Revisiting the Exploitable Threshold Model: 14th century resource procurement and landscape dynamics on Perry Mesa,Arizona

Abstract

This study presents a revision of Dean E. Arnold’s (1985, 1993) Exploitable Threshold Model, which attempts to explain the selection of raw materials for pottery production. Arnold’s model posits that potters’ preferences for materials are largely determined by the linear distance to individual resources. We argue, however, that potters’ choices are, at least in part, determined by spatial relationships among the necessary resources rather than the distances to them. This study of 14th century pottery production on Perry Mesa, Arizona demonstrates that potters selected materials based on the co-occurrence of readily available sources of temper, clay, and fuel. Lack of water and fuel sources on the mesa top compelled local residents to eschew the use of readily available basaltic sands to temper their plainware pottery. Instead, Perry Mesa potters selected granitic sands from the river valley nearly 300 vertical meters below their settlements.     

Chemical and Petrographic Analysis of Pre‐Hispanic Pottery from the Southern Abaucán Valley,Catamarca, Argentina

Neutron activation (NAA) and petrographic analyses were carried out on Late and Inca Period pottery from 15 archaeological sites and several clay samples in the southern Abaucán Valley, Catamarca, Argentina. The results from the NAA and petrographic analyses provide new data concerning local versus non‐local pottery production and vessel exchange for these two pre‐Hispanic cultural periods. The chemical data demonstrate the use of different clay sources over time until the Inca appearance in the region, when a more structured and controlled production is observed. Petrographic analyses show a similar change in the ceramic paste recipes used by ancient potters.     

Archaeological Ceramics and the Physical Sciences: Problem Definition and Results

Abstract

Ancient pottery has been measured and analyzed for over a century. Its virtual indestructibility makes it an attractive material to study. After the experimental stages of application of some of the newer analytical approaches from the physical sciences, however, problems should be better defined before extensive studies begin. Collaboration between the archaeologist and the physical scientist should develop knowledge of the basic raw materials available to the potters at the stage of technological development within the culture whose ceramic products are being studied. The likelihood that the results will offer clues that help us better understand parts of the culture that produce the pottery are thus increased and justify the research work.     

TEMPORAL TRENDS IN NATIVE CERAMIC TRADITIONS OF THE LOWER CATAWBA RIVER VALLEY

Abstract

Bennie Keel’s 1972 work at Upper Sauratown was the opening salvo of the Research Laboratories of Archaeology’s 30-year Siouan Project, which continues under the guise of the ongoing Catawba Project. Keel’s early work at the protohistoric Hardins and early historic era Belk Farm sites in the Catawba River Valley continues to inform the current phase of Piedmont Siouan research. This study compares and contrasts Keel’s Hardins and Belk Farm ceramic assemblages with those from the later Catawba sites of Nassaw Town, Old Town, and New Town to achieve a diachronic view of Catawba ceramic development. This comparison reveals a long span of stylistic and technological continuity abruptly terminated by rapid emergence of the modern Catawba ceramic tradition between 1760 and 1770.     

A CHARACTERIZATION OF THE COMPOSITIONAL VARIATIONS OF ROMAN SAMIAN POTTERY MANUFACTURED AT THE LEZOUX PRODUCTION CENTRE

The study addresses the chemical variations for Roman Samian wares manufactured during various periods at different workshops within the Lezoux production centre. Instrumental neutron activation analysis and inductively coupled plasma spectrometry were used to determine the chemical constituents of the pottery. The two techniques were evaluated based on the capacity of each to identify the same compositional groups for Lezoux Samian with the use of multivariate statistics. The compositional analysis redefines and clarifies how potters used the clay sources at the site to produce fine wares. The results indicate that the majority of potters from different workshops at Lezoux shared the same clay source during the second century AD.     

Dealing for Dollars

Abstract

Archaeologists in the field and laboratory commonly record colors of pottery using Munsell or other standard codes. These data are seldom used for more than primary documentation of individual items or to summarize common colors of a defined type or ware. Despite the many factors affecting pottery color it is possible to use this information to investigate patterns of variation within ceramic traditions and between contemporary sites, and to establish the degree of standardization or quality control achieved by ancient potters. Significant trends can be identified in the range and proportional occurrence of colors on assemblages of Red Polished Ware, the common pottery of the Early and Middle Cypriot Bronze Age (ca. 2300–1650 B.C.). These have implications for establishing the degree of control exercised over the process of manufacture and are relevant to discussions of the context of pottery production technology transfer, and inter-site relationships.     

