Contamination – parent isotope
Gain or loss in P changes the X-values regarding the data points:
Figure 6. Gain or loss of P.
, the examples in this paper include few data points. The best ones include a larger quantity of data while isochrons are performed with that few data points. The nearly inevitable result of contamination (failure of the system to remain closed) will be that the fit of the data to a line will be destroyed if the isochron line has a distinctly non-zero slope, and a fairly large number of data points. Continue reading
