Igbo-Ukwu and the Nile

The external connections of Igbo-Ukwu, in the forest belt of south-eastern Nigeria, around the ninth century AD, are demonstrated by the large numbers of glass beads, apparently of Egyptian manufacture, and are implicit in the rich collection of bronze artwork that lacks known prototypes. Although the metals were mined locally, the labor and the expert alloying and casting of numerous ritual or ornamental objects indicate an accumulation of wealth derived from distant trade of special commodities. The identification of these commodities, however, and the routes by which they—and in the reverse direction the beads—would have traveled, remain unsatisfactorily resolved. A preference is repeated here for an eastern Sahelian routing from Lake Chad to the Middle Nile kingdoms (Alwa and Makuria/Dongola), then at their height, thus avoiding the Sahara. The alternative direction suggested recently (Insoll, T., and Shaw, T. (1997) Gao and Igbo-Ukwu: Beads, interregional trade and beyond. African Archaeological Review, 14:9–23), through Gao on the Niger bend and across the west-central Sahara, seems less likely on grounds of geography and chronology. The essential items of merchandise deriving from Igbo-Ukwu are unlikely to be those commonly assumed for sub-Saharan Africa, notably ivory and slaves, but would have been more local and precious, presumably metals. The bronzes stored and buried at Igbo-Ukwu might be regarded as by-products of this export activity. Demands in the Nile Valley for tin (for bronze alloying) and for silver, both of which occur in the ores exploited, deserve consideration. A call is made for comparative study of metals and their uses between the Middle Nile and West Africa in the first millennium AD—a neglected subject owing to the intellectual gulf that persists between Africanists and Egyptologists.Les contacts extérieurs d'Igbo-Ukwu, dans la région forestière du sud-est du Nigéria, vers le 9^e siècle après J. C., sont indiqués par les très nombreuses perles de verre, apparemment de fabrication Égyptienne. Ils sont aussi suggérés par un ensemble remarquable d'objects en bronze dont on ne connaît aucun prototype. Bien que les métaux proviennent de la région, le travail, et aussi l'alliage et la fonte très spécialisés de nombreux objects rituels ou décoratifs, indiquent une accumulation de richesse résultant du commerce à longues distances de produits recherchés. Pourtant, l'identification de ceux-ci, et les itinéraires pour leur transport—et, en sens inverse, ceux des perles—restent hypothétique. Nous réiterons une préférence pour une route est-Sahelien, de Lac Tchad jusqu'aux royaumes du Nil Moyen (Alwa et Makouria/Dongola), à leur apogée à cette époque, et donc évitant le Sahara. L'autre direction, proposée récemment (dans cette revue par Insoll et Shaw), via Gao sur la boucle du Niger et à travers le Sahara ouest-central, semble moins probable pour les raisons géographiques et chronologiques. Les objets principaux de ce commerce qui provenaient d'Igbo-Ukwu ne seraient pas ceux qui sont normalement imaginés pour l'Afrique Sub-saharienne, notamment l'ivoire et les esclaves; ce seraient des produits plus locaux et précieux, vraisemblablement des métaux. Les bronzes enterrés à Igbo-Ukwu pourraient être les sous-produits de cette activité destinée à l'exportation. La demande dans la vallée du Nil pour l'étain (pour l'alliage du bronze) et pour l'argent, qui existent tous les deux dans les minerais du sud-est du Nigéria, mérite considération. Il faut qu'on fasse des recherches comparatives sur les métaux et leurs emplois entre le Nil Moyen et l'Afrique de l'Ouest durant le premier millénaire après J. C.—un sujet négligé à cause du fossé intellectuel qui persiste entre les études Africanistes et Égyptologiques.     

