C14 carbon dating

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The presence of bomb carbon in the earth's biosphere has enabled it to be used as a tracer to investigate the mechanics of carbon mixing and exchange processes.

Ellen Druffel has called this the silver lining in thermonuclear bomb testing.

De Vries (1958) was the first person to identify this 'Atom Bomb' effect.

The effect has been suggested as providing dates in error for the eruption of Thera which has been linked to the demise of the Minoan civilisation in the Aegean.

One modern plant growing near the emanations had an apparent age of 1390 yr.

This apparent age of oceanic water is caused both by the delay in exchange rates between atmospheric CO2 and ocean bicarbonate, and the dilution effect caused by the mixing of surface waters with upwelled deep waters which are very old (Mangerud 1972).

A reservoir correction must therefore be made to any conventional shell dates to account for this difference.

Reservoir corrections for the world oceans can be found at the Marine Reservoir Correction Database, a searchable database online at Queen's University, Belfast and the University of Washington.

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