The Feathered Serpent Pyramid at Teotihuacan: decay,conservation and future perspectives

Abstract

The Feathered Serpent Pyramid at Teotihuacan, Mexico, is one of the most outstanding monuments of Mexican archaeological heritage. However, the volcanic stones that constitute the main façade of this building are subject to complex deterioration phenomena that include decay caused by the presence of water and soluble salts, as well as inappropriate treatments carried out in past decades. Agents of decay are explained in the article, as well as the means of diagnosis employed for their study. Recent conservation activities and other potential conservation treatments are also discussed.     

'Going Local in a Global World': Locating the Public and Evaluating the Synchronic Context in Archaeological Resource Management

Abstract

Locating, and effectively engaging with, the public is part of the discussions that have taken place in the last two decades of archaeological resource management, within the context of changing post-colonial, 'ethically correct', democratic and indigenous-orientated perceptions. This article briefly reviews this wide area of thinking, examining an alternative methodology for locating and engaging with the public based on the notion of 'local', before presenting some results from the island communities of the Aegean.     

Presenting the San Hunter-Gatherer Past to the Public: A View from the uKhahlamba-Drakensberg Park,South Africa

Abstract

The uKhahlamba-Drakensberg Park (UDP) was declared a World Heritage Site in 2000 on the basis of its magnificent scenery, biodiversity, and archaeological richness, comprising a rich corpus of rock paintings and occupation deposits relating to the San hunter-gatherers. The desire to encourage heritage tourism to the UDP following the declaration, along with the wish to present a more positive picture of the San hunter-gatherers, led to the development of the Kamberg (in 2002) and Didima Rock Art Centres (in 2003). These centres, together with the Main Caves visitor attraction, which had been redeveloped in 1998, distinguish the UDP as the premier region in South Africa for the interpretation of the San past. Cognizant of the critical role that public interpretation plays in the management of archaeological resources, this paper investigates which aspects of the archaeological record have been stressed and which have been overlooked, the relationship between the interpretations and the findings of UDP archaeological research since the 1970s, and whether these findings enhance the significance and value of the resources and thereby promote their management. It is shown that the overall interpretive emphasis is on rock art and that information derived from Later Stone Age hunter-gatherer excavations since the 1970s have been neglected. Furthermore, it is revealed that the display of Early and Middle Stone Age material at Didima is inconsistent with regional archaeological findings and that there is a neglect of local archaeological remains. It is concluded that the development of any further attractions should be based on an interpretive plan which considers the interpretive requirements of the region as a whole.     

Impulses of agro-pastoralism in the 4th and 3rd millennia BC on the south-western coastal rim of Norway

Abstract

A review of the available archaeological and palaeoecological evidence from the coastal heathlands of south-western Norway was compiled to reveal the processes of neolithisation proceeding from the Early Neolithic towards the generally accepted breakthrough in the Late Neolithic, 2500/2350 cal. BC. South-western Norway then became part of the Scandinavian, and thus the European, agricultural complex. Three phases of forest clearance are recorded — from 4000–3600 cal. BC, 2500–2200 cal. BC and 1900–1400 cal. BC. Deforestation was intentional and followed a regional pattern linked to the geology and topography of the land. In the first period (4000–2500 cal. BC), forage from broad-leaved trees was important, while cereal cultivation was scarcely recorded. Agro-Neolithic (here referring to agriculturally-related Neolithic) artefacts and eco-facts belonging to the Funnel Beaker and Battle Axe culture are rare, but pervasive. They must primarily be considered to be status indicators with a ritual function; the hunter-gatherer economy still dominated. The breakthrough in agro-pastoral production in the Late Neolithic was complex and the result of interactions between several variables, i.e. a) deforestation resulting from agriculture being practised for nearly 1500 years b) experience with small-scale agriculture through generations and c) intensified exchange systems with other South Scandinavian regions. From 2500/2350 cal. BC onwards, two distinct environmental courses are noticeable in all pollen diagrams from the study area, indicating expansion in pastoralism, either towards heath or towards grassland and permanent fields.     

Determining the preservation rating of submerged archaeology in the post-glacial southern North Sea: a first-order geomorphological approach

Abstract

During most of the last glaciation, the southern North Sea floor was exposed and accessible to humans. Archaeological finds are concentrated around Brown Bank, Dogger Bank and the Norfolk Banks, but the Palaeolithic and Mesolithic archaeological potential of these areas is poorly known. Management of submerged archaeological heritage requires knowledge about location (potential) and context, ascribing significance (value) and determining risk. Thus, the preservation potential of primary and secondary archaeological material around these three areas is considered a) in the context of the post-glacial evolution of the southern North Sea and b) regarding natural and anthropogenic processes. A detailed review is followed by original research material describing an approach to assessing preservation potential. In general, low-energy deposits associated with former intertidal, floodplain or lacustrine environments are likely to preserve primary archaeological material, including organic remains, whilst (high-energy) riverine environments are more likely to preserve inorganic secondary archaeological material. The main possible anthropogenic impacts on submerged archaeology result from beam trawling, which may disturb deposits at the seafloor, and aggregate dredging, which may remove secondary deposits. Trawling and aggregate dredging are increasingly contributing to knowledge, through reporting finds through established protocols, and through assisting in funding relevant to multi-disciplinary research.     