Rethinking the Dawn of History: The Schedule,Signature, and Agency of European Goods in Protohistoric Illinois

Abstract

Interpretations of the archaeological record of the seventeenth century Illinois Country have been temporally compressed, and the richly stratified archival, ethnographic, and material records from that era have not been applied to the archaeological information at hand. A muddied view of the remarkable changes that occurred within the cultural landscape of Illinois is the result. European goods first appear in the region between 1580 and 1630 and the pottery of the Illinois Indians—the Danner series—is present in each early Illinois sample that includes these imports. A reexamination of the Zimmerman, Palos, and Oak Forest sites suggests that temporal changes in trade good assemblages can be better understood in the context of historically documented trade schedules. Further, it is argued that the Illinois Indians actively positioned themselves in the political and economic landscape of the fur trade many decades prior to the arrival of the French in the Illinois Country, serving as the principal agents of the great changes that are associated with protohistory in Illinois.     

Ground Penetrating Radar in the Northern Great Lakes: A Trial Survey of a Contact Period Occupation in Marquette County,Michigan

ABSTRACT

Timing, inclement weather, and limited budgets can obstruct archaeological survey efforts. Here, we ameliorate some of these with use of ground penetrating radar (GPR) at the Goose Lake Outlet #3 (GLO#3) site (20MQ140). GPR surveys to guide survey and excavation efforts in these well-drained sandy soils are limited. GPR imagery exhibited false positives; however, shovel probes, subsequent site excavation, and artifact analysis led to numerous discoveries at this protohistoric site—including glass trade beads dating to the 1630s. These discoveries solidify evidence for some of the earliest European-made trade items in the region and provide further confirmation for placement of an Indian trail and ancient travel corridor between Lake Superior and Lake Michigan. Two ¹⁴C samples obtained from moose-bone in features with trade goods fall within the expected occupation range of 1633–1668 and 1615–1647. Several anomolies, possible hearth clusters were seen on the GPR imagery; however, many features remained invisible.     

Beads from a mediaeval pilgrim centre: Chemical composition and provenance of glass from Banganarti,Nubia, Sudan

Christian Nubia was a region with intensive transcultural connections that are visible through the understudied overseas glass bead imports found there. This paper presents the results of an analysis of 20 glass beads from Banganarti, a Christian pilgrim site active during the Makuria kingdom (mid-sixth to 14th centuries CE). Compositional analyses using laser ablation–inductively coupled plasma–mass spectrometry (LA-ICP-MS) have identified glass belonging to a number of broad compositional groups. Two beads were made of mineral soda-lime glass, dated before the mid-ninth century CE. Numerous beads were made from plant ash-soda-lime glass associated with “Mesopotamian” production dated between the eighth and 10th centuries CE. Lead-soda-silica glass has parallels in the ninth–10th centuries glass found in Africa and Europe. One plant ash-soda-lime bead was of eastern Mediterranean origin dated after the 10th century CE. Results of this study provide new evidence for provenance and chronology of glass beads available in the mediaeval Northeast Africa as well as contribute new data to the research on the pilgrim and/or trade routes of that time.     

The international factor at Igbo-Ukwu

Archaeomineralogical fieldwork in south-eastern Nigeria combined with metallurgical analyses has now all but confirmed the local provenance of most of the metals used in manufacturing the bronze and copper vessels, ornaments and sculptures which were kept and buried at Igbo-Ukwu about the ninth or tenth century AD. This demonstration may further support the view that the technical skills and artistic inspiration of Igbo-Ukwu were largely locally evolved. Yet the lack of prototypes remains disconcerting. Such a large collection of exquisite bronze artwork and ritual objects is unparalleled for this region at that period; and attempts to explain the circumstances which gave rise to Igbo-Ukwu remain unsatisfactory. It is argued here that, whatever local factors, either religious or secular, may have obtained at that time, there was also an international one. Presumably this region was for a period producing a rare and geographically specific mineral then in high demand in the wider world. The bronzes may be in effect the by-product of that mining and production for export. It is suggested that the principal trade-routes then may not have crossed the Sahara to Muslim North Africa but have run eastward from the Lake Chad region to the Christian countries of the Nile. There may be a hint of this in certain of the bronze forms. Moreover, contact with Egypt, if not indirectly with lands beyond, is demonstrated at Igbo-Ukwu by the vast numbers of imported beads.

