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. 2015 Nov 30;5:17442. doi: 10.1038/srep17442

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(a) The NGRIP ice core δ¹⁸O record, (b) the SC03 stalagmite δ¹⁸O record from Secret Cave, Gunung Mulu National Park, Borneo³², (c) the El Condor Cave (ELC) stalagmite δ¹⁸O record from northern Peru⁶, and (d) the EDML δ¹⁸O record from Antarctica³³. The records are arranged by latitude. The grey box indicates the timing of the Toba supereruption at 73.72 ka BP. The ice core records are synchronised on the AICC2012 timescale, and both stalagmite records are dated independently using ²³⁰Th dating.