A"C PER MILL, LAMONT NORMALIZATION 

 -50 100 -150 -200 -250 



APPARENT "C AGE RELATIVE TO STANDARD 19™ CENTURY WOOD 



+ 50 -50 -100 -150 -200 250 



A'X PER MILL, LAMONT NORMALIZATION 

 Fig. 2. Radiocarbon in the oceans according to Bien, Rakestraw and Suess (1962). 



The figure shown here deviates in some details from the one pubUshed in the 

 reference. The New Zealand values have been changed by 9%o according to informa- 

 tion received from G. J. Fergusson. Also some minor changes in the La JoUa data 

 were made corresponding to a better normalization of our standards. 



Upper part : A^'^C in the Pacific Ocean plotted as a function of latitude for surface- 

 water samples (open circles indicate La JoUa measurements, cross New Zealand 

 measurements), and for samples from approximately 3500 m depth (solid circles). 

 Note the low values of the surface waters south of 60°S latitude, showing that equili- 

 brium with the atmosphere has not been established. 



Middle part : Range of A ^^C at all depths in the Atlantic and in upwelling surface 

 waters off California. Normalization and the conversion of A^'^C to apparent ages. 

 Values, except that for the NBS oxalic acid standard, are normalized to a S^^C of 

 — 25%o relative to the Chicago PDB standard. 



Lower part : A^'^C as a function of depth in the Pacific Ocean. Crosses indicate New 

 Zealand measurements. Open circles show results on samples collected by J. A. Knauss, 

 and solid circles by J. E. Reid. 