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Résumé Un travail archéominéralogique de terrain au sud-est du Nigeria, combiné avec des analyses métallurgiques confirme maintenant la provenance locale des métaux utilisés pour la fabrication des récipients en bronze et en cuivre, des ornements et des sculptures gardés et enterrés à Igbo-Ukwu aux alentours du 9ème et 10ème siècles. Ceci renforce l'hypothèse que les techniques et l'inspiration artistique résultent à Igbo-Ukwu d'une évolution locale. Mais l'absence de prototypes reste déconcertante. Une collection aussi importante d'oeuvres d'art en bronze et objects rituels si raffinés est sans parallèle dans cette région à cette période et les tentatives pour expliquer les circonstances qui conduisirent à l'apparition d'Igbo-Ukwu restent peu satisfaisantes. Cependant, et quels que soient les facteurs locaux, religieux ou profanes qui existaient à cette période, un facteur international a dû jouer. Il est possible que cette région ait pendant une certaine période produit un minéral rare et géographiquement localisé faisant à l'époque l'objet d'une grande demande bien audelà de la région. Les bronzes pourraient donc être les sous-produits d'activités d'extraction et de production destinées à l'exportation. Il est aussi suggéré qu'à cette époque, les principales routes du commerce ne traversaient peut-être pas le Sahara pour joindre l'Afrique du Nord musulmane, mais allaient plutôt en direction de l'Est à partir de la région du Lac Tchad jusqu'aux pays chrétiens du Nil. L'indice pourrait en être la forme de certains bronzes. De plus, des contacts avec l'Egypte, si pas indirectement avec des pays au-delà, sont démontrés par la présence à igbo-Ukwu d'un grand nombre de perles importées.

     

Chemical Analysis of 17th‐century Red Glass Trade Beads from Northeastern North America and Amsterdam

Seventeenth‐century opaque red (redwood) glass trade beads of different shapes and sizes were made of mixed alkali (mainly soda)–lime glasses and were coloured with Cu, presumably as cuprous oxide or as finely dispersed elemental Cu. During the early 17th century, beads of all shapes were opacified with Sn; cored beads, with uncoloured cores and hence lower Cu levels, also tended to have slightly lower Sn contents than uncored beads. By the mid‐17th century, cored tubular beads were being opacified with a combination of Sn and Sb, a technological change similar to that observed in white glass trade beads, while uncored redwood beads appear not to have been opacified with either Sn or Sb. Bead chemistries are sufficiently different to allow them to be sorted into subgroups, which may then be tracked in various archaeological sites and regions.     

Beyond the Visual: Considering the Archaeology of Colonial Sounds

Many historians and archaeologists have focused on trade goods in the French colonies, yet few have examined how these items were animated in colonial contexts. Here, the issue of colonial performance as it related to trade goods (such as hawk bells, brass tinklers, glass beads) is examined and it is argued that the power of these objects was more than purely visual. Case studies from French Louisiana are presented to discuss the intersection of bodies and objects, of the exotic and the erotic towards understanding the sounds that emanated from colonial communities and households.     

European Trade in Malawi: The Glass Bead Evidence

In most African contexts, glass beads are evidence of direct and indirect exchanges between communities and are often useful chronological markers. Their analysis contributes to a better understanding of the social relationships between ancient societies. Over the last decade, the archaeometric analysis of glass beads has gained ground in Sub-Saharan Africa, but large regions across southeastern Africa have remained underexplored. Glass beads excavated from the Hora 1, Hora 5, and Mazinga 1 sites in the Kasitu Valley of the Mzimba District of northern Malawi were analyzed using laser ablation—inductively coupled plasma—mass spectrometry (LA-ICP- MS). These are granitic rock shelter sites located 40 km from Lake Malawi. They have predominantly Early Holocene and Pleistocene deposits but with a scattering of more recent material at the top. Analysis revealed that most of the beads were from European manufacture with one exception—a bead that has a composition typical of South Asia and that circulated from the fifteenth to the seventeenth century AD. Although Europeans were not present in the region before the second part of the nineteenth century, the presence of European beads testifies to trade directly or indirectly involving Europeans, most likely in association with increased trade in ivory and enslaved persons. The presence of the bead from South Asia and two cowrie beads from a fourth nearby site (Kadawonda 1) that dates to the seventh century AD show that European trade was the most recent manifestation of connections between the hinterland and the coast.

