Evaluating soil resilience in long-term cultivation: a study of pre-Columbian terraces from the Paca Valley, Peru

This study evaluated the soil properties of pre-Hispanic stone-walled terraces by comparing soil quality along terraced catenas in the Paca Valley, a tributary of the Mantaro Valley, Peru. Micromorphological and bulk analyses of terrace soils revealed that despite terracing soil horizonation largely followed the catena. Upland terraced fields had deeper A-horizons with higher biotic activity than uncultivated controls, but less fine material and greater carbonate accumulation. Midslope fields were highly variable in depth and soil properties reflecting considerable substrate and anthropogenic variations in this growing zone. Silts and clay accumulated in valley bottom terraces where pedofeatures indicate an ongoing downhill movement of fine material. The distribution of soil separates down Paca hillsides demonstrates that terraces help moderate, rather than control, the erosion of key soil fractions required for long-term agricultural productivity. This study illustrates how the loss of fine material is partly mitigated by soil consolidation in dense topsoil peds, microaggregates and saprolite. These aggregates are retained by terraces and contribute to deep soil profiles. Nevertheless, many fields show signs of degradation, especially from insufficient organic matter amendment. In addition to farming itself, buried soils and associated artefacts in valley bottom fields indicate mass soil movement, a likely result of disruption caused by Inca road and terrace construction. The poor soil quality of many upland terraces also confirms that stone-walled terraces were constructed on mediocre substrates for farming, indicating a high labour investment for marginal agricultural returns in these areas. Overall, Paca Valley terraces improve topsoil retention and promote deep soil profiles. However, these fields present quite varied growing substrates. It is also apparent that over the last millennium, soil depletion from cultivation has compromised soil quality through loss of fine material and organic matter. Shifts in farming practice away from pre-Hispanic practices such as long-fallow and middening appear to exacerbate this trend.     

Top-down or bottom-up: rural settlement and raised field agriculture in the Lake Titicaca Basin, Bolivia

Differing interpretations regarding the organization of past intensive farming are often distinguished as “top-down” or “bottom-up” perspectives. The development of intensive farming and its social organization are attributed to either nascent states and centralized governments or the incremental work of local communities or kin-based groups. We address the social organization of raised field farming in one region of the Lake Titicaca Basin of the Andean altiplano, Bolivia. We evaluate past research in the Katari Valley, including our own, based on recent settlement survey, excavation, and a variety of analyses. Taking a long-term perspective covering 2500 years, we find that relations of production and rural organization changed greatly over time in relation to changing sociopolitical conditions. Local communities played dynamic roles in the development and organization of raised field farming, yet its intensification and ultimate recession were keyed to the consolidation and decline of the Tiwanaku state. We conclude that the top-down/bottom-up dichotomy is overdrawn. Local communities and their productive practices never operated in a political or economic vacuum but both shaped and were transfigured by regional processes of state formation, consolidation, and fragmentation.     

Feasting landscapes and political economy at the Early Horizon center of Huambacho, Nepeña Valley, Peru

The present contribution examines feasting practices at Huambacho (800–200 cal. B.C.), an Early Horizon elite center of the Nepeña Valley, Department of Ancash, Peru. Feasts are approached as long-term strategies essential to the political economy of human societies. Drawing upon data from public architecture, material culture and food remains, the study closely considers feasts as political actions and investigates the organization and social meaning of these special events. At Huambacho, I contend that the diacritical aspects of feasting practices, such as the use of exclusive spaces and special paraphernalia, contributed to the dual celebration of communal identity and prosperity, and the creation and reproduction of social inequalities. The research highlights the dual centripetal and centrifugal dynamics of Early Horizon feasts and demonstrates the role of the Huambacho center in advertising the success of the local community based on new forms of production and innovative rules of commensal hospitality.     

