Rock-art of the Western Desert and Pilbara: Pigment dates provide new perspectives on the role of art in the Australian arid zone

Systematic analysis of engraved and painted art from the Western Desert and Pilbara has allowed us to develop a spatial model for discernable style provinces. Clear chains of stylistic connection can be demonstrated from the Pilbara coast to the desert interior with distinct and stylistically unique rock-art bodies. Graphic systems appear to link people over short, as well as vast, distances, and some of these style networks appear to have operated for very long periods of time. What are the social dynamics that could produce unique style provinces, as well as shared graphic vocabularies, over 1000 kilometres? Here we consider language boundaries within and between style provinces, and report on the first dates for pigment rock-art from the Australian arid zone and reflect on how these dates from the recent past help address questions of stylistic variability through space and time.