The economic importance of plant resources represented on archaeological sites

Techniques for estimating the economic importance of plants represented on archaeological sites have usually assumed that plant samples were random in composition. The effects of crop-processing activities and other factors upon the composition of each sample have frequently been overlooked, or their importance minimized. This article proposes an alternative approach and suggests that the economic value of a prehistoric plant resource can be ascertained by considering its context within crop-processing activities. It is argued that the merits of this technique are that it provides a more accurate means, first, of distinguishing between actual and potential plant resources, and secondly, of evaluating their importance.     

The archaeological significance of animal bones from Acheulean sites in southern Africa

Acheulean faunal samples from southern Africa usually contain taxa which are unknown in Upper Pleistocene or Holocene contexts and which suggest that the associated artifacts date mainly from the Middle Pleistocene or possibly the late Lower Pleistocene, between perhaps 1,000,000 and 130,000 years ago. Together with sedimentological evidence, the faunas also indicate that the associated Acheulean people enjoyed unusually moist conditions. There is in fact no evidence for Acheulean presence under conditions as dry as, or drier than, historic ones. The available faunas come mainly from open-air contexts where natural deaths, carnivore killing and scavenging, and possible human hunting and butchering are scrambled, and no direct inferences can be drawn about Acheulean hunting ability. However, if it is fair to extrapolate backwards from their better-documented Middle Stone Age successors, Acheulean people probably rarely, if ever, killed the large ungulates that are so common in their sites.

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Résumé Parmi les ensembles de la faune acheuléenne provenant de l'Afrique du sud se trouvent souvent des taxa qui sont inconnus dans les gisements de l'âge holocène ou du pleistocène supérieur. Cette observation nous amène à suggérer que les outils associés avec cette faune datent principalement du Pleistocène moyen ou peut-être même du Pleistocène inférieur tardif, dans la période, 1,000,000 à 130,000 BP environ. Ces faunes, considérées conjointement avec les témoignages sédimentologiques, montrent que ces gens acheuléens ont profités d'un climat anormalement humide. A vrai dire, il n'y a aucune preuve d'une occupation acheuléenne dans des conditions aussi sèches ou plus sèches que celles de l'époque historique. La plupart des faunes dont on dispose aujourd'hui proviennent des gisements de plein-air ou les évidences de la mortalité naturelle, les restes de la proie des carnassiers, et par l'homme sont mélangées, et nous ne sommes pas permis d'en déduire des conclusions au sujet de la compétence des populations acheuléennes au niveau de la chasse. Si cependant on peut extrapoler en arrière de leurs successeurs mieux connus de l'âge de la pierre moyen, il est vraisemblable que les hommes acheuléens n'ont jamais, ou presque jamais, tués les grands ongulés dont les restes sont si nombreux dans leur sites.

     

Holocene sulphur-rich palaeochannel sediments: diagenetic conditions,magnetic properties and archaeological implications

Extensive aggregate extraction in the middle Trent valley, England, has revealed a sequence of Holocene palaeochannels associated with nationally important, and predominantly organic, archaeological remains. This paper reports observations of hyper-acidity (below pH 2), high natural magnetism and metallic sphaerules (framboids) in Holocene palaeochannel sediments at two sites in the middle Trent valley. These properties are associated with high natural remanent magnetism which has allowed the successful palaeomagnetic dating of palaeochannel fills at one of these sites (Hemington). These sediment properties are the result of the formation of ferromagnetic iron sulphides, including griegite, under conditions of high sulphur availability (from groundwater) in the presence of metallic ions and organic matter under low redox conditions, with later oxidation producing the extreme natural acidity through oxidation of disulphide (pyrite). These findings explain why, under certain groundwater conditions, alluvial palaeochannel sediments can carry post-depositional remanent magnetisation and be suitable for palaeomagnetic dating. The low pH may also be beneficial in the initial stage of wood preservation and if the sediments remain waterlogged, but probably not retard decomposition after drainage and acidification, a process that is increasingly being recognised as a threat to archaeological sites in wetland environments.     

