ALLOTEAU, Fanny; BEN AMARA, Ayed; CANTIN, Nadia; DARRAS, Véronique; CASTAÑEDA, Alejandra

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ALLOTEAU, Fanny
Archéosciences Bordeaux

BEN AMARA, Ayed
Archéosciences Bordeaux

CANTIN, Nadia
Archéosciences Bordeaux

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89th annual meeting of the Society for American Archaeology, 2024-04-17, New Orlean.

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In the framework of the CHUPICERAM project, we perform geochemical analyses to investigate the chemical composition of the pastes and the decorations of ceramic wares excavated from two different archaeological sites (TR6 / JR24) and assigned to two different periods (Chupícuaro / Mixtlan) of the Chupícuaro culture. A corpus of study of around 200 sherds was selected, based in particular on their representativeness of the different stylistic groups encountered, and several analytical methods were used (p-XRF, μ-Raman, hyperspectral imaging, SEM-EDX, FTIR). All the ceramic pastes are identified as non-calcareous (CaO < 2.5 wt%). Our results show compositional differences of these pastes between archaeological sites and through time (Chupícuaro sherds versus Mixtlan sherds), both for major elements and trace elements. Regarding the decorations, they consist of a mixture of clay and iron oxides for the reds, and of clay, iron oxides, and manganese oxides for the black/café ones. The clayey beige decorations are rich in calcium. A change in raw material at the Chupícuaro / Mixtlan transition is highlighted for the black/café decorations in particular. On the basis of these results, our hypotheses concerning the production of Chupícuaro ceramics and its diachronic evolution will be introduced in the present communication.< Réduire

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Geochemical Investigation of Chupícuaro Ceramic Wares (Formative Mesoamerica)

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