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Item type:Publication, Preadult diets in prehistoric Lima: Stable isotopes from Huaca 20 (620–780 CE), Maranga Complex, Peru(Elsevier Ltd, 2024-10-01)Using stable isotope and Bayesian Mixing Models, this study aims to understand the preadult dietary patterns of human individuals from Huaca 20 (H20, 620–780 CE), a residential sector of the main urban center in the lower Rimac Valley of the Peruvian Central Coast. Due to preservation issues, a practical approach was employed to understand the diet of this population, using data for δ13C and δ15N obtained from the dentine of anatomic tooth segments of 20 adult individuals, which were analyzed by sex and broad life-stages (i.e., infant, child, adolescent). We then conducted individual paleodietary reconstructions using a Bayesian Mixing Model to obtain the quantitative contribution of four food groups. The results indicate that this population relied on a mixed diet mainly composed of C4 (maize) and C3 resources complemented with marine protein in variable proportions, and minimal contributions of terrestrial protein. Maize and C3 resources were the main foods during infancy and childhood of these adults, whereas the diet during adolescence shows more marine protein, possibly more similar to the adult diet of this community. This isotopic evidence from Huaca 20 suggests the use of specific infant feeding strategies. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Wari Lithic Technology on the Northern Coast of the Andes: Geochemical, 2D Geometric Morphometric, and Technological Analyses of Obsidian Bifaces From San José de Moro(Wiley, 2026-01-01)This study examines Wari obsidian production in a cache of 39 bifaces found at the Late Moche site of San José de Moro (Jequetepeque Valley, North Coast of Peru, 700–850 ad ). Portable X‐ray fluorescence, geometric morphometric, and technological analyses were used to investigate raw material provenance and bifacial production. The artifacts were made from obsidian obtained from two major Andean sources, Alca‐1 and Quispisisa. The assemblage shows recurrent shape regularities, but not strict uniformity: bifaces differ in reduction strategies, structural configuration, and variability between sources. These differences are best understood as technical choices made within a shared Wari technological framework.2 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Large Obsidian Bifaces from a Middle Horizon Ritual Offering in the South-Central Coast of Peru: Provenance and Technology(Cambridge University Press, 2026-01-01)This report presents the provenance and technological analysis of two large obsidian bifaces recovered from a Middle Horizon (ca. AD 600–1000) ritual abandonment context at the coastal site of Cerro de Oro in the Cañete Valley, Peru. Portable X-ray fluorescence (pXRF) analysis identifies Quispisisa as the obsidian source, thereby documenting its circulation beyond highland Wari contexts. Technological analysis indicates contrasting trajectories: one biface shows no evidence of use, whereas the other exhibits macro use wear consistent with woodworking. Its location in a residential complex suggests community participation in the acquisition and ritual re-signification of prestigious nonlocal materials. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Identifying communal interaction and mobility in the peruvian central coast through strontium isotope analysis of human individuals in Huaca 20(Elsevier Ltd, 2025-02-01)We present the results of strontium isotope analysis conducted on human individuals recovered at the Huaca 20 sector of the Maranga Complex; a Late Lima settlement of the Lower Rimac Valley that flourished during the Middle Horizon Epoch 1 (600–800 CE). Our aim is to evaluate the diversity of the Huaca 20 population through an integrated approach that combines contextual analysis of burials’ associations, the bioarchaeological characterization of the buried individuals and the acquisition of 87Sr/86Sr compositions of individuals’ tooth enamel to explore early-life values and probable geographic origins. Our results reveal a scenario of a mainly local population with a minority of foreign individuals that suggest mobility consistent with post marital residential patterns. The lack of correlation between individual's origins and a diversity of burial practices and associations (as for example, foreign umber ware ceramics) suggests that mobility might have occurred as a continuous phenomenon, which resulted in a cosmopolitan population, generated under regional interactions that occurred beyond elite control.1 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A Pilot Study of Ceramic Production in a Residential Compound at Cerro de Oro, Cañete, (550–950 CE), An Urban Settlement in the South Coast of Perú(Taylor & Francis, 2025-01-01)This article presents a synthesis of research on the chaîne opératoire of ceramic production at Cerro de Oro (550–950 CE), a significant archaeological site on the southern Peruvian coast. Specifically, we discuss the association of ceramic paste recipes (clays and added tempers), vessel forms, and decoration within a residential compound to consider the organization of ceramic production. To do so, this study integrates new data with previous results obtained from Mössbauer spectroscopy, x-ray diffraction, and other studies of ceramics from the same and other compounds. The objective is to see if specific forms, decorations, or groups of people may be associated with certain paste recipes. We argue that identifying the absence or presence of these types of associations will allow us to better understand ceramic production at Cerro de Oro and particularly the role residential groups played in this process.1