Taphonomy and dispersion of bones scavenged by New World vultures and caracaras in Northwestern Patagonia: implications for the formation of archaeological sites

Scavenger birds can feed on large- to small-sized vertebrates and may contribute in the formation of archaeological sites. To evaluate the modifications and dispersal patterns of bones produced by New World vulture and caracara from Northwestern Patagonia, samples of adult sheep, young sheep, and hare carcasses were offered and subsequently analyzed. New World vultures and caracaras quickly fed on the samples. Taphonomic and bone dispersal patterns suggest two types of accumulations: (1) open-air sites with large and medium-sized vertebrates represented by complete, fractured, scratched, notched, and punctured elements and (2) rock shelter or cave sites dominated by small vertebrates represented by broken, corroded, fractured, and digested elements.     

Food for thought: using game cameras to better understand the movement of bones by scavenging in archaeological faunal assemblages

This paper questions our understanding of the movement of bones by animal scavengers in the archaeological record. Since assumptions regarding the effects of animal scavenging shape final interpretations of skeletal element frequencies in archaeological faunal assemblages, they are important for our understanding and reconstruction of ancient human behaviour. The results of a 4-year actualistic kangaroo scavenging study from Australia are used to question our understanding of the movement of the bone by contrasting visual data captured by motion-activated digital game cameras with traditional taphonomic studies using skeletal element frequencies. Game cameras are commonly used by ecologists to capture the behaviour of living species but have not yet been used in experimental archaeology where visually documenting animal scavenging behaviour can be used to understand the movement of carcasses and individual bones. Results suggest that traditional zooarchaeological analyses may not be accurate indicators of hunted versus scavenged prey in archaeological faunal assemblages. Moreover, they most certainly fail to document the entire suite of animals scavenging a carcass. These implications are discussed with particular reference to the ability to definitively ascertain the role of humans in the megafaunal extinction debate in Australia.     

Stability of phytoliths in the archaeological record: a dissolution study of modern and fossil phytoliths

Opaline phytoliths are important microfossils used in archaeological and ecological research. Relatively little is known about the stability of phytoliths after burial. Under alkaline pH conditions they can dissolve, and mechanical disturbances can cause a loss of their more delicate appendages. Here we present an experimental study of phytolith stability (combination of solubility and abrasion). Modern and fossil phytoliths were extracted from wheat using new methods to minimize dissolution, and by burning in an oven. These assemblages were placed in a solution buffered to pH 10 and maintained under constant temperature and shaking conditions. The silicon concentrations in the solution were monitored once a week for 5 weeks. The phytolith morphologies in each assemblage were determined at the outset of the experiment and after 5 weeks. The results show that there are differences in stability between various assemblages. Modern inflorescence wheat phytolith assemblages are more unstable than those from leaves/stems. Burnt assemblages are less stable than unburnt assemblages, and a fossil phytolith assemblage about 3000 years old is more stable than the modern wheat assemblages. The results also show that individual phytolith morphotypes have different stabilities, and as a result of dissolution and abrasion, some morphotypes may resemble others. This study further shows that archaeological and/or paleo-environmental interpretation of phytolith assemblages may change with the assemblage’s state of preservation.     

From the modern to the archaeological: starch grains from millets and their wild relatives in China

Starch grains from 31 modern samples of millets derived from the seeds of 7 species within the genus Setaria and 2 species within the genus Panicum were analyzed to determine diagnostic morphological characteristics. Ancient starch grains recovered from a sample of broomcorn millet (Panicum miliaceum) excavated from the Cishan site (10.0-7.6 cal yr BP) in the North China Plain were then subjected to the same analyses to determine the differences in morphologies, if any, between modern and ancient samples. The data indicate that morphological features, and particularly surface and fissure features, will allow for solid identifications of ancient millet starches, while size classes will be helpful, but will not be dependable taxonomic indicators.     

