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6. Final Remarks

We can see that multiple lines of evidence as well as multi-disciplinary research can provide important information for the study of ancient use of material culture. NAA and PIXE are powerful tools that, in combination with petrography and XRD, can show important data concerning provenance of rocks in the archaeological record. San Lorenzo Tenochtitlán and La Merced, Early Formative sites during the transition of late Early Formative and the beginning of Middle Formative, were using serpentinite from Cuicatlán Oaxaca. La Venta increased the diversity of this raw material by using Cuicatlán Oaxaca and Tehuitzingo Puebla sources, and also unknown sources (probably quarries from Guerrero, Western Mexico).


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