Innovation,diffusion, and culture contact: The holocene archaeology of Ghana

Stressing recent research, this review of Ghana archaeology highlights what we know of the advent of sedentism, agriculture, iron technology, and urbanism in Ghana and examines how certain patterns in Ghanaian prehistory depart from the expectations of the progressive evolutionary model that has framed our understanding of world prehistory. It is also argued that the archaeology of Ghana has much to contribute to current debates on the relationship between material culture and identity, and the impact of the Atlantic economy on non-European peoples, and to our understanding of cultural diversity in the past.     

The Holocene Archaeological Sequence of Shum Laka Rock Shelter (Grassfields, Western Cameroon)

Until recently the Grassfields (western Cameroon), cradle of the Bantu languages, were an unknown zone from the archaeological point of view. The excavations of Shum Laka rock shelter by de Maret and his team brought the most complete sequence in West Africa, spanning the Late Pleistocene and the Holocene. After 20 millennia of microlithic tradition (Late Stone Age), a new culture, with macrolithic tools, polishing and pottery (Stone to Metal Age), slowly developed ca. 7000 B.P. onwards. From this early period on, forest hunting was associated with the exploitation of Canarium schweinfurthii. Around 4000 B.P., an industry with waisted axes, blades, and pottery had emerged. With a striking technological continuity, this culture survived throughout the Iron Age. Increasing importance and diversity of trees exploited through the Stone to Metal Age and the Iron Age suggests arboriculture. Regional comparisons show that, between 5000 and 2500 B.P., an original culture developed in the Grassfields and the Cross River basin.Jusqu'à récemment, les Grassfields (Cameroun occidental), berceau des langues bantoues, étaient inconnus d'un point de vue archéologique. Les fouilles de l'abri de Shum Laka par de Maret et son équipe permirent d'établir la plus complète séquence d'Afrique occidentale, embrassant la fin du Pléistocène et l'Holocène. Après 20,000 millénaires de traditions microlithiques (Age de la Pierre Récent), une nouvelle culture, caractérisée par l'apparition d'outils macrolithiques, de polissage et de poterie (Age de la Pierre au Métal), se développe lentement à partir de 7000 B.P. Dès le début, la chasse en forêt est associée à l'exploitation de Canarium schweinfurthii. Vers 4000 B.P. une industrie avec haches à gorge, lames et poterie a émergé. Dans une continuité technologique surprenante, cette culture survivra à l'Age du Fer. L'arboriculture est suggérée par l'importance et la diversification des arbres exploités durant l'Age de la Pierre au Métal et l'Age du Fer. Des comparaisons régionales montrent que, entre 5000 et 2500 B.P., une culture originale se développe dans les Grassfields et le bassin de la Cross River.     

From stone to metal: New perspectives on the later prehistory of West Africa

Earlier views saw West Africa as culturally stagnant through much of the Holocene until stimulus or intervention from north of the Sahara transformed Iron Age societies. Evidence accumulating over the past 15 years suggests that stone-using societies from 10,000 to 3000 B.P. were far more diverse than previously thought. Against an increasingly detailed record of Holocene climate change, the complexity of local adaptation and change is becoming better understood. Although a strong case currently exists for the introduction of copper and iron to West Africa from the north in the mid-first millennium B.C., the subsequent development of metallurgy was strongly innovative in different parts of the subcontinent. Soon after the advent of metals, a dramatic increase in archaeological evidence for social stratification and hierarchical political structures indicates the emergence of societies markedly more complex than anything currently documented in the Late Stone Age. The best-documented examples come from the Middle Niger region and the Nigerian forest. In these areas, earlier diffusionist models in which complexity originated outside West Africa have yielded to evidence that indigenous processes were instrumental in this transformation. Trade, ideology, climate shifts, and indirect influences from North Africa, including the introduction of the domesticated horse to the Sahelian grasslands, are identified as factors essential to an understanding of these processes.     

