Fit for purpose: investigating adaptations in late Pleistocene lithic technology to an island environment at Buang Merabak, New Ireland, Papua New Guinea

The occupation of Buang Merabak, a cave located on the island of New Ireland, by 42,000 years ago demonstrates that the colonisation of the Bismarck Archipelago occurred soon after that of Sahul. This provides the opportunity to consider the adaptation of small groups of people to a depauperate island environment. An analysis of a lithic assemblage from Buang Merabak was used to consider how technological organisation reflects changing patterns of site use and subsistence strategies from the late Pleistocene through to the early Holocene. A strategy of small simple flake technology was identified, which would have allowed site occupants flexibility in the face of fluctuating patterns of faunal resource use. During the late Pleistocene, a broad range of local lithic materials were used expediently. Gradual change occurred in the early Holocene to a smaller variety of materials with dominant use of local chert flakes and conservation of specific volcanic materials.