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New paper: heated chert from Australia +45 Ka, poss. > 55 Ka.
15% of analysed #lithics were heated and later knapped.
I would have liked more on technological aspects, to refine whether pieces worked before & after heating show differences in reduction etc.
link.springer.com/article/10.1...
Journal of Paleolithic Archaeology - We identify the oldest known example of systematic heat treatment of chert in the world. The specimens come from the base of one of Australia’s oldest...
