Isotopic and Zooms Analysis of Seventh–Tenth Century AD Ivory from Kwazulu-Natal
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Afr Archaeol Rev DOI 10.1007/s10437-016-9232-0 ORIGINAL ARTICLE Earliest Evidence for the Ivory Trade in Southern Africa: Isotopic and ZooMS Analysis of Seventh–Tenth Century AD Ivory from KwaZulu-Natal Ashley N. Coutu & Gavin Whitelaw & Petrus le Roux & Judith Sealy # The Author(s) 2016. This article is published with open access at Springerlink.com Abstract KwaGandaganda, Ndondondwane and Wosi strontium isotope analysis to explore the origins and were major Early Farming Community settlements in procurement of this ivory, in combination with what is today the KwaZulu-Natal province of South Zooarchaeology by Mass Spectrometry (ZooMS) to Africa. These sites have yielded, among other remains, identify the species of animals from which it was de- abundant evidence of ivory and ivory working dating to rived. All of the ivory studied using ZooMS was ele- the seventh–tenth centuries AD,pre-datingbyapproxi- phant, despite the presence of hippopotamus remains on mately 200 years the better-known ivory artefacts from all three sites. Some ivory was probably obtained from sites in the Limpopo River Valley and surrounding elephant herds that lived close to the sites, in the densely regions. We report the results of carbon, nitrogen and wooded river valleys favoured by both elephants and early farmers. Other material came from savannah en- Time period: Early Iron Age vironments further afield. Ivory found at these three sites Country and region discussed: South Africa, KwaZulu-Natal was drawn from different catchments, implying a degree of landscape/resource partitioning even at this early Electronic supplementary material The online version of this article (doi:10.1007/s10437-016-9232-0) contains supplementary stage. These communities clearly invested substantial material, which is available to authorized users. effort in obtaining ivory from across the region, which : speaks to the importance of this commodity in the econ- A. N. Coutu (*) J. Sealy omy of the time. We suggest that some ivory items were Department of Archaeology, University of Cape Town, Private for local use, but that some may have been intended for Bag X3, Rondebosch 7701, South Africa e-mail: [email protected] more distant markets via Indian Ocean trade. A. N. Coutu Résumé Les sites de KwaGandaganda, Ndondondwane BioArCh, Department of Archaeology, University of York, et Wosi ont été des peuplements majeurs de York YO10 5DD, UK communautés d’agriculteurs précoces dans ce qui est. G. Whitelaw aujourd’hui la province de KwaZulu-Natal, en Afrique KwaZulu-Natal Museum, Private Bag 9070, du Sud. Ces sites ont donné, parmi d’autres vestiges, des Pietermaritzburg 3200, South Africa preuves abondantes d’ivoire et d’ivoire travaillé datant G. Whitelaw des siècles VIIe à Xe de notre ère, ce qui précéde, par School of Social Sciences, University of KwaZulu-Natal, Private environ 200 ans, des artéfacts d’ivoire mieux connus Bag X54001, Durban 4000, South Africa provenants de sites de la vallée du Limpopo et des régions environnantes. Ici nous rapportons des résultats P. le Roux ’ ’ ’ Department of Geological Sciences, University of Cape Town, d analyses d isotopes de carbone, d azote et de stron- Private Bag X3, Rondebosch 7701, South Africa tium, en combinaison avec de la zooarchéologie par Afr Archaeol Rev spectrométrie de masse (ZooMS) pour identifier les beads, glazed ceramics and other luxury goods. How espèces d’animaux à partir de lesquelles l’ivoire and where did trans-oceanic trade to and from southern archéologique a dérivé, et aussi pour explorer ses Africa first begin? Was ivory from KwaZulu-Natal origines et ses marchés. Tout l’ivoire étudié en utilisant linked to such a network, several centuries earlier? de la ZooMS a dérivé d’éléphant, malgré la présence de Here, we try to gain a better understanding of patterns vestiges d’hippopotame sur les trois sites. Une partie de of ivory procurement by analysing the stable carbon cet ivoire a probablement été obtenu à partir des (13C/12C) and nitrogen (15N/14N) isotope compo troupeaux d’éléphants qui vivaient près des sites dans sition of archaeological ivory from the sites of les vallées densément boisées qui étaient les favoris des KwaGandaganda, Ndondondwane and Wosi, together éléphants aussi bien que ceux des agriculteurs précoces. with strontium isotopes (87Sr/86Sr). Carbon and nitrogen D’autre matériel est. provenu de milieux de savane plus isotopes reflect the diets the elephants consumed, éloignés. L’ivoire trouvé aux trois sites est., donc, informing us about the habitats in which they lived and provenu de différents bassins versants, ce qui implique thus the likely catchment of this material. Strontium un certain degré de partitionnement de la paysage et des isotopes reflect the geological substrates on which the ressources, même à ce stade précoce. Ces communautés animals lived. Did the ivory derive from local elephant ont clairement investi des efforts