Investigating compositional diversity among Fijian ceramics with laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS): implications for interaction studies on geologically similar islands

This paper presents a ceramic provenance analysis of 260 Fijian sherd clays by laser-ablation inductively-coupled-plasma mass spectrometry (LA-ICP-MS). Our analyses define three compositional groups in western Fijian ceramics distributed across the 2700 year ceramic sequence. Frequencies of compositional groups represented in the diachronic assemblages indicate an increasing spatial sphere of interaction until approximately 1500 BP. By 1000 BP interaction had spatially contracted to a significant degree. These findings suggest re-evaluation of current ideas about interaction in the southwest Pacific is necessary.