The phytolith archaeological record: strengths and weaknesses evaluated based on a quantitative modern reference collection from Greece

The phytolith record from archaeological strata is a powerful tool for reconstructing aspects of past human behaviour and ecology. Considerable insights into the problems and potentials of this record can be obtained by studying phytoliths in modern plants. We prepared a phytolith reference collection of modern plants mostly from northern Greece that includes quantitative information on phytolith concentrations (number of phytoliths per gram dry organic material) and morphological assemblages. Here we analyse this reference collection with the aim of evaluating the strengths and weaknesses of the archaeological phytolith record. The reference collection comprises 62 different plant taxa. Of them, 28 are trees, 1 conifer, 10 shrubs and 1 herb, 3 domesticated annual legumes and 19 monocotyledons. We demonstrate quantitatively the extent to which woody species, legumes and fruits of dicots contribute only small amounts of phytoliths to the sediments per unit tissue dry weight, while leaves of trees and shrubs produce significant amounts of phytoliths and grasses are prolific phytolith producers. We compare the data of this reference collection with a similar reference collection from another Mediterranean ecosystem (Israel). The comparison indicates that some aspects of phytolith production are probably genetically controlled, whereas others are environmentally controlled. We note that despite the fact that woody species produce few phytoliths per gram of tissue, their record can be most informative when taking into account other properties of the sediments. We also note that jigsaw puzzle-shaped phytoliths normally form in plants that grow in humid conditions, but may form in arid environments when the plants are irrigated. This study clearly shows the extent to which some plants can be under-represented and others over-represented in the phytolith record. Knowing the extent of this bias can greatly improve our interpretation of the phytolith record.     

Fluvial transport of bovid long bones fragmented by the feeding activities of hominins and carnivores

This study explores the hydraulic transportability of bovid long bone fragments created through hominin and carnivore carcass consumption in order to determine the effect of fluvial transport on the incidences of hominin- and carnivore-induced bone surface modifications. Transportability was determined using an oval race track flume and 311 long bone fragments from modern control collections of hominin- and carnivore-modified bone. Results show that the fluvial transport of long bone fragments is predicted by animal size class and bone specimen size, as measured by maximum cortical thickness, maximum length, and maximum width. All of these variables can be measured on fossil specimens. Long bone portion (midshaft, near-epiphysis, and epiphysis) does not affect transport and hydraulic transport does not substantially modify the incidences of tooth, percussion, and cut marking in transported or lag assemblages in low energy fluvial environments. Implications of this study are: 1) animal size classes, and cortical thickness, length, and width of long bone fragments can be used to identify fluvial winnowing in fossil assemblages; 2) analyses concerning the relative timing of hominin and carnivore carcass consumption based on the proportions of long bone fragments bearing tooth, percussion, or cut marks can be meaningfully applied to fossil assemblages deposited in low-energy fluvial environments.     

Contamination of archaeological deposits by seeds of modern origin with particular reference to the use of flotation machines

Modern contamination would seem to be of widespread occurrence on archaeological sites in Britain. It is particularly noticeable when recovery is increased by the use of a flotation machine. Sources of contamination and methods of distinguishing modern and ancient seeds are discussed. It should often be possible largely to discount the recent component providing that a certain amount of consideration is given to the problem in relation to a particular site, although there are still some areas requiring further research.     

Amplification and sequencing of Trichuris trichiura ancient DNA extracted from archaeological sediments

Despite high prevalence of Trichuris trichiura infection, PCR-based analysis on T. trichiura from archaeological samples has not been established so far. In the present study, we sought to perform PCR-based amplification of T. trichiura aDNA using the sediments from medieval tomb of Korea. The presence of Trichuris eggs were first detected by microscopic observation; then confirmed by PCR-based aDNA analysis. Obtained sequence showed 100% homology to that of the small subunit ribosomal RNA (SSUrRNA) gene of T. trichiura but distinct from that of other Trichuris species. PCR-based aDNA analysis in this study can serve as effective method to confirm the presence of T. trichiura eggs in the soils or coprolites collected from archaeological sites.     

