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A geochemical analysis of 382 obsidian samples from different archeological sites in Central Chile (32°–35° Lat. South) has identified the preferential use of three known sources in the Andean mountain range, Arroyo Paramillos and Laguna del Diamante located in the Maipo Volcano area, and Las Cargas located ca 120 km further south. The analysis of the circulation and use of this raw material from the beginning of the Archaic period until the arrival of the Inka to this territory reveals differences in how obsidian from these three main sources was used, both spatially and temporally. The hunter-gatherers occupying the Andean mountain range preferred the obsidian source from the Maipo Volcano area, while the hunter gatherer and horticulturalist groups from the central valley used more frequently the obsidian from Las Cargas source. These differences are linked to the quality of the obsidian, its suitability for the intended use and the distance of the users from the source.

An online computer program for an interactive database was specifically developed for neutron activation analysis (NAA). The software written in Java includes gamma-ray catalog, neutron activation calculator for activity calculations and decay schemes. For the novice, expert and educator this program can greatly reduce needed information in NAA.

This study examines small-scale household ceramic production at the site of Xaltocan, Mexico, to understand the organization of household ceramic production prior to the development of the Aztec Empire. We examine utilitarian vessels and serving wares from an Early Postclassic (a.d.900–1200) domestic context using neutron activation analysis (NAA). We also examine archaeological evidence for ceramic manufacture. The NAA data reveal that similar raw materials and paste recipes were used for both utilitarian and decorated wares, suggesting that households produced both plain and decorated pottery. We conclude that ceramic production was an intermittent activity that took place alongside other crafts and agriculture. By looking at ceramics within their contexts of use and production, we consider the practices and choices made by individual social units, which is crucial to interpreting broader Early Postclassic economic systems and the ways in which commoners influenced these systems.

We present the lead isotopic composition of ceramic fragments from the Kyrenia shipwreck (Cyprus), selected from three chemical groups related to the Rhodes and Alimos regions (Greece). Fragments of the lead sheathing covering the ship’s hull and biogenic material formed on some of the ceramic sherds, were analyzed along with sherds from the Rhodes and Alimos source areas for comparison. The objective of this paper was to evaluate the impact of the seawater environment on the isotopic signature of the ceramics, and on our ability to use lead isotopes to source ceramics recovered from seawater. The results showed that the lead isotopic composition of the shipwreck ceramics was modified by its prolonged proximity to the lead hull sheathing. The lead signature of filtering marine organisms encrusted on the ceramics provided support for this hypothesis.

Zisha stoneware is a distinctive pottery tradition unique to China. This ceramic tradition was highly popularized during the Ming Dynasty (1368–1644 CE), and continues to be manufactured through the present day. Throughout history, Zisha stoneware vessels have been highly desirable objects used mainly by high status individuals, and by the early 17th century was exported to Europe as trade items. Soon thereafter, European imitations of Zisha stonewares were produced in the Netherlands at Delft, and in England and Germany. Today, authentic Zisha wares are difficult to discern from imitations using the naked eye alone, which poses problems for provenance, authenticity of antiquities, and reconstructing ancient ceramic technologies developed in China. The goal of this study was to determine the elemental and mineralogical properties of Zisha clays and to evaluate their suitability for archaeological provenance study. This study used petrographic thin-section analysis and neutron activation analysis to characterize multiple distinct types of Zisha clays, as well as other regional clays, from deposits around Huanglong Mountain (Yixing City, China). Representative samples of each clay type were sub-divided into untreated raw clays and processed and fired ceramics for comparison. The results show clays from each major collection area have unique compositional signatures based on their trace element chemistries and mineralogical properties. Additionally, those characteristics are stable and not significantly altered by preparation or firing processes. We propose that Zisha clays have high potential for archaeological provenance studies of Zisha stoneware antiquities.

Since the 1990s, a characteristic obsidian geochemistry has linked widespread archaeological assemblages spanning the Russian Far East, Korean Peninsula, and Northeast China. Referred to as PNK1, the source of this material has yet to be identified. As a contribution to solving this enduring puzzle, we report here analyses of a commercial specimen of obsidian exported from Chongjin in DPR (North) Korea. A combination of Neutron Activation Analysis (NAA) and Potassium Argon dating enable us to compare this piece with a large obsidian database for Northeast Asia. We find that the “Chongjin sample” is identical to PNK1 lithics from archaeological collections. While the exact source of the “Chongjin sample” remains unknown, we can more confidently locate the primary source for PNK1 lithics in DPR Korea. Based on an exhaustive literature review of the geology and geochemistry of volcanic glasses and other volcanic rocks in the northern part of the Korean Peninsula, and drawing on our own unpublished data, we suggest that the PNK1 source is most likely located south of Paektusan Volcano. This corroborates the existing evidence for the long-range transport of the material.