ARCHAEOMETRY AT TEXAS A&M UNIVERSITY: CHARACTERIZATION OF SAMOAN BASALTS

The Elemental Analysis Laboratory provides research support for campus users and service analyses for the University, other state and governmental agencies and private industry. The laboratory's primary concern is the application of unique methodology to a wide range of analytical problems that arise in the course of efforts by University researchers. For the past decade or so, compositional analysis by neutron activation analysis of archaeological artefacts for the purpose of studying provenance, trade or cultural patterns of prehistoric populations has become an area of focus. The present communication will discuss the laboratory in general and the scope and significance of the archaeology work done within the organization. A brief example of a current project involving the study of geologic samples from prehistoric stone tool quarries from American Samoa is presented as an illustration.     

FROM SUSA TO ANURADHAPURA: RECONSTRUCTING ASPECTS OF TRADE AND EXCHANGE IN BITUMEN‐COATED CERAMIC VESSELS BETWEEN IRAN AND SRI LANKA FROM THE THIRD TO THE NINTH CENTURIES AD*

In contrast with artefactual studies of long‐distance trade and exchange in South Asia during the Prehistoric and Early Historic periods ( Ardika et al. 1993 ; Gogte 1997 ; Krishnan and Coningham 1997 ; Tomber 2000 ; Gupta et al. 2001 ; Ford et al. 2005 ), few scientifically orientated analyses have focused on artefacts from the region's Historic period. During excavations at the ancient city of Anuradhapura, Sri Lanka, a number of buff ware ceramics with a putative organic coating on the interior were recovered ( Coningham 2006 ). Dated stylistically to between the third and ninth centuries ad , analysis of the coatings using gas chromatography–mass spectrometry (GC–MS) and stable isotope analysis (carbon and deuterium) confirmed that the coatings are bitumen—an organic product associated with petroleum deposits. There are no known bitumen sources in Sri Lanka, and biomarker distributions and isotopic signatures suggest that the majority of the samples appear to have come from a single bitumen source near Susa in Iran. The relationship between the bitumen coatings and the vessels is discussed, and it is suggested that the coatings were used to seal permeable ceramic containers to allow them to transport liquid commodities. This study enhances our knowledge of networks of trade and exchange between Sri Lanka and western Asia during Historic times.     

DETERIORATION ASSESSMENT OF WATERLOGGED ARCHAEOLOGICAL LIGNOCELLULOSIC MATERIAL VIA 13C CP/MAS NMR*

This study investigates the residual chemical composition of waterlogged archaeological lignocellulosic material found in Greece. Hazelnut pericarps and oak wood found in a 16th‐century wreck, along with endocarps of olives dated at 300 bc , were examined. ¹³C CP/MAS NMR was applied to compare fresh and waterlogged archaeological materials. Results show qualitative alterations in their composition. The virtual absence of peaks at ~21 ppm and ~173 ppm, corresponding to hemicelluloses in all archaeological materials, indicates that these constituents can be an important indicator in assessing the type and degree of deterioration.     

TOOLS TO QUALIFY EXPERIMENTS WITH BLOOMERY FURNACES*

Five experimental bloomery iron ore smelts were carried out in a reconstruction of an early medieval furnace of the Boécourt type (Switzerland). A part of the bloom from the most successful experiment was forged to a billet. Starting materials and products were weighed, described and chemically characterized (ICP-MS, LA-ICP-MS and WD-XRF). The calculation of the yield and mass balance based on the chemical analyses from the ore (optimum) and from the ore, furnace lining, slag and ash (applied) allow the determination and quantification of the materials involved in the process. This permits the interpretation of the quality of the experiments. The chemical characterization of metal produced from hematite ore from the Gonzen Mountains in Switzerland gives archaeologists the possibility to compare the metal of iron artefacts to metal from this mine. Finally a good agreement between experiments and archaeological reality can be shown.     

Book Review

Abstract

The year 2011 marks the twenty-fifth anniversary of the World Archaeological Congress (WAC). WAC marked a bold intervention in the politics of knowledge in archaeology in the context of the mid-1980s. But how has it fared in contemporary worlds of practice? In this paper, two senior WAC members take a close and critical look at the changing fortunes, meanings, and contexts of the organization. At its centre, is an account of the controversial meeting between the WAC Executive and Rio Tinto Limited, the mining multinational, in Melbourne in 2007. Other parts of the paper engage with notions of the Indigenous, and discuss the assumptions informing the WAC programme Archaeologists Without Borders. Framed as a challenge, the paper invites response and commentary, as a way of opening debate which allows us to envisage alternative futures for the discipline, beyond the banal prospect of 'Archaeology Inc.'.