Human Refugia in Australia During the Last Glacial Maximum and Terminal Pleistocene: a Geospatial Analysis of the 25E12 Ka Australian Archaeological Record
Journal of Archaeological Science 40 (2013) 4612e4625 Contents lists available at SciVerse ScienceDirect Journal of Archaeological Science journal homepage: http://www.elsevier.com/locate/jas Human refugia in Australia during the Last Glacial Maximum and Terminal Pleistocene: a geospatial analysis of the 25e12 ka Australian archaeological record Alan N. Williams a,*, Sean Ulm b, Andrew R. Cook c, Michelle C. Langley d, Mark Collard e a Fenner School of Environment and Society, The Australian National University, Building 48, Linnaeus Way, Canberra, ACT 0200, Australia b Department of Anthropology, Archaeology and Sociology, School of Arts and Social Sciences, James Cook University, PO Box 6811, Cairns, QLD 4870, Australia c School of Biological, Earth and Environmental Sciences, The University of New South Wales, NSW 2052, Australia d Institute of Archaeology, University of Oxford, Oxford OX1 2PG, United Kingdom e Human Evolutionary Studies Program and Department of Archaeology, Simon Fraser University, Burnaby, British Columbia, Canada article info abstract Article history: A number of models, developed primarily in the 1980s, propose that Aboriginal Australian populations Received 13 February 2013 contracted to refugia e well-watered ranges and major riverine systems e in response to climatic Received in revised form instability, most notably around the Last Glacial Maximum (LGM) (w23e18 ka). We evaluate these 3 June 2013 models using a comprehensive continent-wide dataset of archaeological radiocarbon ages and geospatial Accepted 17 June 2013 techniques. Calibrated median radiocarbon ages are allocated to over-lapping time slices, and then K-means cluster analysis and cluster centroid and point dispersal pattern analysis are used to define Keywords: Minimum Bounding Rectangles (MBR) representing human demographic patterns.
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