News

Materials analyses of pyrotechnological objects from LBA Tiryns, Greece, by means of Laser-Induced Breakdown Spectroscopy (LIBS): Results and a critical assessment of the method

Posted on June 23, 2017 by ARCAS

Publication date: July 2017Source:Journal of Archaeological Science, Volume 83 Author(s): Ann Brysbaert, Panayiotis Siozos, Melissa Vetters, Aggelos Philippidis, Demetrios AnglosLaser-Induced Breakdown Spectroscopy (LIBS) was used in the investigation of pyrotechnological materials (metal and ceramic items, glass-based objects, plaster-based materials) from several Late Bronze Age workshop and activity area contexts at Tiryns, Greece. The use of a portable instrument, which could be brought into the study place where all objects were housed, was crucial in order to establish the elemental content or verify the material composition of almost all materials analysed. In almost all cases, the LIBS analyses led to the preliminary identification of the materials investigated. In most cases, the results sufficed to confirm earlier research carried out or was in agreement with similar analyses published in the literature. The analyses demonstrate that the micro-invasive LIBS technique provides useful preliminary elemental characterization of most of the pyrotechnological materials while for some, additional work needs to be conducted for securing conclusive results. Essentially, the portability and compactness of the instrumentation enable its use in any workspace with a solid desk, light and electricity access which makes this technique very attractive for obtaining preliminary elementary results. While the technique remains limited by spot analyses it does open up an immense array of possibilities for routine characterization or speedy screening of different types of artefacts in any storage or museum context. These important methodological and scientific findings are considered prerequisite steps leading towards and aiding in responsible sampling strategies for further analyses.

Read more

Diet reconstructed from an analysis of plant microfossils in human dental calculus from the Bronze Age site of Shilinggang, southwestern China

Posted on June 23, 2017 by ARCAS

Publication date: July 2017Source:Journal of Archaeological Science, Volume 83 Author(s): Naimeng Zhang, Guanghui Dong, Xiaoyan Yang, Xinxin Zuo, Lihong Kang, Lele Ren, Honggao Liu, Hu Li, Rui Min, Xu Liu, Dongju Zhang, Fahu ChenThe extracted microfossils from the dental calculus of ancient teeth are a new form of archaeological evidence which can provide direct information on the plant diet of a population. Here, we present the results of analyses of starch grains and phytoliths trapped in the dental calculus of humans who occupied the Bronze Age site of Shilinggang (∼2500 cal yr BP) in Yunnan Province, southwestern China. The results demonstrate that the inhabitants consumed a wide range of plants, including rice, millet, and palms, together with other food plants which have not previously been detected in Yunnan. The discovery of various underground storage organs (USOs; tubers, roots, bulbs, and rhizomes) and acorns complements the application of conventional macrofossil and isotope studies to understand the diet of the Bronze Age human population of Yunnan. The wide variety of plant foods consumed suggests that the inhabitants adopted a broad-spectrum strategy of gathering food and cultivating crops in northwest Yunnan Province in the late Bronze Age at a time when agricultural societies were developed in the central plains of China.

Read more

Fields of conflict: A political ecology approach to land and social transformation in the colonial Andes (Cuzco, Peru)

Posted on June 21, 2017 by ARCAS

Publication date: Available online 20 June 2017Source:Journal of Archaeological Science Author(s): Steve Kosiba, R. Alexander HunterThis paper presents a political ecological framework for Geographic Information Systems (GIS) analysis to examine changes in agricultural land in ancient and early historical contexts. It raises several issues pertinent to archaeological epistemology and science, with a particular focus on the limitations of using fixed data categories to examine fluid environmental processes and ecological relationships. The paper draws on political ecological theories that define land as a social process, moving beyond economic conceptions of agricultural land that rest on productive capacity and phenomenological theories that examine the physical environment in terms of cultural perception. It combines qualitative (archival) and quantitative (archaeological) data in a GIS methodology to address how linked changes in physical land attributes and labor routines can affect regional ecologies and foment social conflict. In empirical terms, the paper traces changes from maize to wheat fields during Spanish colonization (ca. 1533-1670) in Ollantaytambo, Peru, a monumental Inca town near the capital of their empire. It reveals how ecological transformations that occurred during this century–widespread deaths throughout, abandonment of Inca fields, and introduction of European biota–in part framed conflicts between Andean people and the colonial regime, and also empowered local farmers to claim land in previously undeveloped areas.

Read more

Spatial thinking in archaeology: Is GIS the answer?