Interpreting the expansion of sea fishing in medieval Europe using stable isotope analysis of archaeological cod bones

Archaeological fish bones reveal increases in marine fish utilisation in Northern and Western Europe beginning in the 10th and 11th centuries AD. We use stable isotope signatures from 300 archaeological cod (Gadus morhua) bones to determine whether this sea fishing revolution resulted from increased local fishing or the introduction of preserved fish transported from distant waters such as Arctic Norway, Iceland and/or the Northern Isles of Scotland (Orkney and Shetland). Results from 12 settlements in England and Flanders (Belgium) indicate that catches were initially local. Between the 9th and 12th centuries most bones represented fish from the southern North Sea. Conversely, by the 13th to 14th centuries demand was increasingly met through long distance transport – signalling the onset of the globalisation of commercial fisheries and suggesting that cities such as London quickly outgrew the capacity of local fish supplies.     

Evidence of physico–chemical and isotopic modifications in archaeological bones during controlled acid etching

It has been repeatedly shown that palaeoecological inferences from the elemental and isotopic content of carbonate hydroxylapatite of fossil teeth and bones are unrecoverable without removing diagenetic overprinting by chemical pretreatments. Such pretreatments may in turn cause modification of the biogenic signature. In this paper, we focus upon optimal removal of Ca–bearing carbonates (mainly calcite). In order to control the progress with time of calcite dissolution, we perform leaching under vacuum, and we monitor the evolution of the pH, pCO₂, δ¹³C of released CO₂, %C, δ¹³C and δ¹⁸O of the remaining mineral. For a set of different Quaternary bones and teeth, mass and isotopic balances indicate that 1 hour at most is necessary for complete dissolution of calcite with an optimal conservation of carbonate hydroxylapatite. Long–lasting experiments lead to a fractionation of hydroxylapatite ¹⁸O/¹⁶O carbonates.     

The Geoff Egan Memorial Lecture 2011 Artefacts,art and artifice: reconsidering iconographic sources for archaeological objects in early modern Europe

Abstract

This paper reviews a key dynamic in post-medieval archaeology, that is, the relationship between artefacts and images, and in particular the questions raised in the study of historic domestic material culture depicted in contemporaneous painting and prints. Both media underwent a major transformation from c. 1400. Two main groups of pictorial art containing domestic material culture are reviewed, namely pre- and post-Reformation art in the Netherlands and Germany and genre paintings of the Dutch Golden Age. The historical iconographic record may shed a potentially rich qualitative light onto the quantitative archaeological patterning. Excavations at Duisburg in the Lower Rhineland are selected as a rich source of archaeological correspondence.     

Privatising the public past: The economics of archaeological heritage management

Resumen Los yacimientos prehispánicos de Ca?ada de la Virgen y Teotihuacán, en Méjico, se hayan en el centro de una contienda que mantienen actualmente la arqueología pública, el estado y los intereses privados. Las leyes que protegen el patrimonio cultural de México están siendo pasadas por alto por las políticas de privatización que imponen un valor económico a los yacimientos arqueológicos argumentando que deben aportar un beneficio económico. Las obligaciones de los gobiernos nacionales hacia los yacimientos arqueológicos están siendo socavadas a medida que aumenta el riesgo de privatización de los yacimientos. El público se halla cada vez más desamparado cuando el gobierno, que custodia el patrimonio arqueológico, pone el pasado a la venta. Como evidencian los conflictos de Ca?ada de la Virgen y Teotihuacán estos temas van más allá de lo local, ya que afectan a la globalidad. Los arqueólogos, responsables de proteger el pasado, deben desarrollar una estrategia para frenar esta tendencia, basándose en un mensaje claramente articulado que transmita la urgencia de la crisis que amenaza a los yacimientos arqueológicos.

