A new perspective on the relationships among cream paste ceramic traditions of Southeastern Mesoamerica

New ceramic compositional evidence has come to light that bears on the relationships among the cream paste ceramics of southeastern Mesoamerica. This evidence, which derives from instrumental neutron activation analysis (INAA) and microprobe analysis, suggests that Ivory ware, a Late and Terminal Formative diagnostic found in southern Guatemala, is chemically similar not to other Guatemalan light firing pottery, but to Formative and Classic period cream paste wares from western El Salvador and Honduras. El Salvador is the clearest region of overlap between the Late Formative (Ivory Usulutan) and Classic (Chilanga, Gualpopa, and Copador) representatives of this chemically homogeneous cream paste tradition, and therefore we argue that the source zone for all of them lies somewhere in western El Salvador and not in Honduras or Guatemala. This inference contradicts (1) our own earlier hypothesis that Ivory ware originated somewhere in the Guatemalan highlands and (2) the hypothesis that cream paste Copador originated in the Copan Valley. If this inference is correct, the (1) the importance of ceramic circulation in the Late and Terminal Formative Providencia and Miraflores interaction spheres has been underestimated and (2) during the Classic period, Copan absorbed the productive capacity of western El Salvador (represented in this case by cream paste polychrome pottery) to a greater extent than has been appreciated previously.