Fragments of a Hanging-Bowl from Bekesbourne,Kent, and Some Ornamental Problems

ENGLAND IN THE 9TH CENTURY witnessed a revolution in pottery production. For the first time since the Roman period, pottery was wheel-thrown and produced on a near industrial scale. Research into this ceramic revolution has focused on chronology and, in particular, whether the technology was introduced before Scandinavian settlement. Yet, little attention has been paid to technological choices made by the potters or how these choices were influenced by wider societal changes. This paper takes a holistic approach to production, employing a range of analytical techniques to reveal the production sequence followed by potters working at one of the new industries — Torksey (Lincolnshire). With new insights into raw material choices, processing procedures, vessel forming practices and firing regimes, the paper challenges long-standing assumptions about manufacturing practice and the spread of the potters’ wheel. Opening a window into the mind of the potter, this article offers a greater understanding of the mechanisms that facilitated the diffusion and ultimate success of this new technology.     

Marginalized Potters and Ceramic Compositional Groups: Neutron Activation Analysis of Contemporary Pottery from Tigray,Northern Highland Ethiopia

The study presents the results of neutron activation analysis (NAA) of contemporary pottery from Tigray Regional State, northern highland Ethiopia. This is the first regional-scale study of ceramic composition of Tigray’s pottery and is part of an ethnoarchaeological study of the material and social contexts of pottery production and consumption in Tigray’s Eastern (Misraqawi), Central (Mehakelegnaw), and North-western (Semien Mi’irabawi) zones. The analysis identifies clear compositional groups with strong regional patterns, an encouraging result for the use of NAA to study Tigray’s ancient pottery trade. Significantly, the study further contributes to discussions of how mutually constituted social identities of potters and consumers affect compositional patterning in the distribution of pottery in market networks.     

Introduction: recent approaches to pottery and society in the Southeast

ABSTRACT

This article discusses the themes of this special edition of Southeastern Archaeology on modern pottery studies and summarizes the articles included in this edition. Southeastern archaeologists increasingly are applying new theoretical constructs and techniques to ceramic studies. These new techniques, in conjunction with traditional typological analysis, allow archaeologists to approach the study of past peoples from a broader perspective.     

Ceramic Ethnoarchaeometry in Western Sardinia: Production of Cooking Ware at Pabillonis

Ceramic ethnoarchaeology has been used to explore fully the chaîne opératoire and to understand all of the stages and factors involved in pottery production, such as raw material selection or paste recipes used by the potters. This work presents the results of the application of compositional analysis undertaken in the village of Pabillonis (western Sardinia, Italy), the main cooking ware production centre of the island. Pottery and local clays have been characterized using a combination of analytical techniques. By integrating the ethnographic information and the archaeometric approach, it was possible to reconstruct the operational sequence, exploring the relationship between the processing of raw materials and the functionality of the final products, and the intra‐production compositional variability.     

Pottery production on Rishiri Island,Japan: perspectives from X‐ray fluorescence studies

Energy‐dispersive X‐ray fluorescence (EDXRF) was used to determine the minor and trace element composition of 54 sherds of pottery dating from the Final Jomon to Okhotsk periods. The majority of the sherds came from Rishiri Island, Japan. Principal component (PC) scores were calculated using the log transformed concentration values, and groups were sought in the PC scores using kernel density estimates (KDEs). Two main groups were found in the data; linear and quadratic discriminant analysis classified both groups successfully. Significant differences in the concentrations of Cu, Fe, K, Nb, Pb, Rb, Th and Zr were found to exist between the two groups. The lack of correspondence between chronological ware types and geochemical groups implies that the same raw materials and paste recipes were in use during the Epi‐Jomon and Okhotsk eras on Rishiri Island. One possiblity is that the Epi‐Jomon and Okhotsk potters used the same clays and tempers, since no other alternatives were available. Alternatively, the Okhotsk potters could have adopted the same paste recipes as the Epi‐Jomon potters, or the Okhotsk pottery tradition could be descended from the Epi‐Jomon pottery tradition.     