International audience; In Mesoamerica, the Early Postclassic (AD 900–1200) is characterized by the long-distance circulation of pottery with a very hard and shiny coating with a metallic aspect, known as Plumbate ware. Plumbate is linked stylistically to the Toltec culture but was produced in workshops in Soconusco (Chiapas). The discovery of a similar collection of sherds during recent work at the site of El Palacio (Zacapu, Michoacán) shows that Plumbate ware also reached this region of Western Mexico. We carried out instrumental neutron activation analyses (INAA) on 11 of the Zacapu fragments and compared the results to the data from ceramic pastes from the region of Soconusco and Pátzcuaro Basin (Michoacán). Ten sherds were produced in Michoacán and are thus a local imitation, whereas the last fragment corresponds to a Tohil-type Plumbate paste and was transported over a long distance. This raises questions of the modalities for the circulation of this pot and the conditions allowing for production of an imitation (transfer of technical know-how?), which we suggest is linked to the Toltec culture in the center of Mexico.; En México, durante el Posclásico temprano (900–1200 dC), se destaca la circulación a larga distancia de vasijas caracterizadas por un engobe de aspecto metálico muy duro y particularmente brilloso: la cerámica Plomiza. Se ha podido constatar la presencia en el centro-oeste de México de tiestos del auténtico tipo Plomizo Tohil, producción típica de la región maya de Soconusco (Chiapas), como así también la existencia de una imitación michoacana, a 1600 km de Chiapas. Durante las excavaciones arqueológicas en el sitio urbano El Palacio (Cuenca de Zacapu, Michoacán, México) se hallaron varios tiestos de aspecto similar a la cerámica Plomiza. Para comprobar la hipótesis de una imitación local o de una importación, se realizaron análisis por activación neutrónica (INAA) en 11 fragmentos. Los datos fueron comparados con los de las pastas cerámicas de la región de Soconusco y de la Cuenca de Pátzcuaro (Michoacán). Los resultados muestran que 10 tiestos fueron realizados en Michoacán y, en consecuencia, son una imitación local, mientras que un tiesto corresponde a la pasta del tipo Plomizo Tohil lo cual implica su circulación a larga distancia. Esto lleva a plantear cuestiones sobre las modalidades de circulación de esta cerámica y las condiciones que permitieron su imitación (¿transferencias de habilidades técnicas?), que sugerimos vincular con la cultura tolteca del centro de México.

Analysis of 519 obsidian artifacts (pebbles, debitage, cores and small bifaces) by nondestructive X-ray fluorescence from forests and steppes of southern Lanín National Park in the northern Patagonian Andean region, from Lácar (chemical group QU/AP), Lolog (CP-LL 1), Filo Hua-Hum (FHH), Paillakura (Pk, former unknown 1 group), Meliquina (MQ, former unknown group 2) and Yuco (YC) sources. Neutron activation analysis was applied to 29 of the artifacts. We identified for the first time the presence of obsidian from distant Covunco (PC1) in the center of Neuquén. This paper is the first English language publication of our ongoing, ten-year-long research. In accordance with previous work, but using other analytical techniques, the most frequently used sources during the late Holocene remain CP/LL 1 and Pk, here we add YC, mainly by the incorporation of new sites recently surveyed in the islands and the coast of Lake Lácar, next to its source. Another result consistent with previous work is the absence of obsidian from Mendoza and Chilean sources; therefore, we suggest these obsidians circulate just to the east and northeast, allowing us to discuss issues of human territoriality during the Late Holocene.

Zhokhov Island in the Siberian High Arctic has yielded evidence for some of the most remote prehistoric human occupation in the world, as well as the oldest-known dog-sled technology. Obsidian artefacts found on Zhokhov have been provenanced using XRF analysis to allow comparison with known sources of obsidian from north-eastern Siberia. The results indicate that the obsidian was sourced from Lake Krasnoe—approximately 1500km distant—and arrived on Zhokhov Island c. 8000 BP. The archaeological data from Zhokhov therefore indicate a super-long-distance Mesolithic exchange network.

The process of dating ancient obsidian artifacts converts the quantity of surface diffused molecular water to a calendar age using an experimentally derived diffusion coefficient predicted from glass composition. The internal structural water content of rhyolitic obsidian has been identified as a highly influential variable that controls the rate of water diffusion at ambient temperature. We demonstrate through the use of infrared spectroscopy and specific gravity (density) measurements on samples from 34 obsidian sources that total structural water (H2Ot) concentrations between sources can range from 0.07% to 1.66%. Structural water concentration within individual sources may also vary significantly and impact the accuracy of estimated ages for artifact manufacture if not properly monitored. A calibration for the water determination on individual samples by density measurement is developed here and the impact of structural water variation on obsidian chronometric dates is discussed.

This paper deals with the findings of Hospital Viejo site of Logrono (La Rioja, Spain), which yielded the largest evidence of local pottery production, comprising three kilns and a potters’ dump (13th–15th centuries). The study of pottery production in inland Iberia provides valuable information on the material conditions in which the Iberian medieval and post-medieval society occurred. Yet, the territory of La Rioja has been largely eclipsed by studies at coastal and southern areas of Iberia, due to their role in maritime exchange. With the aim of understanding the specific incidence and evolution of medieval pottery at regional scale, 77 sherds (MNI 637) including glazed and unglazed ware and kiln utensils were archaeometrically examined by combining the use of ICP-MS, XRD and SEM-EDS. Likewise, NAA was applied for provenance analysis, including the collation with a large majolica NAA database. The results provided the first chemical fingerprint of the production from Logrono consisting on three compositional groups within the same workshop (LOG-A, LOG-B and LOG-C). Moreover, pottery trading from Teruel and Valencia was detected, sustaining the historical records of these trade-networks. The imports showed tin lead glazes obtained by known recipes, contrasting with simpler manufactures (mostly unglazed or only lead glazed) of contemporary Logrono.

