Table 2: Periods of spectral maxima (year) for the five series used here.
238U232Thδ234U230Th/238U230 Th/232Th
74005500740044004400
23002600260020001930
70014301400600700
330600900240600
200360350150240
130150250130150
94135180120135
838313011068
677610490
6780

Written: 12.7.20     Last Updated: 12.7.20