Posted on June 20, 2017 by ARCAS

Publication date: Available online 17 June 2017Source:Journal of Archaeological Science Author(s): Gary Lock, John PouncettBeing human embodies understandings of space and spatial relationships which are embedded within the material world and are underpinned by complex frameworks of knowledge and experience. Just as this applied to people living in the past, so it applies to those of us concerned with trying to understand those past lives through the archaeological record. Most, if not all, archaeological material has a spatial component and it is not surprising, therefore, that spatial thinking has been central within archaeological endeavour since the beginnings of the discipline. Specific forms of spatial thinking have changed with developing theory and methods and with changing analytical and technological opportunities resulting in the rich variety of approaches available to us today. Within this development, the rapid adoption of Geographic Information Systems (GIS) technology since the early 1990s has had a major impact on archaeology and related disciplines and its use is now almost taken for granted. Although the use of GIS in archaeology has always been, and still is contentious at the theoretical level, the attractions of the technology are usually seen to outweigh any restrictions or disadvantages. In this paper we situate the use of GIS, including the papers in this volume, within the wider arena of spatial thinking in archaeology in an attempt to assess the impact that this technology has had on how we think spatially.

Read more

Charred honeycombs discovered in Iron Age Northern Italy. A new light on boat beekeeping and bee pollination in pre-modern world

Posted on June 14, 2017 by ARCAS

Publication date: July 2017Source:Journal of Archaeological Science, Volume 83 Author(s): Lorenzo Castellano, Cesare Ravazzi, Giulia Furlanetto, Roberta Pini, Francesco Saliu, Marina Lasagni, Marco Orlandi, Renata Perego, Ilaria Degano, Franco Valoti, Raffaele C. de Marinis, Stefania Casini, Tommaso Quirino, Marta RapiIn the ancient world beeswax and honey were of crucial importance not only for nutrition, but also for a range of activities including various artisanal practices. A rich body of iconographic and literary evidence has proven very informative, but archaeological data are strongly underrepresented in studies on ancient beekeeping. A multidisciplinary excavation project of the Etruscan trade center of Forcello near Bagnolo San Vito (Mantua province), led to the discovery of charred honeycombs in a workshop dated to 510-495 BCE. Morphoscopical, palynological and chemical analyses (IR, LC-MS, GC-MS) were conducted on these honeycombs and their associated materials (bee-breads and a mixture of melted honeycombs) in order to reconstruct beekeeping practices and the local environment. Palynological data indicate that honeybees were feeding on plants from both aquatic and ruderal landscapes. The palynological record from the bee-breads suggests the practice of itinerant beekeeping along rivers, an activity described by Pliny the Elder (Natural History, XXI.43.73) a few centuries later in relation to the town of Ostiglia (Mantua province) ca. 20 km downstream the investigated site. Hence, confirming the historical source, beekeeping in Iron Age Northern Italy appears to be characterized by a remarkably high degree of specialization. In addition, the pollen content of the melted honeycombs provides evidence for an unprecedented Vitis vinifera (grapevine) honey. The pollination syndrome suggests that bees fed on nectar of pre-domesticated or early-domesticated varieties of Vitis vinifera, confirming the archaeobotanical record of pips from Iron Age Northern Italy.

Read more

A GIS of affordances: Movement and visibility at a planned colonial town in highland Peru

Posted on June 13, 2017 by ARCAS

Publication date: Available online 12 June 2017Source:Journal of Archaeological Science Author(s): Steven A. Wernke, Lauren E. Kohut, Abel TraslaviñaArchaeological GIS is moving towards increasingly detailed, embodied, multidimensional simulations and analyses of human experience in the past. Most of the emerging GIS research synthesizing spatial modeling and subject-centered approaches has been concerned with practices and perceptions of landscape. This paper tightens the analytical focus to the more intimate scale of a single settlement, combining models of movement and visual experience within a planned colonial town in highland Peru. Such a rendering is important, since controlling movement and visual experience were central to the colonial project that built this and other such towns in the Viceroyalty of Peru. This study centers on an exceptionally well-preserved, relict planned colonial town in highland Peru to investigate affordances of movement and visibility within it. Several GIS-based simulations and analytical techniques are brought together, including drone-based high resolution three dimensional modeling, spatial network analysis, walking models, and cumulative viewshed analysis, to simulate aggregate visual experience as people moved through the town. The results are suggestive of how the layout of the town specifically routed transit to facilitate the visual prominence of the church and original Inka plaza of the reducción, as well as the prominence of indigenous elite households. Both continuities and discontinuities of movement and visual experience relative to Inkaic and Spanish colonial spaces are evident. By extension, this paper also provides a pathway for quantitative and reproducible modeling of site-scale movement and visual affordances as dimensions of subject and community formation in other global contexts.