Taken with a Grain of Salt: Experimentation and the Chemistry of Archaeological Ceramics from Xaltocan,Mexico

Neutron activation analysis (NAA) of ceramics from Xaltocan (n?=?651) displays high values for sodium and potassium and low concentrations of many transition metals and rare earth elements compared to other sites in the Basin of Mexico. Given that Xaltocan was situated on an island in the middle of a saline lake, the potential reasons for this chemical signature are diverse. On one hand, if the sodium and potassium were elevated due to some behavioral aspect of the potters, the Xaltocan chemical groups provide a glimpse at the behaviors of Xaltocan potters that permit more precise source designations. On the other hand, if this chemical fingerprint arose due to contamination in a saline post-depositional environment, the Xaltocan chemical groups would not be valid references for provenance studies. To evaluate these alternative hypotheses, we employ several lines of evidence: (1) comparison of the Xaltocan ceramics to over 5,000 NAA assays of clays and ceramics from the Basin of Mexico, (2) experimental doping of clays with water of different salinities and fired to different temperatures, (3) leaching experiments of archaeological pottery sherds (n?=?22) recovered from the site of Xaltocan, and (4) laser ablation–inductively coupled plasma–mass spectrometry of the clay and temper fraction of a small sample of Xaltocan ceramics to determine which component is responsible for the elevated sodium and potassium values. The results suggest that the high sodium and potassium values were present in the ceramic paste before firing. We then use these newly established reference groups to better understand the role of Xaltocan in the regional economy. The type of experimentation employed in this study has proven to be an important method for determining the behaviors of ancient potters and distinguishing them from post-depositional processes.     

Using hearths for temper: petrographic analysis of Middle Woodland charcoal-tempered pottery in Northeast Florida

Charcoal-tempered pottery is uncommon in North America, but was produced with notable frequency in Northeast Florida from ca. AD 300–600. Thirty-six thin sections of pottery were analyzed by petrographic analysis and compared to 10 clay samples in order to characterize the paste of charcoal-tempered wares in terms of charcoal and mineralogical composition and abundance, assess the number of clay sources used to make the pottery, identify the species of wood represented in charcoal inclusions, and infer techniques of ceramic production. This analysis identified four temper categories, three texture groups, and three distinct clay resources used to make charcoal-tempered pottery, all of which were likely local to Northeast Florida. Identified wood taxa include pine (Pinus sp.), cedar (cf. Juniperus sp.), cypress (cf. Taxodium sp.), and sassafras (Sassafras albidum), with pine suspected to be the most common. These genera of charred wood, which exhibit minimal shrinkage in the samples, along with the prevalence of bone and grog inclusions, indicate that hearth contents were processed as temper, sometimes in combination with quartz sand. Potential reasons for the use of hearth contents as temper are considered.     

Seventeenth-century Pottery from Ash,Surrey

Abstract

About 2,000 sherds, mainly in white fabric, were found on a site at Ash which was one of several producing similar wares on the West Surrey and Hampshire borders. Some of the sherds were medieval, but the remainder were 17th century and are analysed in an attempt to assess the forms and characteristics of the post-medieval pottery made at Ash. Documentary evidence discloses the presence of potters in Ash in the 17th and 18th centuries, although there is no direct link with the site, and also indicates possible sources for the potters’ clay.     

Temporal Patterns in Ceramic Production in the Berbati Valley,Greece

Abstract

This research explores temporal patterns in the procurement of raw materials for ceramic production, based mainly on material recovered in regional survey. The underlying premise is that potters in different cultural phases will preferentially exploit the same geological landscape for the most suitable raw materials, but different materials may be preferred depending upon the potter's technological traditions. A program of petrographic and chemical analyses was carried out on ceramics from the Berbati-Limnes Archaeological Survey, Argolid, Greece. Ceramic fabrics from several cultural phases were studied and compared with patterns of settlement within the valley. The results show that ceramics from regional surveys can be used to identify broad patterns of change in exploitation of the same landscape. In some cases these patterns correlate with changes in settlement and may indicate that different choices in raw material procurement mark the arrival of potters from outside the valley.     

