| Isochron dating has been developed in an attempt to solve such problems. |
| New zircon U-Pb and Rb-Sr mineral isochron ages, together with previously published results, indicate that these granites were emplaced in Late Palaeozoic to Late Mesozoic times. |
| However, isochron dating bears faulty assumptions of its own. |
| The emplacement of the collision-type Halatu granites took place at ca. 230 Ma based on whole rock, Rb-Sr isochron and zircon Pb evaporation analyses. |
| Subsequently, they used spatial interpolation methods to generate isochron maps that plotted the mean rates of spread of farming in two dimensions. |
| Isochron dating: Isochron dating was introduced as an attempted substitute for K-Ar dating, after K-Ar's faulty assumptions were exposed. |