New geochemical results for two obsidian types, Laguna del Diamante and Arroyo Paramillos, naturally available in the Laguna del Diamante locality, a seasonally accessible highland wetland emplaced in the current border between Argentina and Chile at 3300 masl (34°S), are presented. A total of 1219 archeological artifacts from 41 sites located on both sides of the Andes have been assigned to these sources. The artifacts were analyzed by non-destructive, energy-dispersive X-ray fluorescence (ED-XRF). Archeological distributions of these obsidian types are assessed through GIS spatial analysis. Results show a great asymmetry in the distribution of these sources toward the two Andean slopes: the Laguna de Diamante chemical type shows a fairly local use pattern, being concentrated almost entirely in Cordillera sites, but the Paramillos shows a less homogeneous distribution and tends to be more concentrated in the sites that are in the western natural corridor. Although these lands were accessed and occupied from diverse demographic nodes in lower-altitude settings, the spatial analysis of obsidian artifacts reinforces the argument of dominant geographic vectors of access connecting with the western valleys and lowlands of Chile. Fil: Cortegoso, Valeria. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mendoza. Instituto Interdisciplinario de Ciencias Basicas. - Universidad Nacional de Cuyo. Instituto Interdisciplinario de Ciencias Basicas.; Argentina Fil: Yebra, Lucía Gabriela. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mendoza. Instituto Interdisciplinario de Ciencias Basicas. - Universidad Nacional de Cuyo. Instituto Interdisciplinario de Ciencias Basicas.; Argentina Fil: Durán, Víctor. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mendoza. Instituto Interdisciplinario de Ciencias Basicas. - Universidad Nacional de Cuyo. Instituto Interdisciplinario de Ciencias Basicas.; Argentina Fil: Barberena, Ramiro. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mendoza. Instituto Interdisciplinario de Ciencias Basicas. - Universidad Nacional de Cuyo. Instituto Interdisciplinario de Ciencias Basicas.; Argentina Fil: Lucero Ferreyra, Gustavo Fernando. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales. Laboratorio de Paleoecología Humana; Argentina Fil: Cornejo Bustamante, Luis Eduardo. Universidad de Chile; Chile Fil: Giesso, Martín. Northeastern University; Estados Unidos Fil: MacDonald, Brandi L.. University of Missouri; Estados Unidos Fil: Glascock, Michael D. University of Missouri; Estados Unidos

Northwestern Patagonia is located in a tectonically active part of the southern Andes (Argentina), which has facilitated the formation of obsidian, including pyroclastic deposits that have been affected by geomorphic processes, resulting in a complex obsidian landscape. To date, the geomorphic relocation of obsidian in the landscape has not been a focus of systematic research, and this hampers our understanding of prehistoric human mobility. We present an updated assessment of the regional availability of different obsidian types based on results from our research program, which combines geoarchaeological survey and geochemical characterization to understand the properties and distribution of obsidian. This robust “source-scape” provides the foundation for reconstructing patterns of lithic provisioning and discard. Our results suggest that interpretations of obsidian availability across the landscape should be more nuanced than is typically acknowledged. Based on our improved “source-scape,” we discuss the patterns observed in an archaeological X-ray fluorescence database. When compared with the geoarchaeological reconstruction of obsidian availability, the archaeological record conforms to a distance-decay pattern. Contrary to previous interpretations, we suggest that the distribution of obsidian types is not isomorphic with human home ranges. This geoarchaeological research program provides a basis for integrating the archaeological record of different Andean regions. Fil: Barberena, Ramiro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales. Laboratorio de Paleoecología Humana; Argentina Fil: Fernández, María Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Diversidad Cultural y Procesos de Cambio. Universidad Nacional de Río Negro. Instituto de Investigaciones en Diversidad Cultural y Procesos de Cambio; Argentina Fil: Rughini, Agustina Ayelén. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Filosofía y Letras. Departamento de Ciencias Antropológicas; Argentina Fil: Borrazzo, Karen Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Instituto Multidisciplinario de Historia y Ciencias Humanas; Argentina Fil: Garvey, Raven. University of Michigan; Estados Unidos Fil: Lucero Ferreyra, Gustavo Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales. Laboratorio de Paleoecología Humana; Argentina Fil: Della Negra, Claudia Eugenia. Provincia de Neuquén. Subsecretría de Cultura. Dirección General de Patrimonio Cultural; Argentina Fil: Duran, Victor Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales. Laboratorio de Paleoecología Humana; Argentina Fil: Cortegoso, Valeria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales. Laboratorio de Paleoecología Humana; Argentina Fil: Giesso, Martín. Northeastern Illinois University; Estados Unidos Fil: Klesner, Catherine. University of Arizona; Estados Unidos Fil: MacDonald, Brandi L.. University of Missouri; Estados Unidos Fil: Glascock, Michael. University of Missouri; Estados Unidos

The oldest pottery technology in North America was innovated by hunter-gatherers belonging to the Late Archaic Stallings culture (ca. 5150-3200 cal B.P.) of Georgia and South Carolina. The culture history of Stallings societies is relatively well-known; however, the permanence and scale of Stallings communities, the nature of the connections among them, and the extent to which they changed over time remain poorly understood. In this study, 450 samples Stallings pottery and 24 raw clay resource samples from along the Savannah and Ogeechee Rivers were submitted for neutron activation analysis (NAA). The NAA results show a significant shift in the nature of vessel transport at the outset of the Classic Stallings phase (4100–3800 cal B.P.), an interval marked by the appearance of the region's first formalized circular villages and dedicated cemeteries. This shift involved the funneling of pots with carinated rims into a few major middle Savannah River mortuary sites, providing evidence for a novel Stallings sociality that combined relatively localized village life with periodic large-scale ritual gatherings.

This work investigates questions regarding obsidian circulation among the late populations (since ca. 1100 BP) of Antofagasta de Sierra (Catamarca Province, Argentinean Southern Puna Plateau). By means of geochemical provenance studies conducted on obsidian artefacts, the sources of obsidian that these groups accessed have been identified. The samples considered in this study were collected at three radiocarbon-dated sites in the micro-region: La Alumbrera, Bajo del Coypar II and Campo Cortaderas. The results obtained are compared with those available for other contemporary sites and Formative contexts (ca. 3000–1100 BP) within the area of study. A preliminary discussion is presented on the basis of the environmental, political and social tendencies that characterized the times after ca. 1100 BP at the micro-region and south-central Andes.