PRODUCTION TECHNOLOGY OF ROMAN LEAD‐GLAZED POTTERY AND ITS CONTINUANCE INTO LATE ANTIQUITY

A broad selection of Roman lead‐glazed pottery dating from the first century ad through the fifth century ad was studied to establish locations of workshops and to address their technology of production. The ceramic bodies were analysed by ICP–AES. In addition, lead isotope analysis was undertaken on a selection of glazes. These findings suggested that there were several regions responsible for the production of lead‐glazed ceramics in the western Roman world, including central Gaul, Italy and, probably, Serbia and Romania. Using the body compositions as a starting point, the glazing techniques employed by each of the potential workshops were examined using electron probe microanalysis. It was determined that there were two primary methods of glazing. The first method used lead oxide by itself applied to non‐calcareous clay bodies, and the second method used a lead oxide‐plus‐quartz mixture applied to calcareous clay bodies. Based on these data for clay composition and glazing method, transfer of technology from the Hellenistic east to the western Roman world was proposed. Likewise, the inheritance of lead‐glazing technology into late antiquity was established by making comparisons to lead‐glazed ceramics dating to the seventh to ninth centuries from Italy, the Byzantine world and Tang Dynasty China.     

TESTING ASSUMPTIONS OF NEUTRON ACTIVATION ANALYSIS: COMMUNITIES,WORKSHOPS AND PASTE PREPARATION IN YUCATAN,MEXICO*

Contemporary pottery and raw materials (N= 170) from three workshops in Ticul, Yucatán, were analysed by neutron activation to test the hypothesis that individual workshops that used their own clay sources could be identified by their pottery. Although the data failed to confirm the hypothesis, the results reinforced previous conclusions about the relationship of local communities of potters to the chemical patterning of pottery made in these communities.     

Ceramic Technology and Social Boundaries: Cultural Practices in Kalinga Clay Selection and Use

This study examines cultural sources of variation in ceramic compositional patterning in two pottery-making villages of the highland Philippines. In Dalupa, many potters are part-time specialists whereas in Dangtalan, women make pottery less frequently. Previous studies show that both pottery form and decoration correspond well with Kalinga social boundaries, but how do morphological and decorative patterning relate to compositional variability? Although researchers have made substantial advances in our understanding of natural and postdepositional sources of compositional variability, little is known about behavioral factors that affect chemical and mineralogical compositional patterning. This study examines cultural practices of clay selection and use in an ethnographic setting, and undertakes technical analyses to assess the relationship between behavior and material culture patterning. Our study identified paste differences between the clays and fired ceramics from Dangtalan and those from Dalupa. Findings from our compositional research thus parallel earlier morphological and stylistic studies, and illustrate multivariate differences in ceramics from these two Kalinga communities. This ethnoarchaeological and analytical project contributes, therefore, to understanding objective parameters within a behavioral context. It also provides an example of how a combined characterization approach, using chemical and petrographic techniques, can yield insights on intraregional variation at a finer scale of resolution than is often attempted.     

LEAD ISOTOPE ANALYSES OF ISLAMIC POTTERY GLAZES FROM FUSTAT,EGYPT*

Lead isotope analyses have been undertaken on a group of Islamic lead‐glazed pottery artefacts from Fustat, Egypt, spanning the period from the eighth to the 14th century ad , that had previously been the subject of a comprehensive typological, chronological, petrographic and technological study. Comparison of the lead isotope ratios for the glazes with those for lead ores from Egypt, Iran, Tunisia, Anatolia, Greece, Sardinia and Spain provided information on the possible sources of the lead used in the production of the glazes. The results show that the lead used in glaze production by the Islamic potters at Fustat was most probably obtained from distant ore sources in Iran or Tunisia, Sardinia, Spain and the Taurus Mountains. Different ore sources were favoured in different periods and, to a limited extent, for different types of pottery, but at no time did the Fustat potters use the potentially more accessible Egyptian ore sources.