Islands in the interior: a model for the colonization of Australia's arid zone

A colonization model is proposed to explain the timing of human occupation in different regions of the arid zone and the reasons for inferred demographic changes through time. A biogeographic approach views changes in human economy and technology against the backdrop of climatic oscillations of the last 40,000 years. This model stands in strong contrast to that of the ‘conservative desert culture’ proposed by Gould, which has become untenable as data from arid zone excavations are increasingly argued to reflect significant changes in human economy, technology and demography through time. The results of regional survey and excavation from the Pilbara and sandy deserts of north-west Australia, from central Australia, the Flinders Ranges and adjacent dunefields and from semi-arid Queensland suggest that the occupation of the arid zone from the late Pleistocene on is likely to have been a highly dynamic process. The notion of a stable human adaptation to the diverse landforms and environments of the arid zone finds little support in the archaeological record.

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