In this paper petrographic and NAA analyses of two categories of ceramic wares of the early medieval Vega of Granada (southeast Spain) are presented. The vessels analysed include Water Containers and Glazed Wares and were manufactured between the sixth and the twelfth centuries CE. This is the period of the Islamization of Iberia and the emergence of al-Andalus. The studies in this paper offer an opportunity to understand technological, social and economic changes that were part of the pattern of Islamization. The results of this work show that there is a differential pattern of distribution for the samples studied in the eastern and western areas of the Vega and that there is a chronological change in technological variability of the production of the wares under investigation. An earlier period in which this variability is high gave way to a period where the variability is much less and potentially more standardised technological procedures were followed.

Excavations at the site of Kul Tepe in the Jolfa region in north-western Iran have unearthed various archaeological materials from Late Neolithic/Early Chalcolithic to Achaemenid periods (end of 6th millennium to 3rd century BC). During the Chalcolithic and the Bronze Age most lithic tools used in Kul Tepe were made of obsidian. From the first and second excavation seasons, 53 and 32 obsidian samples were selected and analyzed by pXRF. According to the results, the main source of obsidian for the workshops in Kul Tepe was Syunik, but other sources in the Lake Sevan Basin like Ghegam, Bazenk, Choraphor and Gutansar and the Lake Van region (Nemrut Dag and Meydan Dag) were utilized also.

We use ceramic and obsidian data from the ancient Maya port site of Vista Alegre to discuss long-distance exchange during the Terminal Classic (c. AD 850–1100) period. This is a time often associated with increased international trade relations and the growth of Chichen Itza as a dominant regional power in the northern Maya lowlands. Critical to the increased volume of international trade were the merchants who transported goods along the coast of Yucatan in large trading canoes. By combining a macroscopic assessment of the ceramics with visual, XRF, and INAA analyses of the obsidian artifacts, we gain insight into the various socioeconomic forces at work moving goods around the Peninsula. Given the paucity of Terminal Classic settlement in the interior Yalahau region, Vista Alegre appears to be an isolated site during this period, approximately 40 km from the nearest coastal neighbor. This allows us to focus on coastal exchange as the sole means by which goods arrived at the site. Our preliminary data contribute to the growing literature on the role market economies played in the Maya area, and the increased opportunities this afforded coastal peoples as circum-peninsular trade became more common through time.

Researchers have long been interested in tracing the movement of vesicular basalt from natural source areas to archaeological contexts in the Salt-Gila Basin of southern Arizona. However, this effort has been hampered by the lack of a reliable and practical analytical technique for characterizing the composition of individual artifacts and specimens from geological sources. This paper summarizes an assessment of the efficacy of nondestructive portable X-ray fluorescence spectrometry (pXRF) for vesicular basalt provenance analyses. Specifically, the nondestructive technique was evaluated by comparing its performance in the analysis of 100 geological samples to an independent study that utilized destructive XRF and Neutron Activation Analysis (NAA). Additionally, nondestructive pXRF was used to analyze 900 vesicular basalt samples from 18 different volcanic outcrops in the study region. The results of these analyses indicated that nondestructive pXRF is capable of generating sufficiently reliable data for select elements and also that there is considerable geochemical variability among the material source areas. Therefore, pXRF may be both a reliable and practical analytical technique for vesicular basalt provenance studies in the Salt-Gila Basin.

Geochemical analysis of 102 obsidian artifacts from the lower reaches of the Kolyma River was performed to understand the provenance of the raw material; previously, there were no such studies in this region. Sites under investigation belong to the Arctic Neolithic, generally dated to ca. 6000–1500 BP. Based on the data for potential obsidian sources in Northeastern Siberia and neighboring territories, available to us, it was found that all obsidian artifacts originated from the Lake Krasnoe source in Chukotka, with a straight-line distance of ca. 800–1100 km from archaeological sites of the Kolyma River. This is a remarkable example of long-distance exchange/transport of obsidian in Northeastern Siberia during the Stone Age. The Lake Krasnoe locale was the primary obsidian source for prehistoric populations in this vast region, including Chukotka, the Kolyma River basin, and Okhotsk Sea coast; this obsidian was also identified at some Alaskan sites near the Bering Strait.

Author(s): Capriles, Jose M.; Tripcevich, Nicholas; Nielsen, Axel E.; Glascock, Michael D.; Albarracin-Jordan, Juan; Santoro, Calogero M.

This study presents preliminary results of petrographic and X-ray fluorescence analyses of cut stone blocks used for urban construction at Teotihuacan, the capital of a regional state in Central Mexico (ca. AD 150–650). Cut stone blocks were concentrated in the civic-ceremonial core of the city and were probably prestigious architectural elements due to their higher costs of procurement and transportation compared to alternative materials (boulders and clay amalgam). This suggests that the organization of stone block procurement and distribution was likely embedded in power relations between commissioners and mining groups. By combining multiple analytical methods that complement one another, this study was able to discriminate local (within 10–15 km radius) from non-local materials. The results suggest that the majority (> 80%) of andesitic cut stone blocks were brought from non-local sources. This paper discusses procurement organization and suggests that most rocks were quarried by specialized groups and brought to the city through a tribute system and/or patron-client relations. This has implications for understanding the nature of the urban-hinterland relationship and expansion of the Teotihuacan state.

