Assume the following simplified relationship for D14C:     Assume 14C/Cstandard = 1

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Assume the following simplified relationship for D¹⁴C:

 

 

Assume ¹⁴C/C_standard = 1.176 x 10^-12 and C refers to stable ¹²C which accounts for 98.9% of all carbon.

a) find the approximate age of the oldest water in the ocean (i.e., time since it was last at the surface) 

b) determine how long it takes for water to move from the deep North Atlantic to the Indian Ocean. The half-life of ¹⁴C = 5730 years.