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Recent Archaeological Research and Dates from West Africa
Published online by Cambridge University Press: 22 January 2009
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This article reports over 250 new radiocarbon dates relevant to recent archaeological research in West Africa. Thanks to the continuing trend towards series of dates from either single sites or groups of related sites, some major blanks on the archaeological map of West Africa have been replaced by well-dated regional sequences. An example is the Malian Sahara, where palaeoenvironmental and archaeological investigations at a large number of sites have clarified the relationship between Holocene climatic change and Late Stone Age occupation. Other areas that were largely archaeological unknowns until the research reported in this article was undertaken include the middle Senegal valley, the Inland Niger Delta, and the Bassar region in Togo. Other research included here reinterprets previously studied, ‘classic’ Late Stone Age sequences, such as Adrar Bous, Kintampo and Tichitt. There are also new dates and details for early copper in Niger and Mauritania which prompt a reconsideration of the true nature of this proposed ‘Copper Age’. Of particular significance to general reconstructions of West African prehistory is the documentation of regional and long-distance trade accompanying the emergence of complex societies along the Middle Senegal and Middle Niger in the first millennium A.D.
The article begins with a brief commentary on calibration, in view of the recent publication of high-precision calibration curves. Several prevalent misconceptions of what calibration is and what it ought to do are addressed. We suggest that archaeologists and historians should routinely make reference to calibration in order to avoid misinterpreting radiocarbon results.
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References
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137 Information kindly provided in advance of publication by B. Agbaje-Williams.
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140 Ibid., 515.
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142 S-2372, Beta-7855, SFU-275, 392, Alpha-563, 3-CX.
143 Kense, F., ‘Daboya, A Gonja Frontier’ (unpub. Ph.D. thesis, Calgary, 1981), 280, 297.Google Scholar We are grateful to Frank Kense for sending us a copy of his thesis.
144 The last ten dates listed in the Appendix are relevant to this period. The most recent occupation encountered yielded iron cans and a 1919 West African penny. Kense, F., ‘1983 field report on Daboya’, Nyame Akuma, xxiii (1983), 10.Google Scholar
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149 The same caveats apply to previously reported dates for nearby sites in Ghana, such as Ladoku and Ayawaso: Sutton, , ‘Archaeology in West Africa’, 308.Google Scholar A modern date on shell from basal levels of the latter site (clearly datable to the seventeenth century by imports, tobacco pipes and historical documents) further illustrates the point.
150 Nzewunwa, N., A Sourcebookfor Nigerian Archaeology, Nigerian National Commission for Museums and Monuments (1983), 107–108.Google Scholar Two nineteenth century dates have previously been reported from Ogoloma: Posnansky, and McIntosh, , ‘New Radiocarbon dates’, 190.Google Scholar
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161 We are grateful to Jean Polet for communicating this date to us.
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164 We thank Chris de Corse for providing details in advance of publication.
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