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Testing the endurance of prehistoric adornments: Raw materials from the aquatic environment

Posted on August 11, 2016 by ARCAS

Publication date: June 2016Source:Journal of Archaeological Science, Volume 70 Author(s): Monica MărgăritRaw materials deriving from the aquatic environment were systematically used for personal ornamentation by modern humans throughout their entire history. In this study we analyse three types of raw materials: Lithoglyphus sp. shells, Unio sp. valves and Cyprinus carpio opercular bones. The central purpose of this paper is to initiate a database of the way in which wear develops according to the system of attachment and the longevity of use. In order to identify the costs invested in the manufacturing of these types of items, both from the point of view of time and effort, an experimental programme has been developed, which permits the recording of all the variables (means of gathering the raw material, technological stages, time recorded for each operation, and tools used). Furthermore, it was set the task of wearing the beads experimentally processed, as adornments, for two years, and of periodically evaluating the perforation and the surface of the pieces under a microscope. Moreover, observations made on archaeological specimens were compared to experimental replicas. The archaeological assemblages from the Romanian Neolithic were used as a case study to illustrate the relevance of the results.

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Impact of grinding technology on bilateral asymmetry in muscle activity of the upper limb

Posted on August 11, 2016 by ARCAS

Publication date: August 2016Source:Journal of Archaeological Science, Volume 72 Author(s): Vladimír Sládek, Martin Hora, Kristýna Farkašová, Thomas R. RocekThis paper proposes and tests the idea that a major change in technology associated with the grinding of cereals may account for changes in asymmetry in the upper arms of women in the Neolithic through Iron Age across a large area of Europe. It has been observed that bilateral asymmetry in humeral strength (i.e., polar section modulus) decreased to near zero in early agricultural females, but increased again during the Iron Age. These changes in asymmetry in females have been interpreted as the direct consequence of the adoption of the saddle quern at the start of the Neolithic and its subsequent replacement by the rotary quern in the Iron Age. To test the impact of these alternative cereal grinding methods, we tested the efficiency of saddle and rotary quern grinding with 16 female volunteers and the effect of grinding on muscle activity of the upper limb with 20 female volunteers. We used electromyography to measure muscle activity in the pectoralis, deltoideus, infraspinatus and triceps muscles and adjusted muscle activity for efficiency and muscle size. Saddle quern grinding was 4.3 times less efficient than rotary quern grinding and produced a significantly higher amount of coarse- and middle-grained flour but a significantly lower amount of very fine grained flour than rotary quern grinding. Saddle quern grinding showed symmetrical muscle activity in all four studied muscles, whereas rotary quern grinding yielded consistent directional asymmetry in a majority of muscles even during bimanual rotation. Saddle quern grinding required about twice as much muscle activity per kg of grain when adjusted for muscle size than rotary quern grinding. Our results support the view that saddle quern grinding may have played a major role in the decrease in directional asymmetry in humeral strength in early agricultural females and that the adoption of the rotary quern during the Iron Age may have increased humeral directional asymmetry mainly because of increased asymmetrical loading and the reduced time needed for grinding in favor of other manipulative tasks.

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Distinguishing offshore bird hunting from beach scavenging in archaeological contexts: The value of modern beach surveys

Posted on August 11, 2016 by ARCAS

Publication date: June 2016Source:Journal of Archaeological Science, Volume 70 Author(s): Kristine M. Bovy, Jessica E. Watson, Jane Dolliver, Julia K. ParrishDetermining whether seabirds recovered from coastal shell middens were obtained via active hunting or scavenging of beached carcasses is a challenge for archaeologists. Traditional methods have included analyzing skeletal part frequencies, abundance, age profiles, and contextual evidence. The assumption has been made, based on limited biological data, that an assemblage of carcasses scavenged from the beach will have more wing elements, and fewer legs and heads. Few studies, however, have embraced modern beaching data to verify this assumption and assess the potential faunal resources available for scavenging. We analyze the skeletal part representation of modern beached birds observed by the Coastal Observation and Seabird Survey Team (COASST), comparing the COASST dataset to two idealized hypotheses used by archaeologists: the human scavenging hypothesis (wings only are recovered, while heads and legs are absent) and the human hunting hypothesis (all body parts are found in equal proportions). Finally, we apply these results to analysis of the bird remains from the Minard site (45-GH-15), a late Holocene coastal site in Grays Harbor, Washington. We find that contemporary beached bird data are closer to replicating the human hunting hypothesis as compared to the human scavenging hypothesis, as >75% of the 19,599 carcasses in the COASST dataset had a combination of head, wings and legs. This result, and the similarity in taxonomic distribution between our contemporary beached bird data and Minard assemblage, suggests that indigenous peoples may have used scavenging as a viable means of resource acquisition in the past. Use of contemporaneous beached bird data may provide zooarchaeology with a statistically defensible baseline of information on the phenology, abundance and condition of bird carcasses.