     

THE EARLY CHRONOLOGY of ALET, and ITS IMPLICATIONS FOR HENGISTBURY HEAD and CROSS-CHANNEL TRADE IN the LATE IRON AGE

The port of Alet (Saint-Malo) plays a key role in models of cross-Channel trade prior to the conquest of Gaul. It is argued here that the bulk of the archaeological evidence from this site may however be more correctly assigned to the decades following the Gallic War, and consequently it is necessary to reassess the nature of the connection between Alet and Hengistbury Head in the first half of the first century BC. the evidence of amphorae and recent work on Armorican pottery, combined with a consideration of the problems of navigation in this region, indicates that a coastal route was preferred to a cross-peninsular journey via Alet; it is suggested that Guernsey may have been an important point on this route, and that Alet and the gulf of Saint-Malo were usually avoided. the evidence presented seems to support Caesar's comment that the Veneti controlled cross-Channel trade at this period.     

Settlement and Trade from AD 500 to 1800 at Angoche,Mozambique

Angoche was an important historic trading port on the northern Mozambique coast. A maritime archaeological survey was undertaken of the islands and mainland to study Swahili trade, clarify the sequence of settlement development and record the exploitation of resources during the medieval and post-medieval periods. Previous archaeological investigations have revealed local ceramics from the early second millennium AD and imports from the late fifteenth century. According to oral traditions and ancient sources, Angoche’s growth is associated with the arrival of coastal settlers from Kilwa in 1485. The survey revealed evidence for occupation dating from c. AD 500 and trading evidence from the late first millennium AD. Artefacts from the thirteenth to sixteenth century on the islands are similar to those found at Kilwa and Sofala, which shows a link to Kilwa earlier than the oral traditions and the name of one of the Angoche Islands ‘Quilua’, is Kilwa in Portuguese. The islands are well resourced in terms of rice, mangrove wood, seafood and farmland and offer sheltered inlets and access to the coastal trade route. The name of Angoche relates to a port of call and the presence of ninth-tenth-century- storage vessels from southern Iran supports this theory. Traded glass and ceramic artifacts and beads increase from the late medieval period revealing that Angoche became an important and wealthy entrepôt. The lack of coral limestone and reef coral, on the sandy Angoche Islands, indicates some building materials would have had to have been imported. Although many buildings would have been made of wood, some stone ruins are likely to have been demolished and burnt to make lime. The original stratigraphy of many sites has been destroyed by aeolian and marine processes but the survey has shown that valuable information on settlement location and ethnographic practices can still be recovered.     

A Raman spectroscopic study of glass trade beads excavated at Mapungubwe hill and K2, two archaeological sites in southern Africa,raises questions about the last occupation date of the hill

Thousands of glass trade beads were excavated over a 75 year period on Mapungubwe Hill and at K2, two archaeological sites in the Limpopo valley, South Africa. An assemblage of 175 beads that appeared to be different in shape, size and colour (red, yellow, green, blue, white, black, pink, plum) was studied with Raman scattering. At least seven different chromophores or pigments (lazurite, lead tin yellow type II, Ca/Pb arsenate, chromate, calcium antimonate, Fe–S “amber” and a spinel) have been identified. Pigment identification allows the recognition of specific productions and indicated that many of the pigments colouring the beads excavated on Mapungubwe hill were manufactured after the 13th century, confirming the presence of modern beads in the archaeological record, some dating from the 19th century. This date is in agreement with the last occupation date for the hill suggested by the earlier excavators and raises questions about the revision of this date to 1290 AD by archaeologists in the 1970’s.     