This study presents the results of instrumental neutron activation analysis (INAA), laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) and thin-section analysis of 74 majolica sherds from 16th–18th Century sites in the Zana Valley and Magdalena de Cao Viejo, Peru, and Panama Viejo, Panama. The majority of majolica samples from Peru are chemically associated with Panamanian reference groups, indicating their production in Panama; however, the remainder appears to be Andean-made, based on their distinct chemical signatures. These latter vessels seem to have been produced in Peru and build upon our understanding of colonial majolica manufacture in South America. Furthermore, the presence of blue-series decoration makes important contributions to our understanding of the Andean sphere of loza production.

Campanayuq Rumi is a large civic-ceremonial center located in the south-central highlands of Peru. Founded in the late Initial Period (1100–800 BC), Campanayuq Rumi became an important center within the Chavín Interaction Sphere in the Early Horizon (ca. 800–400 BC). In particular, Campanayuq Rumi is significant because of its geographical proximity to Quispisisa, the most important and widely circulated obsidian source during the Early Horizon. Portable X-ray florescence (pXRF) was used to geochemically source a sample of 370 obsidian artifacts from Campanayuq Rumi. Though obsidian from Quispisisa dominates the assemblage throughout the site's history, diachronic analysis indicates that the diversity of obsidian sources increases markedly in the Campanayuq II Phase (700–450 BC). The pXRF data lead us to conclude that Campanayuq Rumi was the locus of obsidian distribution to other locations in highland and coastal Peru within the Chavín Interaction Sphere, and functioned as a regional center of worship and interaction.

Chemical characterization reveals intra-source variation in obsidian from the Paredon source area in Puebla and Hidalgo, Mexico. Two chemical sub-sources of obsidian from Paredon are spatially discrete and cannot be distinguished by visual characteristics. To facilitate future investigations of the prehistoric exploitation of these sub-sources, an inter-laboratory comparison of elemental concentrations is presented based on neutron activation analysis and several XRF instruments.

This report considers features of the geochemical composition of obsidian from beach sediments of Krasnoe Lake along the lower course of the Anadyr River, as well as from lava–pyroclastic rocks constituting the lake coastal outcrops and the surrounding branches of Rarytkin Ridge. The two geochemical types of obsidian, for the first time distinguished and researched, correspond in their chemical composition to lavas and ignimbrite-like tuffs of rhyolites from the Rarytkin area. The distinguished types represent the final stage of acidic volcanism in the West Kamchatkan–Koryak volcanic belt. It was assumed that the accumulation of obsidian in coastal pebble beds was caused by the erosion of extrusive domes and pyroclastic flows. The geochemical studies of obsidian artifacts from archeological sites of the regions of the Sea of Okhotsk, the Kolyma River, and the Chukchi Peninsula along with the correlation of geological and archeological samples show that Krasnoe Lake was an important source of “archeological” obsidian in Northeastern Siberia.

There has been a long discussion on the nature of cultural, societal, and economical transformation after the migration of the Kura-Araxes groups from southern Caucasus to Iran and eastern Anatolia in the host areas. Provenance studies of obsidian artifacts could shed more light on this issue from another aspect. In this paper, we investigate if there is any similarity or difference in the obsidian consumption model among Kura-Araxes and autochthonous groups and if these similarities or differences can say anything about the economic, social, and cultural management of theses societies and their inner societal and cultural dynamics. A total of forty-eight obsidian artifacts from 13 surveyed and two excavated sites were analyzed by X-ray fluorescence. The results show the cultural transformation in northwestern Iran did not affect the exchange areas and interaction routes.

We studied the organization of mobility of hunter-gatherers groups of northwestern Patagonia (Argentina) from an interdisciplinary perspective. We combined geochemical and technological characterization of obsidian assemblages from surface and stratigraphic contexts spanning the Holocene, and a preliminary geoarchaeological study of the sources. The goals were to assess the provenance, mode of supply, use, and discard of obsidian artifacts on the basis of information on the structure of the two main regional sources: Cerro Huenul, located in the lowlands, and Laguna del Maule, located in the Andean highlands. We conducted geoarchaeological field sampling at different altitudes of the Barrancas River fluvial deposits to study the geomorphic impact on the secondary structure of the highland source. Preliminary geoarchaeological results allow extending the area of availability up to 90 km towards the lowlands from the outcrops. In addition, we performed non-destructive XRF analyses on 266 lithic artifacts, which were placed along a continuum of reduction. 89% of the artifacts corresponded to the local Cerro Huenul source, while 11% to Laguna del Maule. While the artifacts made on Cerro Huenul obsidian were represented by the full reduction sequence, those from Laguna del Maule are only represented by advanced stages. We integrate these results with information on the frequencies of projectile points, ceramics, and rock-art motifs for the two main archaeological sites in the region: Cueva Huenul 1 and Cueva Yagui. These proxies indicate that the sites have different place use histories, providing a scheme for the analysis of human use of the regional landscape. Fil: Fernández, María Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Diversidad Cultural y Procesos de Cambio. Universidad Nacional de Río Negro. Instituto de Investigaciones en Diversidad Cultural y Procesos de Cambio; Argentina Fil: Barberena, Ramiro. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina Fil: Rughini, Agustina Ayelén. Universidad de Buenos Aires. Facultad de Filosofía y Letras; Argentina Fil: Giesso, Martín. Northeastern Illinois University; Estados Unidos Fil: Cortegoso, Valeria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina Fil: Duran, Victor Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina Fil: Romero Villanueva Badin, Guadalupe. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Secretaría de Cultura de la Nación. Dirección Nacional de Cultura y Museos. Instituto Nacional de Antropología y Pensamiento Latinoamericano; Argentina Fil: Borrazzo, Karen Beatriz. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Instituto Multidisciplinario de Historia y Ciencias Humanas; Argentina Fil: Lucero, Gustavo. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina Fil: Garvey, Raven. University of Michigan; Estados Unidos Fil: MacDonald, Brandi Lee. University of Missouri; Estados Unidos Fil: Glascock, Michael. University of Missouri; Estados Unidos

