| Should a point plot below the line, it could indicate that a particular sample was open to migration of the dating elements or that the sample was contaminated and lay below the isochron when the rock solidified. |
| Isochron dating has been developed in an attempt to solve such problems. |
| Isochron dating: Isochron dating was introduced as an attempted substitute for K-Ar dating, after K-Ar's faulty assumptions were exposed. |
| Subsequently, they used spatial interpolation methods to generate isochron maps that plotted the mean rates of spread of farming in two dimensions. |
| Anns Leucogranite has yielded a younger, Cambrian age using the Rb-Sr isochron method and may represent a later phase of plutonism. |
| Within the context of Kirchhoff migration, this stretch is associated to the variation in the curvature of isochron surfaces for different times on an input seismic trace. |