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Finding Harappan seal carvers: An operational sequence approach to identifying people in the past

Posted on August 11, 2016 by ARCAS

Publication date: August 2016Source:Journal of Archaeological Science, Volume 72 Author(s): Adam S. GreenThe engravings on Harappan stamp seals allow the identification of particular artisans in the past. Toward this end, this article employs three-dimensional optical microscopy of stamp seal engravings to provide a non-destructive source of data for reconstructing specific sequences of action. Comparing these operational sequences (chaînes opératoire) reveals similarities that probably resulted from past production events undertaken by differing individual carvers. Applying this high resolution approach to a sample of five unicorn stamp seals from Mohenjo-daro (2600–1900 B.C.) strongly suggests that their engravings are the work of three artisans. The differences in their operational sequences provide preliminary insights into the boundaries between the communities of practice that produced Harappan seals. This approach can extend archaeological inquiry into many aspects of the social conditions in which seal production occurred. A close analysis of operational sequences reveals how the traces of specific actions, faithfully recorded in stone, can help us find people in the past whose specific activities would otherwise lie outside of scholarly investigation.

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Xiongnu burial complex: A study of ancient textiles from the 22nd Noin-Ula barrow (Mongolia, first century AD)

Posted on August 11, 2016 by ARCAS

Publication date: June 2016Source:Journal of Archaeological Science, Volume 70 Author(s): Elena Karpova, Vladimir Vasiliev, Victor Mamatyuk, Natalia Polosmak, Lyudmila KundoThe collection of textiles from Xiongnu burial was obtained in the recent years as a result of research of the Russian-Mongolian expedition led by N. Polosmak. This collection is a unique source of the different types of information. Xiongnu throughout their long history controlled the Central Asia regions of the Silk Road, by which many and varied products, including textiles and wool, were brought to China from the west. The woolen fabrics and textiles of high quality were found in the Xiongnu noble burials located in the mountains of Mongolia. An analysis of their dyes composition by high performance liquid chromatography (HPLC) showed that the woolen fabrics were dyed with plant and insect dyestuffs. Each sample analyzed was dyed with a set of dyestuffs that indicates that dyers had not only the necessary and various dyes, but possessed highly developed craftsmanship of dyeing. Based on the results of this research it can be proposed that the dyeing of the woolen textiles found in the graves of the Xiongnu nobility was carried out in the manufactories of the Mediterranean, known for their fabrics dyeing culture. Numerous Chinese-made silk fabrics were dyed with traditional Han epoch plant dyes – indigo and Indian madder. Dyes composition of the silk textile fundamentally differs from dyes of the woolen fabrics by the absence of dyestuffs of insect origin.

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Evaluation of chronological changes in bone fractures and age-related bone loss: A test case from Poland

Posted on August 11, 2016 by ARCAS

Publication date: August 2016Source:Journal of Archaeological Science, Volume 72 Author(s): Anna E. Spinek, Wiesław Lorkiewicz, Joanna Mietlińska, Ewa Sewerynek, Arkadiusz Kłys, David Caramelli, Elżbieta Żądzińska

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On graphical representations of similarity in geo-temporal frequency data

Posted on August 11, 2016 by ARCAS

Publication date: August 2016Source:Journal of Archaeological Science, Volume 72 Author(s): Daniel Weidele, Mereke van Garderen, Mark Golitko, Gary M. Feinman, Ulrik BrandesIts focus on dependencies and patterns in relational data makes network science a promising addition to the analytic toolbox in archaeology. Despite its tradition in a number of other fields, however, the methodology of network science is only in development and its scope and proper usage are subject to debate. We argue that the historical linkage with graph theory and limitations in commonly available software form an obstacle to leveraging the full potential of network methods. This is illustrated via replication of a study of Maya obsidian (Golitko et al. Antiquity, 2012), in which it seemed necessary to discard detailed information in order to represent data in networks suitable for further processing. We propose means to avoid such information loss by using methods capable of handling valued rather than binarized data. The resulting representations corroborate previous conclusions but are more reliable and thus justify a more detailed interpretation of shifting supply routes as an underlying process contributing to the collapse of Maya urban centers. Some general conclusions for the use of network science in archaeology are offered.

