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25-Jul-2017 23:11

Trees undergo spurts in growth in the spring and summer months while becoming somewhat dormant in the fall and winter months.

Accordingly, by measuring the concentration of these cosmogenic nuclides in a rock sample, and accounting for the flux of the cosmic rays and the half-life of the nuclide, it is possible to estimate how long the sample has been exposed to cosmic rays.

These nuclides are generally referred to as naturally occurring radioactivity and are derived from the radioactive decay of thorium and uranium.



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