Palace Fundamentalism and Liberal Democracy: Oil,Arms and Irrationality

With the end of the Cold War, some students of international affairs have suggested that the next field of conflict will be defined in cultural terms, between West and East, and particularly between liberal democracy and Islam. In this essay, it is argued that constructing a dichotomy between ‘rational’ Western democracy and ‘irrational’ Islam is not only dangerous but hypocritical. Support for the most backward and fanatical forms of Islamic fundamentalism has long been an element in the global geopolitical strategies of Western democracies. The trade in oil and arms has had particularly perverse social and political effects, which must be confronted in order to provide greater opportunities for the development of a modern civil society in the Arab world.     

湖北宜昌万福垴遗址出土费昂斯珠科技分析与研究

湖北宜昌万福垴遗址是西周中晚期至春秋时期的以楚文化为主的遗存,以该遗址M8出土的费昂斯(faience)珠为研究对象,以期通过分析其成分和结构特征并讨论其工艺特征,丰富对长江中下游地区该时期费昂斯的相关认识。本研究使用扫描电子显微镜,分析结果显示费昂斯制品以富钾费昂斯及混合碱费昂斯为主。再依据以往发表的西周时期费昂斯制品的科技研究,结合考古发掘相关材料,试图从费昂斯器物使用方式的角度,窥视其在古人精神文明进程中的角色,反观费昂斯在中原地区的发展脉络。     

THE EAST MEDITERRANEAN LATE BRONZE AGE GLASS TRADE WITHIN THE CONTEXT OF THE PANAZTEPE FINDS

The Late Bronze Age is a period during which intensive transactions occurred in the Mediterranean and Near East. The glass trade became a real industry, exhibiting the innovations of the period from around the region. The glass finds of the Late Bronze Age consisted of valuable gifts exchanged between the elite classes of Mesopotamia, Egypt and the Aegean. The objective of this study is to reconstruct Late Bronze Age glass trade systems in the light of archaeological data recovered from Panaztepe, located in the Izmir region of west Anatolia. The glass finds at Panaztepe are represented by examples such as necklace spacers, relief beads, and spherical and circular beads recovered from the two burial grounds. While the interior chronologies of the tombs have not been completely distinguished, it is thought that most of these finds were used during the Late Helladic III A–B periods.     

NEUTRON ACTIVATION ANALYSIS OF AD 1660–1930 EUROPEAN COPPER-COLOURED BLUE GLASS TRADE BEADS FROM ONTARIO,CANADA

Blue glass trade beads from well-dated late seventeenth- to early twentieth-century sites and collections have been analysed non-destructively by instrumental neutron activation analysis. The beads display enough variations in their elemental contents to allow us to characterize the different chemistries. The implication of these results is that similar chemical analyses of blue beads from undated archaeological sites may be used to help date the sites, since each bead chemistry has a specific earliest period.     

A Late 17th‐Century Trade Cargo from Ponta do Leme Velho,Sal Island,Cape Verde

In 1973, while recovering copper cargo from a 20th‐century ship wrecked off the Ponta do Leme Velho on the south‐east side of Sal Island, Cape Verde, explosives revealed an earlier ship cargo with dozens of Portuguese faience plates and bowls, glass beads and metal objects, including buckles, ammunition and copper manillas. The assemblage, including the ceramics and a marked silver tastevin, provide a site date between 1680 and 1700. The research presented here is a result of collaboration between CPAS and the authors in 2008 to analyse this assemblage in the context of late 17th‐century maritime trade.     

