A couple of months ago you may have heard of an exciting new study on the sources of rock for making stone tools in the Salish Sea. “Glaciers brought mountain to man“, the headlines said, affirming that archaeologists working on Galiano Island had found nodules of raw material, not yet worked into tools, from the Mt. Garibaldi area of the lower mainland. If, like me, you have a rudimentary knowledge of Salish Sea archaeology, you probably leapt to the conclusion that the raw material would be from the Garibaldi obsidian source. So, cool: the mountain moves to Mohammed after all. But, despite my being fairly disapproving of both sobriety and thinking in general, sober second thought did have me wondering: is it even possible that glaciers carried raw material from Garibaldi to Gabriola? And from the relatively small and isolated high-altitude obsidian sources to a prominent village site? ” It was brought there by glaciers, conveniently, 12,000 years ago”, the article asserts – thousands of years past the local ice maximum. It didn’t easily compute. Luckily I was emailing with one of the paper’s authors, Dr. Colin Grier from Washington State University, and he set me straight on how the new article came to have something of a misleading takeaway point, while shedding some light on his recent interactions with the press.
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