rock art, methods of working with the temporal dimensions of rock art (such as developing relative chronologies and dating), and the characterization of pigments. Nonetheless, the choice of research methods depends on an explicitly formulated, theoretically informed research question. Research aims will also determine the scope and scale of the documentation and chronological methods employed.

Fieldwork is a major and initial component of documentation and may involve surveying for rock-art sites. Researchers should experience rock art first hand. Digital mapping and imaging techniques are used routinely, but field tracings continue to be an important means of recording and interpreting the art. Computational photography includes enhancement software such as DStretch and other techniques that enable researchers to see details that would otherwise be invisible.

Temporality is a fundamental attribute of rock art, and the biggest challenge in this regard is to relate the chronological sequences on the rock face to other archaeological and environmental data and thus contextualize the rock art. Relative chronologies provide information about the order of image-making episodes at a site or in a particular region. Age determinations may be arrived at using correlative methods in which the art is dated by means of independently available age ranges. Accelerator Mass Spectrometry (AMS) radiocarbon dating is commonly used to date organic paint samples. Engravings are difficult to date; age ranges obtained from cation-ratio (CR) and varnish microlamination (VML) are regarded as approximations. Pigment analysis is used to characterize the inorganic components of paint and to detect the presence of organic components. Research methods are multidisciplinary and thus require a coordinated, unified approach in order to achieve the research aims.

Keywords: African rock art, archaeology, dating, digital image enhancement, research methods, rock engravings, rock paintings

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