XRF analysis of glass beads from the Mycenaean palace of Nestor at Pylos,Peloponnesus, Greece: new insight into the LBA glass trade

In recent years there has been a growing interest in Mycenaean glass among archaeologists and scientists. Scholars have traditionally thought that all Mycenaean glass was imported either in finished form or as ingots and simply shaped or worked at the Mycenaean sites. Chemical studies of other Mycenaean glass (50 and 43) support the hypothesis that glass was imported into Mycenaean Greece, but there is also indication for glass production in mainland Greece at the palace of Thebes (Nikita and Henderson, 2006). There is no evidence for glass making or working at the Palace of Pylos, yet there is an abundance of glass beads there. The aim of this paper is to identify the technology and source for the glass of these beads and thus to ascertain how Pylos was connected to the broader Mycenaean and Mediterranean economies. The composition of the glasses was determined by means of portable XRF analysis and compared to that of other Late Bronze Age glasses from Egypt, Mesopotamia and mainland Greece. Four blue beads coloured with cobalt and one blue bead coloured with copper have Ti and Zr compositions consistent with an Egyptian origin of manufacture while five other beads show Ti and Zr concentrations consistent with a Mesopotamian origin (Shortland et al., 2007). Based on the dearth of Egyptian and Mesopotamian imports in Pylos, the presented data support the hypothesis that Pylos was receiving via internal Greek trade routes foreign-produced glass, which may have been worked abroad or in Greece.     

NEUTRON ACTIVATION ANALYSIS OF SIXTEENTH- AND SEVENTEENTH-CENTURY EUROPEAN BLUE GLASS TRADE BEADS FROM THE EASTERN GREAT LAKES AREA OF NORTH AMERICA*

Sixteenth- and seventeenth-century European blue glass trade beads from aboriginal sites in the eastern Great Lakes area of North America have been analysed non-destructively using low neutron dose instrumental neutron activation analysis, so that the beads could be returned to their keepers. Dark blue (cobalt-coloured) beads are readily separable from turquoise (copper-coloured) beads. Differences in the chemistries of the turquoise blue beads appear to be useful in separating glass beads from the two centuries. Low calcium, sixteenth-century turquoise beads tend to distintegrate by a leaching of the alkali metals.     

ANALYSIS OF FIRST MILLENNIUM bc GLASS VESSELS AND BEADS FROM THE PICHVNARI NECROPOLIS,GEORGIA*

The Pichvnari necropolis on the Black Sea coast of Georgia lies in an area known in the late first millennium as ‘Colchis’, on part of the trade route leading to the Orient. The burials of the necropolis date to the late fifth century bc and frequently contain grave goods, including extremely well‐preserved polychrome glass beads and core‐formed vessels. This paper presents a study of these vessels both stylistically and archaeologically and using SEM–WDS and LA–ICPMS. It reveals that the vessels have compositional differences that may point to multiple manufacturing sites. One of the vessels appears stylistically unique and may exhibit one of the earliest uses of manganese as a decolorizer. Major and minor element data for the vessels suggest that they may belong to the same ‘Levantine’ group as many Roman glass objects, suggesting that a source of sand on the coast of the Levant could have been used in their production. The beads clearly show glass with both natron‐ and plant ash‐based flux with distinct rare earth compositions, showing multiple sites of production, some of which were probably either in the Middle East or the Indian subcontinent.     

Glass Trade Beads from the Goose Lake Outlet #3 Site (20MQ140), Marquette County,Michigan

This article describes analyses of the glass trade-bead assemblage of the Goose Lake Outlet #3 (GLO#3) site (20MQ140), a probable short-term winter campsite located in the Upper Peninsula of Michigan. Based on typological and attribute analysis of the beads, which employed the Kidd and Kidd classification system and comparison with published “glass bead periods” or GBPs developed for assemblages in Ontario, the GLO#3 bead assemblage is assigned a date within the 1630s. Comparison with other midwestern protohistoric assemblages further supports this interpretation. Situated within a protohistoric period of intercultural interaction and exchange, the material culture from the site provides archaeological evidence for some of the earliest arrivals of European-made trade items in the Midwest.