Dark Age Traffic on the Bristol Channel, UK: A Hypothesis

Exotic pottery from the eastern Mediterranean and southern Gaul in the late 5th to 7th centuries is recognized as the characteristic find from Dark Age sites in Ireland and western Britain. But there is no consensus on the mechanisms by which they arrived. Interpretations range from diplomatic gifts through souvenirs to commerce. This attempt to resolve the issue is based on sites around the Bristol Channel. The quantities of pottery and numbers of sites are used to generate a rough estimate of the number of ships carrying the pottery to the area. It is argued that the estimated volume represents commercial trade.
© 2007 The Author     

Living and dying as subjects of the Inca Empire: Adult diet and health at Puruchuco-Huaquerones,Peru

Imperial strategies varied as the Inca expanded their empire from the capital in Cusco. Some communities were conquered violently while others were ruled indirectly with little evidence of Inca presence. According to ethnohistorical evidence, the central coast was peacefully annexed by the Incas ca. A.D. 1470, but little is known about how Inca imperialism may have affected the quality of life of subjects of the Inca Empire. We integrate multiple lines of evidence to assess diet, health and disease for a sample of human remains from the Late Horizon cemetery of Puruchuco-Huaquerones, Peru. Specifically, we examine and analyze osteological, dental and stable isotope data (n = 162, 90 and 46 respectively) in order to investigate whether the Inca period population at Puruchuco-Huaquerones experienced nutritionally insufficient diets and poor health under imperial policies. Diet at Puruchuco-Huaquerones incorporated a variety of foods, both plant and animal. Osteological lesions and stature indicate periods of stress, with males experiencing more illness relative to females. Stature sexual dimorphism, the presence of healed lesions and isotope data indicate a sufficiently nutritious diet and support the conclusion that, although disease was present, individuals were healthy enough to survive and recover. Geographical and temporal comparisons suggest that health changed little with the Inca annexation of this region, but future work is needed.     

Obsidian hydration at high elevation: Archaic quarrying at the Chivay source,southern Peru

We examine obsidian hydration as a means to date archaeological sites at high elevation in the central Andes, and in particular quarry sites that are difficult to date by radiocarbon means. The Chivay obsidian source lies in a volcanic depression above the Colca Valley in Arequipa, Peru (71.5355° S, 15.6423° E) at 4950 masl. We compare obsidian hydration readings from one quarry and two workshop locations. Ninety-one flakes from the quarry pit, and 61 and 33 flakes from the workshops were analyzed for hydration bands. Of these, 68 from the quarry, and 54 and 33, respectively from the workshops produced at least one culturally meaningful hydration band. As expected, obsidian appears to hydrate slowly at this high elevation. Yet, variation in hydration readings is low within stratigraphic contexts, suggesting relatively narrow windows of knapping activities in each excavation level. A small number of radiocarbon dates allow us to develop a preliminary hydration rate for Chivay obsidian in this high elevation location. Hydration data indicate that intensive quarrying began by 3800 cal. BC and stopped ca. 2300 cal. BC. By contrast, the two workshops appear to have been deposited 2900 and 1200 cal. BC, and 2700 and 2400 cal. BC. The data are consistent with an uptick in obsidian use by at least the Terminal Archaic period.     

A provenance study of archaeological obsidian from the Andahuaylas region of southern Peru

To date, most obsidian sourcing studies in the Andes have concentrated on the highlands and Titicaca Basin of far southern Peru and northern Bolivia. Toward achieving a more complete understanding of the region, this paper offers new data on the long-term prehistoric obsidian procurement and consumption patterns in the Andahuaylas region of the south-central Peruvian highlands. Obsidian sourcing data from Andahuaylas are particularly interesting since the area is centrally located among several important regional obsidian sources. A total of 94 obsidian samples from a range of sites of different temporal periods were chemically analyzed using portable X-ray fluorescence (PXRF), as well as laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS). The results demonstrate a number of interesting trends, the first of which is the long-term importance of the Potreropampa obsidian source to populations of the Andahuaylas region from at least the early Formative period (∼2500 BCE). Secondly, the results indicate that procurement strategies by local populations in Andahuaylas were primarily reliant on nearby (<150 km) obsidian sources. Finally, the paucity of more distant, yet widely exchanged, high quality obsidian (i.e., Chivay, Alca) confirm that as a region, Andahuaylas was more heavily connected economically (and likely culturally) with local areas to the south (Apurímac) and to the west (Ayacucho).     

