Going back in time in the volcanic Comoros archipelago
… but not for lava flows as the wood is completely burnt away,” points out Xavier Quidelleur, who prefers the … decay of potassium-40 (40K). This assumes that potassium was present in the rocks when they were formed, that they … The team has taken various samples from lava flows, as well as a charcoal sample for radio carbon dating. “In …
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