Neolithic Pottery Traditions from the Islands, the Coast and the Interior of East Africa

Scholars have attributed the spread of agriculture and pottery technology to the larger part of eastern and southern Africa to Bantu speakers. However, the spread of similar aspects to the Kenya and Tanzania Rift Valley as far south as Eyasi Basin and as far east as Mount Kilimanjaro has been attributed to Cushitic speakers. Whereas the spread of these innovations to the Rift Valley region can be dated back to 3000 BC, the remaining part of eastern and southern Africa is alleged to have received similar innovations only after the BC/AD changeover, when iron technology was introduced. These theories can no longer be sustained. The coast of Tanzania, its immediate hinterland, and the deep sea islands of Zanzibar and Mafia were settled by people who had knowledge of agriculture and pottery making probably from 3000 BC. These innovations are also found to have spread to southern Africa in the last millennium BC. The introduction of iron technology and beveled/fluted pottery, associated with Bantu speakers, was just another stage in the cultural evolution of the people of eastern and southern Africa, but not the beginning of settled, farming/domesticating communities.La diffusion de l'agriculture et la technologie de poterie à la région plus grande de l'Afrique orientale et méridional ont était attribué au parleurs des langues bantou. Cependant, la diffusion des aspects semblables au Rift Valley de Kenya et Tanzania, sud au Bassin d'Eyasi et est au Mont Kilimanjaro ont était attribué au parleurs des langues Cushitic. Tandis qu'on peut dater la diffusion de ces innovations à la région du Rift Valley à 3000 BC, il est prétendu que la région restante d'Afrique orientale et méridional ont reçu les innovations similaires seulement après le changement de BC/AD, au temps que la technologie de fer était indroduit. Il n'est pas possible maintenant à sustenir ces théories. La côte de Tanzania, son hinterland immédiat/les regions près de la mer, et les îles de Zanzibar et Mafia, ont étaient colonisé par les personnes qui avait la connaissance de l'agriculture et de la poterie probablement à partir de 3000 BC. On peut trouver aussi que ces innovations ont diffusé à l'Afrique méridional pendant la dernier millénaire avant J. -C. L'introduction de la technologie du fer et la poterie avec le biseau, liée avec les parleurs des langues bantoues, était seulement un autre étape dans l'évolution culturelle du peuple de l'Afrique orientale et méridional. Il n'était pas le commencement des communautés établis qui ont pratiqué l'agricole et la domestication.     

On the spatial and technological organisation of hafting modifications in the North African Middle Stone Age

Aterian stone tools represent one of the clearest indications of technological regionalisation in the North African Middle Stone Age. Found in association with Homo sapiens skeletal remains and more recently with symbolic material culture, the Aterian is widely thought to reflect modern human identity and cognition. As a lithic industry, the Aterian has been primarily defined by the presence of stemmed or tanged tools, but there has been little quantitative study of the relationship between tangs and other forms of hafting modifications, such as shouldering and basal thinning. Understanding the diversity of these features and their relationships with one another will clarify the organisation and adaptations of North African populations during Marine Isotope Stage 5 (MIS 5, ∼130–70,000 years ago), a critical timespan for modern human dispersal. This paper presents the results of a stepped analysis of fifteen Aterian and other non-Aterian assemblages from the same spatial and temporal bracket in North Africa. Using Correspondence Analyses together with a suite of other statistics, the results indicate that tanging represents a widely applied strategy of hafting a variety of different tools. On the other hand, basal thinning is specifically correlated with lightweight, highly retouched points. The distribution of these features appears to reflect geographical proximity and shared environments, rather than articulating with traditional named industries. This in turn suggests that a continued focus on tangs to differentiate an ‘Aterian’ from other, contemporary North African MSA industries may be obfuscating regional-scale patterns of technological diversity.     

Holocene later stone age hunter-gatherers south of the Limpopo River, Ca. 10,000-2000 B.P.

Encouraged by new, ethnographically grounded interpretations of San rock art, Holocene hunter-gatherer research south of the Limpopo has undergone a partial paradigm shift over the last decade, away from ecological issues and in favor of questions of social organization and ideology. Earlier models relating changes in regional demography to environmental shifts now need revision, as do long-standing studies of seasonal mobility. New research emphasizes instead identification of exchange and alliance networks and patterns of seasonal aggregation and dispersal. However, several of the assumptions of these models remain untested, while dating problems make it difficult to integrate rock art with other components of the archaeological record. Critical use of a more diverse set of ethnographic data, from both within and beyond the Kalahari, is also needed. These points are emphasized in discussing evidence for social and economic intensification between 5000 and 2000 B.P. in several areas of the subcontinent (KwaZulu-Natal, the southern, eastern, and far western Cape).     

