Determine age fossils carbon dating

So, the fossil is 8,680 years old, meaning the living organism died 8,680 years ago.

The perpetrators, this new work suggests, were not asteroids, volcanoes, or raging coal fires, all of which have been implicated previously.But calculations by the MIT team showed that these eruptions were not nearly sufficient to account for the carbon seen in the sediments.Even more significantly, the observed changes in the amount of carbon over time don’t fit the volcanic model.The reason for the sudden, explosive growth of the microbes, new evidence shows, may have been their novel ability to use a rich source of organic carbon, aided by a sudden influx of a nutrient required for their growth: the element nickel, emitted by massive volcanism at just that time.The new solution to this mystery is published this week in the Proceedings of the National Academy of Sciences by MIT professor of geophysics Daniel Rothman, postdoc Gregory Fournier, and five other researchers at MIT and in China.

Leave a Reply