Identifying locals, migrants, and captives in the Wari Heartland: A bioarchaeological and biogeochemical study of human remains from Conchopata, Peru

The site of Conchopata in the central Peruvian Andes was the secondary center in the heartland of the Wari Empire (AD 600–1000), and in this study we examine whether this urban locale was populated by locals, voluntary migrants from distant regions, and/or captives who were forcibly brought to Conchopata. We examine radiogenic strontium isotope ratios from 72 dental enamel and bone samples representing 31 formal burials and 18 human trophy heads to distinguish between locals and non-locals, and we examine skeletal and archaeological data to establish whether non-local persons were voluntary migrants or captives. We also describe a new, straightforward technique in the evaluation of radiogenic strontium isotope ratios to assist in detecting non-locals when large datasets are available.Results show that natal Conchopata inhabitants should exhibit radiogenic strontium isotope ratios that range from ⁸⁷Sr/⁸⁶Sr = 0.70548 to ⁸⁷Sr/⁸⁶Sr = 0.70610. Thus, among the 31 burials, 29 exhibit local values, suggesting that Conchopata was not a cosmopolitan center to which numerous foreigners migrated; rather, it was populated by local peoples, likely the descendants of the preceding Huarpa culture. The two individuals with non-local radiogenic strontium isotope ratios are an infant and a 17–22 years old female. The archaeological context suggests that the female may have been taken captive for subsequent sacrifice, as she was interred in front of the ritual D-shaped structure in which decapitated human heads (trophy heads) and sacrificed camelids were deposited. Among the 18 trophy heads sampled, 14 have non-local values, confirming previous studies of smaller samples that suggested that Wari warriors travelled to other locales and took captives—both adults and children—for subsequent transformation into trophy heads. Additional analyses of bone-tooth pairs from a subsample (12 burials and six trophy heads) shows that the burial group was much more sedentary (homogenous radiogenic strontium isotope ratios in bones and teeth) and the trophy head individuals were much more mobile (heterogenous radiogenic strontium isotope ratios in bones and teeth). Overall, the multiple lines of evidence support the notion that the Wari Empire occasionally used militaristic means, combined with elaborate ritualism, to subjugate other populations, a tactic that may have helped Wari establish and maintain control in particular regions in the Andes.     

Re-placing plainware: Production and distribution of domestic pottery,and the narration of the pre-colonial past in the Peruvian Andes

The location of domestic pottery production is central to archaeological narratives. Yet too often, unfounded assumptions are made about place of production, especially in relation to place(s) of distribution and use. Only rarely is this geography of production and distribution explored in detail and with perspective. Here, we investigate this problem in the context of the Peruvian Andes. We present the results of extensive ethnoarchaeological research on the manufacture of domestic vessels in over thirty villages with potters in Northern Peru. Drawing on the ethnographic concept of technical style, we identify three tendencies on the relationships between toolkits, manufacturing techniques, geographic units, and exchange. From these tendencies we develop two models of domestic pottery production and distribution: the local production model and the non-local production model, which are applied in analysis of archaeological materials. While this distinction is apparently simple, we demonstrate how the explicit or implicit use of each of these models has shaped some of the most important debates and issues in Andean archaeology. In sum, we explain how understandings of the manufacture, exchange, and use of plainware impacts narratives about the pre-colonial past.     

