Hydraulic mills were introduced in the early colonial period in the Americas to grind wheat into flour. During the nineteenth and twentieth centuries, the rise of the agro-export model in Latin America shaped the development of a flour industry in which water-powered mills played a central role. Over time, these technologies were used not only to increase production for the export market but also to meet the needs of domestic consumption, both local and regional. In this context, in 2017 we began to investigate the characteristics of a hydraulic mill, currently in disuse, in the town of Payogasta in the province of Salta (Argentina), to determine its chronology and functionality. In addition to surveying the structure, we conducted excavations in the nearby rooms that were part of the site. We found that this mill was in operation between the end of the nineteenth and the end of the twentieth centuries, grinding wheat, corn, carob, and red bell pepper, and that the adjoining rooms were used to house the people who were waiting their turn to grind their raw materials.

This article presents an example of ceramic circulation and exchange networks in the southern Andean region during the first centuries AD, derived from the study of the production, circulation, and consumption of the pottery assemblages found in the villages of Cardonal and Bordo Marcial, located in the Cajón Valley in Catamarca, Argentina. Our analysis of the technical, morphological, and design aspects of the ceramics suggested six morphological groups using three representation techniques and 16 paste recipes; we also found that locally manufactured vessels were used together with ceramics of nonlocal origin in similar domestic contexts. In addition, the foreign ceramic materials suggest that there were networks of interaction between Cardonal and Bordo Marcial and other regions, such as the southern Puna, the Hualfín Valley, the Rosario-Lerma Basin, and the San Francisco Valley in northwestern Argentina.

Presentamos una estrategia metodológica para la ubicación temporal de estilos alfareros que combina el análisis contextual y el tratamiento estadístico del conjunto de datos radiocarbónicos disponible. El análisis abordó tres grupos de alfarerías con una amplia expresión regional e importantes afinidades estilísticas: San José, Hualfín y Molinos, representativos de los inicios del período Intermedio Tardío en la región valliserrana del Noroeste argentino. Se trabajó con una muestra exhaustiva de 28 fechados, evaluando diferentes grados de certeza en la asociación muestra-evento, y discriminando la asociación entre los eventos datados y los conjuntos cerámicos. Este tratamiento de los fechados permitió jerarquizar aquellos más confiables y seleccionar una submuestra cualitativamente superior. Los datos depurados se emplearon para evaluar la hipótesis sobre la cronología tardía de los estilos mediante modelación estadística bayesiana. Como resultado se pudieron detectar datos anómalos y ubicar el lapso aproximado de la producción de los conjuntos estilísticos entre los siglos once y catorce dC, momentos que se asocian a desarrollos locales preincaicos. Asimismo, se establecieron tendencias diferenciales entre los tres grupos estilísticos considerados, observando antigüedades mayores para Hualfín y Molinos.

En los Andes surandinos, las prácticas funerarias incluyeron una diversidad de actos rituales en torno a los restos de los difuntos que iban más allá de la preparación del cuerpo y el lugar de depósito. El desarrollo y las características de estos actos dependían principalmente de la condición social que tenían los muertos en vida. En el Pucará de Tilcara, definido como capital de la provincia incaica de Omaguaca, se detectan una amplia variedad de formas de inhumación, pero en este trabajo abordamos el caso de un contexto mortuorio de una mujer, cuya muerte se estima ocurrió hacia el final del período Incaico o inicios de la época Hispano-Indígena. Análisis interdisciplinarios del contexto arqueológico y, particularmente, los estudios entomológicos de la fauna cadavérica y bioantropológicos permitieron determinar que esta mujer estuvo expuesta antes de quedar sepultada por procesos naturales. Proponemos que esta exposición ocurrió en el marco del culto a los ancestros difundido por todo el imperio, y sirvió para remarcar su estatus social. El acompañamiento mortuorio y los análisis de estroncio sugieren que la mujer formó parte de un grupo de elite oriundo de otra región del Tawantinsuyu, que pudo trasladarse y asentarse en la Quebrada durante la caída del Imperio inca, buscando refugio ante la inminente envestida española.

This article discusses the composition of prehispanic diets based on the isotopic composition (δ13C, δ15N) of 10 human samples dated between 3600 and 1300 BP from the Cajón Valley in Northwest Argentina. The sample is the only one available for the time and region considered and covers a 2,300-year range. It shows long-term tendencies in the consumption of food resources during a time when people were experimenting with and eventually domesticating plants and animals in the high-altitude Southern Calchaquíes valleys. Results indicate that animals contributed more to the diet than was expected and plants correspondingly less than expected. This proportion was maintained even during the human occupations associated with the agropastoral villages of Cardonal and Bordo Marcial (ca. 2000 BP) when a greater contribution of plant resources—in particular maize—would be expected. This new evidence demonstrates the diversity of productive strategies used by the societies of Northwest Argentina at the beginning of the Formative period. A variety of resources contributed to daily food intake, minimizing the importance of maize in the diet.

We report comprehensive rock-magnetic and archaeointensity investigations from 21 well-constrained pottery fragments from the Catamarca province of northwest Argentina. The absolute ages of the studied sites are ascertained by several high-quality radiometric ages and range between 1940 to 114014C yr BP. Magnetic mineralogy experiments indicates that the remanence is carried by thermally stable Ti-poor titanomagnetites. Forty-seven samples belonging to 11 out of 98 studied potsherds yielded reliable absolute intensity determinations judging from the quality parameters associated with the Thellier double-heating experiments. Moreover, we analyzed the available absolute geomagnetic intensities associated with the radiometric ages to construct the first intensity paleosecular variation curve (PSVC) for South America using thermoremanent magnetization carried by burned archaeological artifacts obtained in the present investigation and 79 other selected archaeointensities (out of 213 published in the literature). The dataset is used to build the PSVC reference curve by combined bootstrap and temporal P-spline methods. The variation curve shows significant differences with the global prediction model SHA.DIF.14k mainly based on the GEOMAGIA database. This intensity PSVC curve shows reasonably good agreement with paleosecular variation curves for Europe between 850 through 1150 BC and for Asia between 1000 and 1500 BC. This regional curve may be used as most reliable archaeomagnetic dating tool for the major part of South America (Peru, Brazil, Argentina, Chile, and Bolivia) for the last two millennia.