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Airborne laser scanning as a method for exploring long-term socio-ecological dynamics in Cambodia

Posted on August 11, 2016 by ARCAS

Publication date: Available online 13 June 2016Source:Journal of Archaeological Science Author(s): Damian EvansEarly Khmer societies developed extensive settlement complexes that were largely made of non-durable materials. These fragile urban areas perished many centuries ago, and thus a century and a half of scholarly research has focussed on the more durable components of Khmer culture, in particular the famous temples and the texts and works of art that are normally found within them. In recent years however there has been a considerable effort to broaden the perspective beyond conventional approaches to Khmer history and archaeology. Remarkable advances have been made in the domain of remote sensing and archaeological mapping, including the application of advanced geospatial techniques such as airborne laser scanning within studies of heritage landscapes at Angkor and beyond. This article describes the most recent applications of the technology in Cambodia, including the results of a newly-completed campaign of airborne laser scanning in 2015—the most extensive acquisition ever undertaken by an archaeological project—and underscores the importance of using these methods as part of a problem-oriented research program that speaks to broader issues within history and archaeology.

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Assessing 3D metric data of digital surface models for extracting archaeological data from archive stereo-aerial photographs

Posted on August 11, 2016 by ARCAS

Publication date: August 2016Source:Journal of Archaeological Science, Volume 72 Author(s): Heather Papworth, Andrew Ford, Kate Welham, David ThackrayArchaeological remains are under increasing threat of attrition from natural processes and the continued mechanisation of anthropogenic activities. This research analyses the ability of digital photogrammetry software to reconstruct extant, damaged, and destroyed archaeological earthworks from archive stereo-aerial photographs. Case studies of Flower’s Barrow and Eggardon hillforts, both situated in Dorset, UK, are examined using a range of imagery dating from the 1940s to 2010. Specialist photogrammetric software SocetGXP® is used to extract digital surface models, and the results compared with airborne and terrestrial laser scanning data to assess their accuracy. Global summary statistics and spatial autocorrelation techniques are used to examine error scales and distributions. Extracted earthwork profiles are compared to both current and historical surveys of each study site. The results demonstrate that metric information relating to earthwork form can be successfully obtained from archival photography. In some instances, these data out-perform airborne laser scanning in the provision of digital surface models with minimal error. The role of archival photography in regaining metric data from upstanding archaeology and the consequent place for this approach to impact heritage management strategies is demonstrated.

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Geoarchaeology of urban space in tropical island environments: Songo Mnara, Tanzania

Posted on August 11, 2016 by ARCAS

Publication date: Available online 20 June 2016Source:Journal of Archaeological Science Author(s): Federica Sulas, Jeffrey Fleisher, Stephanie Wynne-JonesPast urban settlements in tropical island environments offer particularly challenging sites for mainstream archaeology. Often associated with shallow stratigraphic sequences, archaeological sediments and soils in these sites are strongly influenced by local geology and seawater. This study discusses the advantages and challenges of developing an integrated geoarchaeological programme to examine the use of space at the Swahili stonetown of Songo Mnara Island, Tanzania. This exceptionally well preserved site, occupied for less than two centuries (C14th–16th AD), comprises a complex urban layout with stone-built houses, wattle-and-daub structures, funerary complexes, activity areas such as wells, and open areas. The programme has combined geoarchaeological (soil macro- and micromorphology, ICP-AES, pH, EC), geophysical (magnetic susceptibility) and archaeological (large excavations, test trenches, artefact distribution mapping) techniques to investigate the use of space across different contexts. Initial geoarchaeological prospection and opportunistic soil sampling have allowed framing of the island’s environmental settings and archaeological deposits as well as outlining open spaces in between buildings. Subsequent research applied a systematic sampling strategy to map geochemical and artefact distributions in conjunction with context-specific soil micromorphology. The results provide a means to map out the impact of occupation across the site as well as to differentiate between open, roofed and unroofed spaces. ICP-AES results, for example, demonstrate that measurements of Ca, Mg, P, S and Sr levels can help discriminate occupation/activity areas in tropical island environments. They also indicate that the depletion of certain elements (e.g. Na, K, and Ni) should be considered as a means of differentiating between roofed and unroofed spaces. The combination of different methodologies demonstrates the importance of addressing discrepancies as well as correlations between multiple datasets for deciphering features within urban spaces in tropical environments and interpreting ancient activities that occurred within them.

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