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Résumé Les sites pré-hispaniques du Ca?ada de la Virgen et Teotihuacán au Mexique sont au centre d'une lutte continuelle entre l'archéologie publique, l'état et les intérêts privés. Les lois protégeant l'héritage culturel du Mexique sont détournées par des programmes de privatisation qui imposent une valeur économique sur les sites archéologiques, avec pour but de réaliser un profit financier. Les devoirs des gouvernements envers les sites archéologiques sont sapés alors que les sites sont de plus en plus en plus abandonnés aux aléas des développeurs privés. Le public perd ses droits de concession lorsque les gouvernements, agissant en tant que gardiens du patrimoine culturel permenttent la vente du passé. Les conflits du Ca?ada de la Virgen et Teotihuacán démontrent bien que ces problèmes vont au-delà de la communauté locale à la communauté mondiale. Les archéologues à qui il est donné de protéger le passé doivent développer une stratégie pour aller à l'encontre de ces tendances, stratégie basée sur un message clair portant sur l'urgence de la crise qui menace les sites archéologiques. De nos jours, les sites archéologiques encourent de plus en plus de risques aux mains des gouvernments. Les programmes économiques de privatisation menacent la perte des droits du public sur son propre passé. Ce passé est un capital symbolique pour le public. Pourtant, c'est le gouvernement qui profite de l'échange de ce capital symbolique contre un capital économique. Cettecommunication illustre deux études récentes émanant du Mexique où ont lieu de tels échanges. L'étude de ces cas se termine par un appel aux archéologues pour travailler plus activement avec le peuple en vue de protéger le passé. *** DIRECT SUPPORT *** A00U1004 00005

     

Incremental banding in dental cementum: Methods of preparation for teeth from archaeological sites and for modern comparative specimens

Analysis of incremental banding in dental cementum is a well-established means of determining the age and season of death of wild mammals. The dental cementum of domesticated mammals likewise can indicate age and season of death. Methods of preparation applicable to archaeological teeth differ from those used for modern specimens, however, and this paper describes two methods that have given excellent imaging on teeth of Bos taurus; one for modern teeth and the other for teeth from archaeological sites.     

The signs of the sacred: Identifying shamans using archaeological evidence

Anthropologists have determined that shamanism is a robust cross-cultural pattern, but they still have many methodological and theoretical issues to resolve. Central to archaeological religious studies is the need to develop a general and rigorous methodology for identifying the presence and structure of shamanism. This discussion begins by discussing shamans as a polythetic class and proposes that shamans and priests as they are commonly defined do not represent dichotomous religious structures, but rather reflect two ends of a continuum. The paper then presents a methodology for identifying and studying shamanism based on cross-cultural regularities in shamanic tools (sacra) and shamanic experiences. The methodology is then applied to the Casas Grandes region and Pottery Mound, both from the North American Southwest, and indicates that shamanic ritual was likely present during the late prehistoric occupation of the region.     

Port Royal, Jamaica: The archaeological problems and potential

In September 1968, one of the authors (P. Mayes), having been appointed Head of Mission by the British Ministry of Overseas Development to act as advisor to the Jamaica National Trust Commission, made recommendations which formed the basis for the establishment of the Port Royal Project. The Project is concerned with the excavation, conservation and presentation of 17th century Port Royal, which was founded in 1655 and destroyed by an earthquake in 1692 (see Fig. 1). For the purposes of archaeology the area was divided into three: the Archaeological-Historical Reserve, encompassing the protected underwater area and lands currently occupied by government facilities at the west end of Port Royal; the area in the centre of Port Royal which is protected archaeologically by modern housing and the area at the east end of Port Royal in which it was proposed that commercial expansion should be allowed on land held on lease from the Jamaican government. Work began early in 1969 in a section of this last area, which was threatened, at that time, by the construction of an hotel. This area was part of the shoal water section of sunken Port Royal (see below and Fig. 2). Since that date excavation headquarters and conservation laboratories have been established in the old naval hospital and the construction of a major museum, the first phase of the presentation programme, has begun.