Water Masses and Thermohaline Circulation
To solve this problem you need to know the half life of C-14. The half life of C-14
is about 5500 years. So, if the radioactivity of the sample of seawater collected at
depth had been only 1/2 the original (the surface water), the sampled water
would be 2700 years old. But its radioactivity is 1/4 of its original. So the age of
the ...