Changing perceptions of West Africa's past: Archaeological research since 1988

Archaeological research since 1988 in West Africa has focused almost exclusively on the period since 10,000 B.P. Significant advances have been made in our understanding of the Late Stone Age in the Sahara and Savanna zones, the advent of metallurgy and subsequent changes in metal technology, and the comparative trajectories of complex societies in different regions. Increasingly, data are being recovered that fail to conform to earlier Eurocentric assumptions emphasizing linear, progressive change through a series of evolutionary ages and stages. The search for new, more appropriate models for interpreting West Africa's past has infused the discipline with great theoretical vitality. Both ethnoarchaeological studies and traditional archaeological research programs in West Africa are contributing substantially to the articulation of new theoretical frameworks for African archaeology and potentially for the discipline as a whole.     

New research on the Holocene settlement and environment of the Chad Basin in Nigeria

Recent investigations of three archaeological sites in the Nigerian part of the Chad Basin during the Holocene reveal key stages in the cultural development and environmental history of that region. At Dufuna, a dugout boat was dated to around 6000 BC, making it the oldest known boat in Africa and one of the oldest in the world. Boats may thus have contributed to the mobility of the population of the southern edge of the Sahara 8000 years ago and, thereby, to the cultural homogeneity of this period. The pottery site at Konduga is around a thousand years younger than Dufuna but still belongs to the time of Mega-Chad. The site is on the Bama Ridge, an old shoreline. Its pottery, decorated in the Saharan tradition, belongs to the earliest ceramic phase of the West African Later Stone Age, long before the beginnings of food production. Although this site was probably settled by pioneers advancing into a largely flooded landscape along the slightly raised shoreline, the human occupation of the area previously covered by Mega-Chad began along a broad front around 2000 BC. Archaeological and palaeoecological finds from two settlement mounds at Gajiganna are described as case studies for this phase, which predates the well-known site of Daima.

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Résumé Les résultats présentés proviennent de recherches récentes sur trois sites archéologiques, dont chacun représente un épisode clé du développement culturel et de l'histoire environnementale du Bassin nigérian du Tchad au cours de l'Holocène. A Dufuna, la découverte d'une pirogue monoxyle, datée d'environ 6000 ans BC, constitue le témoignage le plus ancien d'une embarcation en Afrique et l'un des plus ancien dans le monde. Ce moyen de transport indique la mobilité des populations de la marge sud du Sahara à l'Holocène inférieur et moyen; ce qui a dû contribuer à l'homogénéité culturelle de cette période. Le site à poterie de Konduga est le plus jeune d'un millénaire que Dufuna, mais appartient à l'époque du Méga-Tchad. Le site est installé sur une ancienne ligne de rivage, la Bama Ridge. Sa poterie, décorée selon la tradition saharienne, appartient à la plus ancienne phase à céramique du Later Stone Age ouest-africain, bien avant le début d'une production alimentaire. Vu que ce site ne devait étre occupé que par des pionniers aventurés dans un paysage largement amphibie à la faveur d'un mince cordon émergé, la colonisation de l'espace antérieurement couvert par le Méga-Tchad, débute le long d'un large front vers 2000 ans BC.Les trouvailles archéologiques et paléoécologiques de deux tertres anthropiques à Gajiganna sont décrites commes études de cas illustrant cette phase, qui précède celle du célèbre site de Daima.

     

Four Millennia of Cultural History in Nigeria (<Emphasis Type="Italic">ca</Emphasis>. 2000 B.C.–A.D. 1900): Archaeological Perspectives

This essay is an analysis of archaeological contributions to the understanding of Nigeria's cultural history between ca. 2000 B.C. and A.D. 1900 focusing on the following themes: the origins of food production; development and transformations in metallurgical traditions; the beginnings of social complexity; and the character of state formation and urbanism. The transformations in everyday material life as a result of the entanglement with the Atlantic commerce and ethnoarchaeological approaches to understanding material culture and archaeological contexts also receive attention. The essay provides pathways to some of the turning points in Nigeria's cultural history, shows the convergence and divergence of cultural historical developments in different parts of the country, and identifies the critical gaps in archaeological research agenda.     

