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The analysis of ceramic fragments from the site of Puerto Nuevo (1000-500 AC), on the south coast of Peru, reveals a diversified ceramic production and possible long distance interaction networks for ceramics along the coast during the first half of the first millennium before our era. Macroscopic analysis with a hand-held digital low power microscope of fresh cross-sections conducted by Alejandro Rey de Castro allowed classifying the ceramics in different paste groups as well as identifying atypical ceramics. Petrographic analysis conducted by Isabelle Druc on 120 ceramic thin sections of these fragments helped refine this classification into six compositional groups, providing more details on the production and provenance of the wares. Comparison with 30 thin sections of clay-tiles collected in the lower and middle valley of the Ica and Pisco Rivers and on the littoral between the two rivers, showed that a majority of ceramics was manufactured with local sediments without much sorting. Different resource areas were exploited around Puerto Nuevo, on the littoral and in the Lower and Middle Ica and Pisco valleys. Based on these results, we propose the existence of several communities of potters working in the Puerto Nuevo region. One (or more) of these communities must have used coastal sandy clays with no need to ad temper, another mined inland clay deposits with natural inclusions of charophyte algae, and other(s) used materials rich in granodioritic rock fragments. Thirteen atypical ceramics were singled out based on different composition, texture, or firing, suggesting other production modes. Their composition, however, still suggests a coastal provenance, indicating that the interaction network extended along the coast, rather than with the highlands.

Análisis de la composición mineral de las vasijas de cerámica de Puerto Nuevo: algunas consideraciones preliminares sobre su producción y procedencia