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Spruce and tamarack logs dating from the Younger Dryas and Early Holocene (YD–EH; ∼12.9–11.3k cal a BP) were found at Bell Creek in the Lake Ontario lowlands of the Great Lakes region, North America. A 211‐year tree‐ring chronology dates to ∼11 755–11 545 cal a BP, across the YD–EH transition. A 23‐year period of higher year‐to‐year ring‐width variability dates to around 11 650 cal a BP, infers strong...
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