Climate deterioration and land-use change in the first millennium BC: perspectives from the British palynological record

Climate deterioration at around the time of the Bronze Age/Iron Age transition has for long been argued to have resulted in upland abandonment in northern and western Britain, and recent research has provided evidence that a major climate downturn from 850 cal BC caused settlement abandonment in western Europe and potentially worldwide. It is, however, unclear to what extent only ‘marginal’ sites were affected, due to the lack of any systematic attempt to view the evidence for settlement and land-use change across a range of landscape types with differing sensitivities to environmental change. This paper addresses this issue by an evaluation of 75 pollen sequences spanning the late Bronze Age and early Iron Age in Britain to assess whether climatic deterioration was sufficient to cause widespread land abandonment. The results provide no evidence for wholesale land-use change at this time; the overall picture is one of continuity of land use or even increased agricultural activity. There are, however, hints of regional variability, with a greater tendency to abandonment of upland areas in Wales, and signs of woodland regeneration in agriculturally productive areas of lowland central southern England. The latter pattern may reflect a combination of rising ground-water levels affecting local land-use in the immediate vicinity of the mires which provide the source of the pollen data, against a backdrop of regional-scale social and economic changes at the Bronze Age-Iron Age transition.     

The Chronological Evidence for the Introduction of Domestic Stock into Southern Africa

This essay reviews radiocarbon dates associated with the earliest evidence of domestic stock in southern Africa and reviews existing models for their introduction in light of the current evidence. Two primary models exist for the introduction of domestic stock into southern Africa: an early Khoisan wave and an Early Iron Age source. Neither model is completely supported by the evidence. Available chronological evidence suggests that Khoisan and Iron Age herders simultaneously ushered domestic stock into the northern and eastern regions of southern Africa. Early Iron Age groups in southern Zambia are likely external sources. Khoisan herders exclusively introduced domestic stock into Namibia and the Cape. However, in the northern and eastern regions of southern Africa, stock possession and transfers probably were complex and involved both Khoisan and Iron Age groups.     

Introduction to the project and excavation of Diepkloof Rock Shelter (Western Cape,South Africa): a view on the Middle Stone Age

This introduction presents the background to the present research project at Diepkloof Rock Shelter, initiated in 1998. It is followed by a series of original papers that were presented in November 2010 at the join 13th PAA Congress (Panafrican Association of Prehistory and Associated Disciplines) and 20th conference of SAfA (Society of Africanist Archaeologists) at the University Cheikh Anta Diop in Dakar (Senegal). These papers were presented in a “Symposium on the MSA sequence of Diepkloof Rock Shelter: a view on the cultural evolution of southern African modern humans” organized by Pierre-Jean Texier, Guillaume Porraz, John Parkington and Jean-Philippe Rigaud. This series of papers is a first attempt at a multidisciplinary reconstruction of the way Middle Stone Age people inhabited the site of Diepkloof and the way they interacted with their environment. The resultant narrative outlines artifactual change through the sequence and discusses the factors that might underlie it.     

Early Settlement and Archaeological Sequence of Northeast Yorubaland

This work examines the archaeological evidence for settlements in Northeast Yorubaland, using data obtained during fieldwork undertaken between 1985 and 1988. A reconnaissance survey was carried out in the vicinity of Iffe-Ijumu providing a comprehensive inventory of important archaeological features in the area. Excavations indicate that human settlement certainly extended into the ceramic phase of the West African Late Stone Age and that by at least 300 BC the rockshelters had been occupied. Evidence from the principal sites of Itaakpa, Oluwaju, and Addo indicates continuous occupation in the area during at least the last 2000 years.     

A Late Iron Age Boat‐Grave from Petersdal,Denmark

In 1921 a secondary grave was excavated in a Bronze Age burial‐mound on the island of Amager in the strait of Øresund between Denmark and Sweden. Recently the material was examined in detail and the result is presented here. This grave proved to be one of the few Late Iron Age boat‐graves in South Scandinavia. The boat, only preserved through a pattern of clench‐nails, was 10–12 m long. It contained traces of grave‐goods: sword, spear, riding‐gear, bucket and chest, but no trace of a body survived. The grave is contextually dated to the first half of the 8th century. © 2012 The Author     

The First Herders at the Cape of Good Hope

It is generally accepted that the earliest livestock and pottery were brought to the southern tip of Africa by Khoi-speaking herders from northern Botswana around 2000 years ago. The archaeological remains of that age, however, show no sign of such a migration. Rather, some evidence points to the arrival of the Khoi in the southwestern Cape toward the end of the first millennium AD. The earliest livestock and pottery, it is argued, probably reached the Cape of Good Hope some 2000 years ago by a process of diffusion. The implications of this model for the current debates on the transition from hunting to herding in southern Africa are discussed.