considérables populations, or was it sourced from further afield, pre- dans l’obtention de l’ivoire de toute la région, ce sumably in response to greater demand? Did Early Iron qui témoigne l’importance de cette denrée dans Age communities use ivory from hippopotamus (Hippo- l’économie de cette époque. Nous suggérons que cer- potamus amphibius) and/or warthog (Phacochoerus tains articles manufacturés de l’ivoire étaient proba- africanus), as well as elephant (Loxodonta africana)? blement à l’usage local, mais que d’autres peuvent avoir Zooarchaeology by Mass Spectrometry (ZooMS) enables été destinés à des marchés plus éloignés via le commerce us to identify even very small fragments of ivory to de l’océan Indien. species. Here, we present the first such analyses in south- ern African archaeology. Keywords Elephant . Carbon . Nitrogen . Strontium . Early Farming Community. Early Iron Age Early Farmers in KwaZulu-Natal Introduction The first farmers arrived in KwaZulu-Natal c. AD 400 as part of an expansion southwards from East Africa In this paper, we report on the earliest and most south- through the eastern coastal regions of the subcontinent erly evidence for ivory trade in precolonial Africa. The (Huffman 2007, pp. 331–359; Phillipson 1977;Russell sites of KwaGandaganda, Ndondondwane and Wosi in et al. 2014). Links with East Africa are attested by the South African province of KwaZulu-Natal (Fig. 1) remarkable similarities between the earliest South Afri- have yielded large quantities of waste chips from ivory can ceramics and Kwale ware from Kenya and Tanzania working (Fig. 2) and a number of (mostly fragmentary) (Huffman 2007, p. 122; Maggs 1980). These commu- ivory artefacts (Figs. 3 and 4). This evidence dates from nities brought with them domesticated cattle and small the Msuluzi and Ndondondwane phases of the Early stock, as well as crops such as sorghum and millet. Iron Age sequence, c. seventh–tenth centuries AD.Ivory These are tropical grains adapted to summer rainfall con- seems surprisingly abundant, so an intriguing question ditions, so farming communities settled in the northern and is the destination of this material. Overlapping with the eastern parts of South Africa, where it is possible to grow later part of this time period, we see similar evidence of these crops without irrigation. These groups also brought ivory working at the site of Schroda (tenth–eleventh knowledge of iron smelting and iron working and were the centuries AD) further to the north in the Limpopo River first societies in South Africa to live in settled villages. Valley, and thereafter at K2, close to Mapungubwe Hill The chronological sequence of early farming com- (Hanisch 1980, 1981;Raath2014; Voigt 1983). The munities in KwaZulu-Natal is based on the identifica- Limpopo River Valley is well known to have been part tion of sequential ceramic assemblages, tightly anchored of a trans-Indian Ocean trade network, exporting local in a series of radiocarbon dates. The earliest phase is products that likely included ivory in exchange for glass called Mzonjani (AD 400–600), followed by Msuluzi Afr Archaeol Rev Fig. 1 Upper map shows location of wildlife reserves (black dots) with modern elephant populations that yielded the published ivory isotope data referenced in Fig. 10. White dots indicate locations of archaeological sites in KwaZulu- Natal (KwaGandaganda, Wosi and Ndondondwane—the latter two incorporated into one white dot at this scale). Base map of vegetation cover from GlobCover © European Space Agency 2010 and UCLouvain (GlobCover 2008). Lower map is shaded by vegetation bioregions according to Mucina and Rutherford (2006) with white dots indicating loca- tions of archaeological sites men- tioned in the text (Kwa KwaGandaganda, Wos Wosi, Ndo Ndondondwane, Msu Msuluzi Confluence, Mag Magogo, Mhl Mhlopeni). Dark shading to the west of the sites represents sub- escarpment grassland (dark green in online version), lighter shading where the sites are located repre- sents sub-escarpment savanna, shading northeast of the sites where Ulundi is located repre- sents lowveld savanna (blue in online version) and shading where Durban is located repre- sents the Indian Ocean coastal belt (brown in online version) (650–780), Ndondondwane (780–910) and Ntshekane variables such as biomass productivity (de Boer et al. (910–1030), each named for the site at which it was first 2013). In KwaZulu-Natal, high-resolution diatom re- identified (Whitelaw 2013). cords from Lake Sibaya (Fig. 1) indicate that conditions The few Mzonjani phase sites are found near the between AD 750 and 1000 were generally wetter than coast. From the Msuluzi phase onwards, settlements today, with a marked spike in rainfall between AD 790 were located mainly within river valleys which provided and 830 (Stager et al. 2013). Vegetation in the deeply deep, fertile soils for agriculture and ready access to incised river valleys occupied by Early Farming Com- water. These habitats would also have been prime ele- munities was denser than it is currently.