This study uses type: variety-mode classification, digital stereomicroscopy, and Neutron Activation Analysis (NAA) to characterize the paste composition of Late Middle Preclassic-period pottery at the site of Holtun, Guatemala. The sample consists of 98 sherds including unslipped utilitarian ware, slipped serving ware, and Mars Orange fine paste serving ware. NAA reveals four paste composition groups that approximate types produced through type: variety-mode classification and paste groups recognized by digital stereomicroscopy. The analysis suggests a pattern of production in which unslipped utilitarian vessels, slipped serving vessels, and Mars Orange fine paste serving vessels were produced using different paste recipes. While unslipped utilitarian vessels and slipped serving vessels may have been produced and consumed locally, Mars Orange fine paste serving vessels were likely produced in or around Holtun but consumed more widely. Results of this research suggest the Late Middle Preclassic-period ceramic economy at Holtun was characterized by incipient specialized production, and exchange of at least one ceramic ware. These results advance our understanding of Late Middle Preclassic-period ceramic production and exchange at Holtun, and inform the study of the development of socio-political complexity in the Maya lowlands.

The Abbott Farm National Historic Landmark is one of the more significant Woodland-period sites in the Northeast. Numerous Hopewellian cultural traits (copper artifacts, cremated burials, exotic cherts, and mica) have been identified at the site. Numerous potential geological sources for the mica artifacts exist in the Mid-Atlantic region. We explore two analytical methods to evaluate the most likely geological sources of the mica artifacts. Source and artifact specimens were analyzed using pXRF as well as neutron activation. Our pXRF data are suggestive, but show high analytical uncertainty. We make several recommendations relevant to future attempts that would use this kind of instrument to study sheet mica. Our neutron activation results are promising and suggest that geochemical sourcing of mica has much potential. Results of both assays suggest that most of the artifact specimens recovered from Abbott Farm share a similar chemistry, and this composition is very similar to mica from southeastern Pennsylvania. A cut-and-drilled pendant exhibits a chemical makeup distinctly different from all other artifacts and source specimens evaluated here. Although our results are preliminary, the application of modern analytical methods to extant archaeological collections has the potential to provide significant new information.

The aim of this paper is to investigate whether the ceramics from the Goguryeo fortified sites of the Han River region in central Korea were manufactured and consumed locally during the southern expansion of the Goguryeo State (475–551 ce). For this research, 88 ceramic samples from seven contemporary sites in the southern territories of Goguryeo were sampled and analysed by ceramic thin-section petrography and neutron activation analysis (NAA). In addition, to establish a possible chemical fingerprint at Hongryeonbong Fort 2, five clay specimens were also gathered and analysed from the pottery firing structure. The results of this analytical study indicate that the majority of the ceramics from the Goguryeo fortified sites of central Korea were produced and circulated within this newly acquired region. In addition, it is highly probable that Hongryeonbong Fort, which contains the remains of what may be ceramic firing architecture, is the place of production for the ceramics.

Regional syntheses based on data recovered mostly from outside of the Northern Range have characterized the mountainous region in northern Trinidad as a boundary between two distinct interaction spheres during the Early Ceramic Age (ca. AD 350–650/800) (Boomert 2000). Changes occurring on Trinidad, other islands of the southern Lesser Antilles, and the South American mainland resulted in the disintegration of these earlier style zones during the final centuries of the Early Ceramic (Boomert 2000, 2010). This period of Late Ceramic cultural realignment was characterized by climate change, the renegotiation of political and social networks, and demographic transformations. We consider newly recovered ceramic evidence from the central Northern Range in order to evaluate the characterization of the region as a boundary and the region's role in broader Caribbean trends. We examine participation in interaction spheres to provide a more nuanced understanding of regional dynamics as they were expressed lo...

This data article contains an atlas of paste fabrics and supplemental paste compositional data generated from Late Middle Preclassic-period ceramics at the Maya site of Holtun, Guatemala. The data include maps showing locations of archeological contexts, excavation profiles, photographs and photomicrographs of sherds and paste fabrics, and compositional data produced by Neutron Activation Analysis (NAA) at the Research Reactor, University of Missouri (MURR). The NAA data include a biplot and table of canonical discriminant analyses, Mahalonobis distance calculations, and Euclidian distance searches between the samples.

We present data produced through archaeological and geological survey, as well as geochemical analysis of the Zaragoza-Oyameles obsidian source area located on the northern and western flanks of the Los Humeros Caldera in eastern Puebla, Mexico. One result of the intensive archaeological surface survey of this obsidian source area was the identification of 117 obsidian flow-band exposures. Geologic samples from 40 of these were submitted for instrumental neutron activation analysis. Eighty-five projectile points collected from the surface were characterized using portable X-ray fluorescence. These analyses identified three sub-sources: Z-O1, Potreros Caldera, and Gomez Sur. The Gomez Sur sub-source appears chemically similar to the previously identified Altotonga source, located 25 km to the northeast. Results of the geological survey help elucidate the relationship of Altotonga obsidian with the Zaragoza-Oyameles source area. The data from the three sub-sources are compared to all consumer site data attributed to the Zaragoza-Oyameles source in the Missouri University Research Reactor database. Results indicate that the majority of consumer samples throughout Mesoamerica match the Z-O1 sub-source, while 4 percent match the Potreros Caldera sub-source. This information, combined with the Gomez Sur data, is discussed in terms of economic relations with the regional center of Cantona. Obsidian procurement and distribution may have been more nuanced than previously modeled. We suggest that a number of potentially independent communities in addition to Cantona may have been involved in distributing this obsidian throughout Mesoamerica.

