Geochemical Characterization of Lapita Pottery Via Inductively Coupled Plasma–mass Spectrometry (ICP–MS)

We have obtained high‐resolution elemental data on Lapita ceramics (3200–2700 cal year bp ) from Fiji, Tonga and New Ireland using chemistry‐based inductively coupled plasma–mass spectrometry (ICP–MS). These data show clear elemental distinctions between Lapita pottery manufactured in Fiji, Tonga and New Ireland, and demonstrate significant elemental variation in Fijian ceramics collected from settlements in close proximity to one another. Therefore, we anticipate that ICP–MS will become an effective technique for tracking the transfer of Lapita pottery within and between different island groups in Oceania.     

An Assemblage of Collegiate Ceramics: Mid-Nineteenth Century Dining at Trinity Hall,Cambridge

A large assemblage of ceramics related to dining at Trinity Hall, in which many of the vessels were marked with the name and/or the crest of the college, was recovered during recent excavations undertaken at Newmarket Road, Cambridge. The material, which was produced c. 1845–77 and deposited c. 1877–80, indicates that three distinct dining services were employed by Trinity Hall at this time. In addition to shedding considerable light into dining at this mid- nineteenth century college, the assemblage also indicates how ceramics were employed to visually denote status differences within the college. Other material within the assemblage, allied with the location of its disposal, provides significant information on how the material moved between its contexts of use and deposition. This also allows insights into how such large assemblages may be categorized and interpreted.     

NEUTRON ACTIVATION ANALYSIS OF COLONIAL CERAMICS FROM SOUTHERN HIGHLAND ECUADOR*

Sixty‐one ceramic samples collected in Cuenca, Ecuador, were analysed by neutron activation analysis in an attempt to establish their elemental compositions. The bulk of the samples were manufactured in the region of Cuenca, with others imported from Quito in the northern highlands of Ecuador, from Panama Vieja in Panama, and from Seville in Spain. Relative to the Cuenca ceramics, the Spanish samples were separable primarily by their high Ca contents; the Panamanian ceramics by their high Cs contents; and the Quito ceramics by their high Na contents. The ceramics made within the region surrounding Cuenca are much more difficult to separate, with Ba and other elements being potentially important.     

Mineralogical analysis and provenancing of ancient ceramics using automated SEM-EDS analysis (QEMSCAN®): a pilot study on LB I pottery from Akrotiri,Thera

A wide range of existing mineralogical and geochemical methodologies such as optical microscopy, X-ray diffraction, manual scanning electron microscopy, ICP-MS and INAA have been utilised in the analysis of ancient ceramics, in attempts to elucidate patterns of regional trade and interaction. However, advances in automated scanning electron microscopy with linked energy dispersive spectrometers (SEM-EDS) have created the potential to offer a seamless combination of textural and mineralogical data based on the acquisition of energy dispersive spectra that has so far been unattainable with existing techniques. In this pilot study on pottery from the Cycladic Bronze Age site of Akrotiri (Thera), we have quantified the mineralogy of the ceramics based on automated SEM-EDS using QEMSCAN^® technology and imaged the textures of the ceramics through compositional mapping. Thirteen samples were analysed and, based upon the automated analysis, four groups of ceramic compositions are defined. These data are consistent with, but also refine, previous traditional petrographic examination of the ceramic samples, and enable the likely provenance of the raw materials used in the ceramic manufacture to be identified. This technique allows the acquisition of fully quantitative data, not only for the larger inclusions within the ceramics but also for the typically finer-grained groundmass/matrix, whilst also providing the overall texture of the ceramic.     

Bitumen in Early Ceramic Art: Bitumen‐Painted Ceramics From Late Neolithic Tell Sabi Abyad (Syria)*

The paper presents the results of a chemical analysis of black pigment used to decorate pottery from Late Neolithic Tell Sabi Abyad, northern Syria (c. 6100 cal bc ). The pigment appears to be bitumen. A comparison with known reference samples from modern locations of bituminous sources in the Near East suggests that the bitumen used to paint ceramics at Tell Sabi Abyad came from at least two different source areas in northern Iraq. The bitumen‐painted ceramics at Tell Sabi Abyad represent the earliest evidence attested so far of bitumen used as a pigment for pottery decoration.     