Architecture,Local Elites,and Imperial Entanglements: The Wari Empire and the Cotahuasi Valley of Peru

Abstract

One of the enduring problems in the archaeology of ancient states and empires is the recognition of different forms of regional consolidation in the archaeological record. Among the clearer markers of direct control over an area is thought to be the construction of an administrative facility. Our recent research on the impact of the Wari Empire (A.C. 750–1000) in the Cotahuasi Valley of Peru, however, suggests that facilities built by and for local elites may emulate so many aspects of state facilities that they can be misinterpreted as intrusive sites. We demonstrate how the Cotahuasi sites diverge from the architectural canon found at Wari administrative facilities and suggest why this convergence of local and imperial architectural styles occurred.     

Combining photogrammetry and laser scanning for the recording and modelling of the Late Intermediate Period site of Pinchango Alto,Palpa, Peru

This paper describes the 3D modelling of Pinchango Alto, Peru, based on a combination of image and range data. Digital photogrammetry and laser scanning allow archaeological sites to be recorded efficiently and in detail even under unfavourable conditions. In 2004 we documented Pinchango Alto, a typical site of the hitherto poorly studied Late Intermediate Period on the south coast of Peru, with the aim of conducting spatial archaeological analyses at different scales. The combined use of a mini helicopter and a terrestrial laser scanner, both equipped with a camera, allowed a fast yet accurate recording of the site and its stone architecture. In this paper we describe the research background, the 3D modelling based on different image and range data sets, and the resulting products that will serve as a basis for archaeological analysis.     

Commoner Power: A Case Study from the Classic Period Collapse on the Oaxaca Coast

This article argues that the agency of commoners has not been adequately theorized in archaeological studies of the political dynamics of complex societies. Recent developments in social theory emphasize that political relations are produced through social negotiations involving commoners as well as elites. This paper considers the role of commoners in the Classic period collapse in the lower Río Verde Valley, Oaxaca, Mexico. Regional survey and excavation data demonstrate that the Classic-to-Postclassic transition was marked by dramatic changes in settlement patterns and sociopolitical organization, including the decline of the Late Classic regional center of Río Viejo. The research indicates that rather than passively reacting to the sociopolitical developments of the Classic-to-Postclassic transition, commoners actively rejected many of the ruling institutions and symbols that were central to the dominant ideology of the Late Classic state. Early Postclassic people reused and reinterpreted the sacred spaces and objects of the Río Viejo state such as carved stone monuments and public buildings. The evidence from the lower Verde is examined in the context of an emerging theoretical perspective in archaeology that considers commoner power. We argue that commoners contribute to the social negotiation of dominant discourses through three overlapping forms of social interaction: engagement, avoidance, and resistance.     

Domestic Spaces as Public Places: An Ethnoarchaeological Case Study of Houses, Gender, and Politics in the Ecuadorian Amazon

In an ethnoarchaeological case study, we take a gendered perspective on the house as a locus of political life in Conambo, a village of about 200 Achuar- and Quichua-speaking peoples in the Ecuadorian Amazon. In this small-scale society, women and men engage actively in political practice in independent yet complementary ways, and the domestic context is a place where political life is conducted on a daily basis. In this article, the house is examined as a politicized context at three scales of materiality: the organization of settlement in the community, the spatial relationships in the house, and the scale of painted designs on pottery bowls used in the house. At each scale, we identify material correlates of women's and men's participation. Our goal is to bring attention to potential archaeological correlates of women's political involvement in past societies, to question assumptions about women's political lives and domestic spaces, and to expand the ways in which anthropological archaeology may contribute to understanding cross-cultural variation in women's and men's domains of power.     

Human and animal diet at Conchopata, Peru: stable isotope evidence for maize agriculture and animal management practices during the Middle Horizon

This paper reports δ¹³C and δ¹⁵N values for human and animal skeletal remains from the Middle Horizon (AD 550–1000) site of Conchopata in the Peruvian highlands. The data indicate that maize was the dietary staple for both humans and the majority of animals at this urban site. Camelids at the site segregated into two groups according to δ¹³C values, reflecting two distinct animal management strategies. Human infants were found to have elevated δ¹⁵N values, reflecting the trophic level effect of breastfeeding. No sex based differences in diet were observed.     

