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The Earth's magnetic field experiences reversals such that north becomes south. Researchers have dated volcanic ash that was formed immediately before ...
The precise dating of ancient charcoal found near a skull is helping reveal a unique period in prehistory.
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Carbon dating has a certain margin of error, usually depending on the age and material of the sample used.
Radiocarbon dating uses isotopes of the element carbon. Cosmic rays – high energy particles from beyond the solar system – bombard Earth’s upper atmosphere continually, in the process creating the unstable carbon-14. Because it’s unstable, carbon-14 will eventually decay back to carbon-12 isotopes.