THOUGHTS ON THE UTILITY OF A BIVARIATE‐SPLITTING APPROACH TO OLMEC CERAMIC DATA INTERPRETATION*

A recently resolved debate centred on the interpretation of a major set of INAA data that was based on Olmec ceramics from Mexico. In an attempt to answer questions arising from the debate, this paper discusses the effect of numbers of samples chosen for data interpretation. It also presents interpretations of the ceramic data set based on a bivariate data‐splitting approach and compares the results of this with the multivariate analysis approaches employed by the initial publishers of the data.     

ON STATISTICAL APPROACHES TO THE STUDY OF CERAMIC ARTEFACTS USING GEOCHEMICAL AND PETROGRAPHIC DATA*

The scientific analysis of ceramics often has the aim of identifying groups of similar artefacts. Much published work focuses on analysis of data derived from geochemical or mineralogical techniques. The former is more likely to be subjected to quantitative statistical analysis. This paper examines some approaches to the statistical analysis of data arising from both kinds of techniques, including ‘mixed‐mode’ methods where both types of data are incorporated into analysis. The approaches are illustrated using data derived from 88 Late Bronze Age transport jars from Kommos, Crete. Results suggest that the mixed‐mode approach can provide additional insight into the data.     

Who are the People in my Neighborhood?: The “Contextual Fallacy” of Measuring Individual Context with Census Geographies

Scholars frequently use counts of populations aggregated into geographic units like census tracts to represent measures of neighborhood context. Decades of research confirm that variation in how individuals are aggregated into geographic units can dramatically alter analyses conducted with these units. While most researchers are aware of the problem, they have lacked the tools to determine its magnitude or its capacity to affect analytical results obtained using these contextual measures. Using confidential access to the complete 2010 U.S. Decennial Census, we can construct—for all persons in the U.S.—individual-specific contexts, which we group according to Census-assigned block, block group, and tract. We compare these individual-specific measures to the published statistics at each scale, and we then determine the degree to which published measures could be affected by how boundaries are drawn using a simple statistic, the standard deviation of individual context (SDIC). For three key measures (percent Black, percent Hispanic, and Entropy—a measure of ethno-racial diversity), we find that block-level Census statistics frequently contain a high degree of uncertainty meaning that they may not capture the actual context of individuals within them. More problematic, we uncover systematic spatial patterns in the uncertainty associated with contextual variables at all three scales.     

A SPECTROSCOPIC INVESTIGATION OF PIGMENT AND CERAMIC SAMPLES FROM COPÁN,HONDURAS*

A combination of micro‐Raman spectroscopy, micro‐infrared spectroscopy and SEM–EDX was employed to characterize decorative pigments on Classic Maya ceramics from Copán, Honduras. Variation in red paint mixtures was correlated with changing ceramic types and improvements in process and firing techniques. We have confirmed the use of specular hematite on Coner ceramics by the difference in intensities of Raman bands. Different compositions of brown paint were correlated with imported and local wares. The carbon‐iron composition of the ceramic type, Surlo Brown, was confirmed. By combining micro‐Raman analysis with micro‐ATR infrared and SEM–EDX, we have achieved a more comprehensive characterization of the paint mixtures. These spectroscopic techniques can be used non‐destructively on raw samples as a rapid confirmation of ceramic type.     

Determining Olmec maize use through bulk stable carbon isotope analysis

Bulk stable carbon isotope analysis on absorbed organic residues in ceramics can be an effective method for discerning patterns of maize use when the ceramics come from relatively uniform archaeological contexts. The bulk stable carbon isotope method is faster and less costly than the more commonly used compound-specific stable carbon isotope analysis. Moreover, the bulk stable carbon isotope method can determine the presence of C4 plant carbon in samples in which organic compounds have degraded. Bulk stable carbon isotope analysis was used to discern patterns of maize (Zea mays mays) use among a sample of 24 ceramic sherds from an Early Franco Period feasting deposit (ca. cal 650 B.C.) at the Olmec site of San Andrés, La Venta, Tabasco, Mexico. A comparison of the δ 13C results of different categories of ceramics showed that proportionally more maize was used in luxury beverage service wares than in utilitarian vessels, suggesting that maize-based beverages were prominent in this probable elite feasting episode.     