Territoriality,social boundaries and ancestor veneration in the central Andes of Peru

This article examines the relationship between social boundaries, territoriality and ancestor veneration during the Late Intermediate Period (1000–1450 AD) in the Rapayán Valley of the Central Andes of Peru. Constructing upon recent theoretical work on social boundaries and territoriality combined with the analyses of early historical sources, I argue that the distribution of various types of above-ground mortuary structures across the landscape was a powerful mechanism of social control through space that not only served to assess territorial rights, but also to confine or exclude people from a bounded space by the delimitation of social boundaries. I sustain that above-ground mortuary structures reflected a growing concern for territorial behaviors during the LIP that allowed household members, kinship groups and/or political units, according to varying contexts, to draw social boundaries between insiders and outsiders by reifying identity and social solidarity through ancestors worship. Within the broader Andean context, I suggest that the widespread distribution of mortuary monuments across the landscape provided the political landscape with an ideology of fragmentation which encouraged the distinction between insiders and outsiders and thus promoted group identity through social exclusion from a geographical point of view at many different levels.     

Ancient beer and modern brewers: Ethnoarchaeological observations of chicha production in two regions of the North Coast of Peru

Archaeological studies of alcohol have tended to focus on consumption while production, particularly of beer, has been more difficult to recognize and interpret. The ethnoarchaeological study of modern maize beer or chicha production on Peru’s north coast provides information on (1) production steps and their material correlates, (2) labor and raw material inputs at different scales and possible labor bottlenecks, and (3) variation in technology and organization that is linked to contexts of consumption and cultural differences through time across the Andes. Because of this variation, the ethnoarchaeological observations reported here should not be directly projected onto the past, but rather should serve as points of comparison with the archaeological record.     

Ceramic production in ancient Nasca: provenance analysis of pottery from the Early Nasca and Tiza cultures through INAA

We report the results of an instrumental neutron activation analysis (INAA) undertaken on a regional sample of pottery from the Southern Nasca Region. The samples included specimens primarily from the Early Nasca (ca. A.D. 1–450) and Tiza (ca. A.D. 1000–1476) cultures from a total of 16 different prehispanic sites. The results of the analysis demonstrate centralized production of Early Nasca polychromes and decentralized production of pottery from the Tiza culture. The results of this analysis confirm previous conclusions about the organization of these two indigenous cultures of the south coast of Peru and support the hypothesis of an excess production of polychromes at the ceremonial center Cahuachi for Early Nasca, and multiple centers of production for the Tiza culture.     

嫩江流域青铜时代生业方式研究

本文详细地分析了嫩江流域青铜时代的遗址墓葬的地理分布及周围环境、遗址自身特点、生产生活用具的分类及数量、动物骨骼及各种贝类遗存等方面的资料,得出该地区的生业方式是一种复合型的——定居、狩猎、捕捞、采集、畜养、手工业以及少量的交换经济,这几种经济方式相互补充,共同构成了一种有别于青铜时代中原地区以农业经济为主的新的生业方...     

Bureaucrats and managers,peasants and pastoralists,imperialists and traders: Research on the Uruk and Jemdet Nasr periods in Mesopotamia

In recent decades the Uruk and Jemdet Nasr periods of the fourth millennium B. C. in Mesopotamia have been the subject of considerable research by scholars of the ancient Near East. Interests in and interpretations of these periods have focused on their credentials as early states, urban societies, and the immediate antecedents of Sumerian civilization. In this overview, I first present a brief historical background on the study of these periods, followed by a critical review of recent approaches that have had significant impacts on current directions of research and understanding of the fourth millennium. Finally, I suggest some research avenues currently being tentatively explored that may be especially appropriate for developing further our understandings of these periods.