Read more

Modeling Métis mobility? Evaluating least cost paths and indigenous landscapes in the Canadian west

Posted on May 28, 2017 by ARCAS

Publication date: Available online 27 May 2017Source:Journal of Archaeological Science Author(s): Kisha SupernantGeographic Information Systems (GIS) analyses in archaeology have been criticized by archaeologists for being reductive, environmentally deterministic, and reproducing a disembodied experience of the landscape. However, research over the past 20 years has demonstrated the power of GIS data and analyses to explore complex social questions about past human experiences. Indigenous knowledges of landscapes have not often explicitly informed GIS analyses in archaeology, even though archaeologists and indigenous communities around the world are forging collaborative relationships. This paper proposes an integrated approach GIS-based least cost analysis, where Indigenous traditional knowledge, historical documentation, and archaeology can be brought together for a more nuanced and locally-grounded model of past landscapes. A case study from the movement of the Métis people of Canada is used to test typical models of cost path movement used in archaeology against known historic trails information, followed by a discussion of possible future applications of movement models and variables related to local Indigenous knowledge of current and past landscapes.

Read more

Echoing landscapes: Echolocation and the placement of rock art in the Central Mediterranean

Posted on May 28, 2017 by ARCAS

Publication date: July 2017Source:Journal of Archaeological Science, Volume 83 Author(s): Tommaso Mattioli, Angelo Farina, Enrico Armelloni, Philippe Hameau, Margarita Díaz-AndreuMany societies give special importance to places where echoes are generated, and often these places receive special treatment including the production of rock paintings in them. The identification of the exact places where echoes come from, or echolocation, is an ability only shared by a few individuals in each community. Unfortunately for archaeologists, however, their activity leaves no trace in the archaeological record. In this article we propose that the Ambisonics technique, a method developed in the field of acoustical physics, can be applied to identify the likely use of echolocation among societies for which no ethnographic information remains, such as most of those who lived in prehistoric Europe. A description of how this method has been applied in two case studies, the rock art landscapes of Baume Brune (Vaucluse, France) and Valle d’Ividoro (Puglia, Italy), is provided. In these two echoing areas only a few shelters were chosen to be painted with Schematic art, leaving around them many others undecorated. In the description of the fieldwork phase of the test, issues related to the sound source, the sound recorder, and spherical camera and how the Impulse Response (IR) measurement was made are discussed. The processed results indicate that there was a positive relationship between sound-reflecting surfaces and the location of rock art. This leads us to propose that in both areas there is a strong probability of echolocation having been employed by Neolithic people to select the shelters in which to produce rock art. The results obtained in our study also have wider implications in our understanding of how prehistoric peoples perceived the landscape in which they lived in, understood not only on the basis of tangible elements but, perhaps more importantly, because of intangible aspects such as sound and, in particular, echoes.

Read more

Visualising scales of process: Multi-scalar geoarchaeological investigations of microstratigraphy and diagenesis at hominin bearing sites in South African karst

Posted on May 25, 2017 by ARCAS

Publication date: July 2017Source:Journal of Archaeological Science, Volume 83 Author(s): Tara Edwards, Elle Grono, Andy I.R. Herries, Frank J. Brink, Ulrike Troitzsch, Tim Senden, Michael Turner, Aleese Barron, Lauren Prossor, Tim DenhamMulti-scalar geoarchaeological investigations were conducted on several samples of sediment (dolomite cave sediments, ferricrete ridge, speleothem, tufa and tufa cave sediments) from four early hominin fossil-bearing sites (Taung Type Site, Haasgat, Drimolen Main Quarry, Elandsfontein) in different South African karst environments. The study was designed to test the value of geoarchaeological techniques for identifying and characterising environments of deposition and diagenetic processes involved in site formation within different mediums and different karst environments. The traditional petrographic method is weighed against two relatively new methodological contributions to site formation and diagenesis: Computed Tomography (CT) and automated Quantitative Evaluation of Minerals using Energy Dispersive Spectroscopy (QEM-EDS), employing QEMSCAN® technology. An integrated micro-sampling approach is outlined for successful cross-correlation between techniques. The study demonstrates that different analyses vary in their ability to visualise different types of process – primary and secondary. Thin section petrography remains the ‘gold standard’ for analyses conducted at the micro-scale, while QEM-EDS and CT offer exciting potential to perform meso-scale analyses and are best utilised as complementary rather than alternative techniques to petrography.

Read more

Editorial Board

Posted on May 24, 2017 by ARCAS

Publication date: June 2017Source:Journal of Archaeological Science, Volume 82

Read more