Audit Bodies: Embodied Participation,Disability Universalism,and Accessibility in India

Abstract: In this article we think critically about the role of the “access audit” in creating new forms of embodied participation, experiential and technical expertise, and imaginaries of what the modern Indian city should be. We analyze how disability activists make claims about the relationship between subjective bodily experiences and bodies of objective knowledge. We also explore the emergence of a professional access audit apparatus focused on technical standards. As neither volunteer nor professional access audits result in significant architectural or structural changes, we are interested in what other effects and affects these audits produce and what discursive authority claims of inaccessibility have. This article analyzes the practice of conducting “access audits” by lay and professional disability rights activists and organizations in urban India. We argue that access audits are overly focused and that they have limited impact. In overly focusing on physical and technical access, auditors miss the importance of programmatic and policy interventions as well as the need for a more collective contentious politics. Our research illustrates that the contested field of access auditing appears to prevent a unified disability coalition from forming. In addition, it is important for auditors to think critically about the concept of “access” and ask what social, economic, and political processes are embedded within the concept.     

The architecture of power: François Mitterrand’s Grands Travaux revisited 1

Building on earlier research, this paper proposes a more refined analysis of how the main decision‐making processes pertaining to the grands travaux were established in the very early stages. Informed by consultation of official archival sources to which access was obtained by special permission (dérogation), it shows the manner and extent of the personal intervention by François Mitterrand, and offers new insights into his attachment to the Grand Louvre project, which drove the wider programme of architectural and cultural projects. It shows how and why a set of disparate projects were packaged into a flagship policy, and sheds light on the conflicts of power within the machinery of government under the Fifth Republic, especially relating to cultural policy during the Lang years. It shows how the highly politicised context motivated Mitterrand’s drive to circumvent normal administrative processes in order to mark his presidency with a cultural stamp.     

BUILDING A BRIDGE TO THE PAST: ARCHAEOMETRY AT THE IPEN REACTOR

Neutron activation analysis has contributed to research in Peru in different scientific fields, particularly in archaeometry. In archaeometry, applications include the characterization of copper alloy artefacts from the tomb of El Señor de Sican to determine production methods, ceramics from the Wari Culture to study production, and distribution of Middle Horizon pottery in Cuzco, ceramics from Villa El Salvador to determine production groups, and obsidian source analysis.     

CHEMICAL AND MINERALOGICAL CHARACTERIZATION OF SASANIAN AND EARLY ISLAMIC GLAZED CERAMICS FROM THE DEH LURAN PLAIN,SOUTHWESTERN IRAN*

One hundred and seventy‐five glazed ceramics from Sasanian and Early Islamic period sites located on the Deh Luran Plain in southwestern Iran were examined by instrumental neutron activation analysis for characterizing differences in ceramic pastes and by laser‐ablation inductively coupled plasma mass‐spectrometry for identifying the constituents of the ceramic glazes. The results of the analysis reveal that alkaline‐based glazed ceramics have paste compositions that are distinct from contemporary and later ceramics decorated with alkaline–low‐lead and lead‐based glazes.     