International audience; Temporary sites were a critical component of the prehistoric Near Eastern economy but, because of their ephemeral nature, are less frequently the focus of research than sedentary settlements. The present article presents the results of neutron activation analysis conducted on pottery from the temporary site of Saruq al-Hadid, United Arab Emirates. The results identified both continuity and change in the pottery consumed at the site in the Bronze and Iron Ages, which suggests that the peoples gathering here were integrated into economic practices observed at sedentary sites throughout southeastern Arabia.

This paper presents the results of instrumental neutron activation analysis of 332 decorated serving vessels from household excavations in the “settler” community within Xaltocan, Mexico. Our findings demonstrate significant ceramic production of all major Black-on-Orange and Redware types during the Middle Postclassic, Late Postclassic, and early Colonial periods. While Aztec scholars have assumed that rural ceramic production was limited to simpler designs and forms, we find that the most elaborately decorated pots were produced at Xaltocan during the periods of its political subjugation, economic marginalization, and smallest populace. Our results support a decentralized model of Aztec ceramic production and continuity despite imperial and colonial strategies of rule. Xaltocan’s potters persevered and supplied the town with feasting vessels through multiple political transitions. We tentatively identify two potting communities using the Xaltocan 1a and 1b clay sources, the patronage of which was socially and spatially variable within the site. These patterns were visible only with large-scale household excavations and extensive sampling from precisely dated household middens. Finally, within the potting community that utilized Xaltocan 1a clays, the major wares—Orangewares and Redwares—were likely produced in different workshops and/or using different recipes, and this organizational strategy was maintained across the colonial transition.

In the lower American Southeast, regional scale social interactions burgeoned alongside the growth of nucleated villages, widespread mound-building projects, and conspicuous mortuary ceremonialism during the Middle and Late Woodland periods (ca. A.D. 100–800). A premier material for understanding the scale and significance of social interactions across the southern landscape comes from Swift Creek Complicated Stamped pottery, a ubiquitous class of material culture that provides direct evidence of connections between specific sites at a multitude of scales and in myriad contexts. By combining design data and determinations of vessel provenance through Neutron Activation Analysis of a total of 825 sherds and 130 clay samples, this research ascertains types of social interaction and their predominant directions and levels of intensity across multiple ecological, social, and cultural contexts. The results indicate two main patterns: first, that vessels were frequently transported from habitation sites and civic-ceremonial centers to distant burial mounds; and second, that people traveled to ceremonial centers from outlying villages for events that included the exchange of wooden paddles. These patterns reveal a high level of social coordination within integrated networks that were inextricable from the region-wide trends toward population aggregation and heightened monumentality and rituality.

Basic data on the geology and geochemistry of obsidian from the Lake Krasnoe source in Chukotka (Northeastern Siberia) are reported for the first time. The data are based on 2009 fieldwork and analytical studies of igneous rock samples. The lake shore and surrounding parts of the Rarytkin Range were thoroughly examined. Two geochemical types of rhyolitic obsidian were recognized for the first time: (1) metaluminous obsidian related to the fine-grained crystalline rocks and (2) peralkaline obsidian corresponding to ignimbrite ash-flows or lapilli-tuffs composition. Both types are related to the final phase of acidic volcanism in the Western Kamchatkan-Koryak Volcanic Belt. Based on the results obtained, we conclude that accumulation of obsidian pebbles in the lake’s modern beach deposits is related to silicic melts that erupted during the late Eocene-early Oligocene in the form of extrusive domes or pyroclastic flows, which are now either covered by Quaternary sediments or located below the water level. The Lake Krasnoe obsidian was intensively used by the ancient populations of Chukotka as a raw material for making stone tools. It was also occasionally transported to Alaska across the Bering Strait in later prehistory. The distances between source and utilization sites are up to 700–1100 km. Geochemical data for Lake Krasnoe obsidian, based on neutron activation analysis and X-ray fluorescence that are presented here, can now be used for provenance studies in the Northeastern Siberia and adjacent regions of northern North America.

Neutron activation analysis was conducted on Late Bronze IIA pottery from Tarsus-Gozlukule and compared with archival data from contemporary sites in Cilicia and Cyprus. The results provide a model for the organization of pottery production at Tarsus-Gozlukule when the settlement was under the rule of the Hittite Empire. It is proposed that multiple contemporary pottery workshops provided the community of Tarsus-Gozlukule with both Hittite-style pottery and other wares. It is further suggested that these workshops may have differed in the extent to which they were attached to the imperial administration.

The high Andes of South America were among the last environments that Homo sapiens colonized during its Pleistocene dispersion out of Africa. The peopling of this high-elevation environment was constrained by atmospheric hypoxia, cold stress, and resource availability. Here we report archaeological and geoarchaeological analyses from Cueva Bautista, a dry rock shelter, located at 3933 m above sea level in southwestern Bolivia. We focus on a well-preserved occupation surface containing hearths and high-quality stone tools AMS dated to 12,700–12,100 cal BP. Geoarchaeological resolution of the site supports its stratigraphic integrity and archaeological analyses indicate that the early human occupation was formed as a temporary camp by mobile foragers relying on a curated technological strategy. Regional paleoenvironmental reconstructions suggest that Cueva Bautista's occupation was synchronous with humid conditions and its abandonment with increased aridity. Our findings suggest that mobile hunter-gatherers explored – albeit not colonized – the high Andes during the late Pleistocene and provides further support that a combination of biological, behavioral, and environmental constraints affected human adaptation to this extreme environment.