CUERDA SECA CERAMICS FROM AL‐ANDALUS,ISLAMIC SPAIN AND PORTUGAL (10TH−12TH CENTURIES AD): INVESTIGATION WITH SEM–EDX AND CATHODOLUMINESCENCE*

Since little is known about the cuerda seca technique, our aim has been to complete an initial analysis of 11th‐century cuerda seca by studying fragments from the 10th century (Pechina, Almería) and the 12th century (Mértola and Almería), so as to establish the diachronic evolution of this technique. Characteristics specific to cuerda seca ceramic glazes were investigated using scanning electron microscopy (SEM) and quantitative chemical analysis with energy‐dispersive X‐ray spectrometry (EDX). The chemical compositions of the different‐coloured glazes (green, black, yellow and white) have given us valuable indications about the evolution of the technique. The opacification mode and the firing process were also investigated. With the help of cathodoluminescence (CL) and the study of modern ‘cuerda seca’ glazed ceramics, new hypotheses regarding the number of firing stages, taking into account glaze and paste transformations and their interactions, are put forward.     

Biometric Differentiation of Wild Philippine Pigs from Introduced Sus scrofa in Modern and Archaeological Assemblages

In many parts of Eurasia, the Middle East and Southeast Asia where native wild suids occur, it is notoriously difficult to differentiate these from introduced domestic pigs in the prehistoric archaeological record. Yet, correct identification of the initial appearance or introduction of domestic pigs (Sus scrofa ) is essential for determining the timing for the transition from purely hunting to the adoption of managed animal populations within different regions across the globe. In a recent review of techniques used by zooarchaeologists to distinguish between domestic and wild pig populations, the analysts concluded that the most reliable method was metrical analyses, when the data produce a clear two‐population pattern, one domestic, the other wild. In this study, we demonstrate how linear metrics are an effective tool, albeit at different levels of confidence, for differentiating the native and endemic species of Philippine pig from S. scrofa , both within modern contemporary assemblages, and the archaeological record. Copyright © 2017 John Wiley & Sons, Ltd.     

Temper mixture models and assessing ceramic complexity in the emerging Tarascan state

This study presents compositional data from ceramics drawn from surface survey and controlled excavations from three prehispanic sites within the relatively small Lake Pátzcuaro Basin, representing a ceramic sequence stretching nearly 1500 years, from the Preclassic to Late Postclassic Tarascan state (ca. 50 B.C.–1525 A.D.). Using neutron activation analysis, we identify compositional groups and model the importance of volcanic materials as temper in the construction of prehispanic ceramics by matching mathematical simulations of clay–ash mixes to the compositional groups. Rather than discreet clay resources and spatially circumscribed production, we argue for a broadly dispersed and highly varied organization of pre-Tarascan and Tarascan state ceramic production in which the potters' distribution and use of specific volcanic ashy additives, not clays, structured the organization of production.     

Subverting Regulatory Protection of ‘Natural Commodities’: The Prunus Africana in Madagascar

This article explores the contradictions that have emerged along the commodity chain of the endangered medicinal tree Prunus africana in Madagascar. The study provides a unique opportunity to build on theories of access, highlighting in particular the themes of social relations, culture and power in mediating access to natural resources and benefits that derive from commercialization. Commodity chain analysis is employed to illustrate that property rights, based solely on formal rights, legal claims or customary rights to ‘natural commodities’ are insufficient to measure who is able to gain and maintain access to the species. The results show that power, regulation and exclusion have a much greater impact on who is able to tap into the benefits of P. africana commercialization. This article illustrates how extraction firms in Madagascar have over the years finessed their way, through ‘green conditionalities’ or conservation concessions, into continued extraction of P. africana — all in the face of widespread regulation.     

A hierarchical taxonomic procedure for provenance determination: A case study of Chalcolithic ceramics from the central Zagros

This study develops a data analysis methodology for the exploration of the variance in chemical composition of ceramic artifacts due to their typological, location and temporal characteristics. This methodology then allows for the characterization of ceramics based on these characteristics and the sequential assignment of unclassified ceramics to a region, subregion or site, with further assignment to specific ware and chronological period. The procedure uses INNA data on the elemental composition of ceramics in order to derive a series of classification functions for each category within each level of the taxonomic hierarchy. The developed procedure is used to investigate a provenance problem involving Chalcolithic ceramics from the Zagros region of western Iran. The results show that the elemental composition of ceramics, when coupled with multivariate statistical techniques, represents a powerful means for distinguishing ceramic provenance.