Study of northwest Alaskan ceramic production and distribution patterns has the potential to provide new evidence of coastal hunter-gatherer mobility and social interaction in the late pre-contact period. This research is directed at characterizing potential clay sources and linking ceramic groups to raw-material source areas through instrumental neutron activation analysis (INAA) and modeling of possible clay and temper combinations. Results of INAA of 458 ceramic, 31 clay, and 28 possible temper specimens reinforces prior identification (Anderson et al., 2011) of three broad compositional groups. Though raw materials were collected over a large area, the clay specimens demonstrate remarkable geochemical homogeneity and fall within one of the established ceramic geochemical groups, Macrogroup 2. This suggests that potters may have added little to no mineral temper to the clays and also that what we have termed Macrogroup 2 ceramics were produced in the north and central areas of northwest Alaska. Group 1 and 3 ceramics may be evidence of pottery being brought into the region from elsewhere. Results indicate that ceramics circulated widely around the region and suggest the possibility of areas of greater production perhaps due to an abundance of clay or wood fuels needed for firing. This work lays the foundation for further exploring the cultural processes that underlie these distributions and provides insight into the complexities of hunter-gatherer ceramic production and distribution.

This work comprises the utilization of instrumental neutron activation analysis to determine the concentration of 24 chemical elements in pottery shards from two large archaeological sites in central Amazon, Lago Grande and Osvaldo. The multidimensional data set was analyzed by cluster and principal component analysis for defining chemical groups of pottery. The results were correlated to potential exchange networks driven by three mechanisms: trade, exogamic marriage and territorial integration in the region. All of them have important consequences for archaeological research regarding the Amazonian pre-colonial occupation.

The success of pottery provenance studies is fundamentally dependent upon spatially patterned variation in the composition of exploited clay resources. Uniformity in clay composition within a region and recognizable differences between regions of interest are essential requirements for determining provenance, but these parameters are difficult to satisfy in study areas such as the coastal plain of the southeastern USA in which chemical and mineralogical variation tend toward continuous gradients. In an attempt to improve the reliability and validity of pottery provenance studies in the area, this research investigates compositional variation in raw clay samples from across Florida and southern Georgia through NAA (n=130) and petrographic analysis (n=99). The results indicate that fourteen distinct compositional regions can be differentiated, ranging from 50 km to 400 km in length. These regions dictate the direction and minimum distance a pottery vessel must have been transported in order to be re...

Decades of obsidian provenance studies have been conducted in different areas of northwestern Iran. Unlike other parts of northwestern Iran, there have been no obsidian studies in the Little Zab basin. Despite the importance of this basin, only a limited number of excavations and archeological studies in this area have been conducted. The artefacts in the present study came from Rick Abad and Ubaid, sites along the Iran-Iraq border. All of the artefacts were discovered to be from sources in Turkey and none from Armenia. It seems that the cultural transformation taking place in the Little Zab basin had almost no effect on the interaction areas and exchange routes in the western part of Lake Urmia which connected to Anatolia, or the roads extending westward into Iraqi Kurdistan and northern Mesopotamia.

Obsidian provenance studies, based on geochemical signatures, are important for determining the source regions of obsidian artefacts. Such research depends on the availability of reproducible geochemical data. An inter-laboratory study was conducted to validate analytical methods applied to samples from four obsidian sources in northeast Hokkaido Island (Shirataki, Rubeshibe, and Oketo regions). The methods applied were Wavelength-Dispersive X-ray Fluorescence (WDXRF), Energy-Dispersive X-ray Fluorescence (EDXRF), Inductively Coupled Plasma–Mass Spectrometry (ICP–MS), Neutron Activation Analysis (NAA) and Prompt-Gamma Activation Analysis (PGAA). Eight laboratories in Japan, the Russian Federation, Republic Korea, Hungary, Canada, and the USA took part in the trials. Results indicate discrepancies between laboratories, but compositional data for 53 elements were successfully compiled, and reference compositions for 16 elements in each sample defined. Based on these data, a new chemical discrimination scheme is proposed for obsidian sources in the Shirataki, Rubeshibe, and Oketo regions. This scheme is applicable to the discrimination of obsidian sources using semi-quantitative EDXRF analysis, with this being important in non-destructive provenance studies of artefacts. This study fosters the further establishment of reference materials for obsidian sources in the Hokkaido region, and the sharing of such materials.

The lead isotope composition of 45 sherds of six different pottery wares from the Eastern Mediterranean and dating from the Late Hellenistic – Late Roman period is analysed and compared to data obtained on ceramics and clays from the Eastern Mediterranean. These sherds were previously analysed by neutron activation and the origin and relationship between the wares has been debated in the literature. The results show that lead isotopes support earlier hypotheses proposed based on NAA or answer questions left unanswered by NAA concerning the origin and relationships between these wares. The lead isotopic data complement the NAA and the results also confirm the effectiveness of lead isotope analysis in discriminating among different wares from production centres in the Eastern Mediterranean.

We present the results of instrumental neutron activation analysis of ceramics recovered from the Solomon Islands, associated with Alvaro de Mendana y Neira's 16th century colonizing expedition to the region (c.1595–6). Based on the chemical and typological data and previously published petrological and geochronological research, this study assigns the provenance of the ceramics variously to Peru, Panama, Spain, China and Thailand. A comparison of the provenance results with historical records related to Mendana's voyage also shows the value of the archaeological assemblage in providing a detailed picture of provisioned ceramic types and their provenance.