The example that is final in dining dining dining Table 2 is an expected 34 billion-year Rb-Sr isochron age on diabase for the Pahrump Group from Panamint Valley,
Ca, and it is referenced to guide by Faure and Powell (50). Once more, Woodmorappe (134) defectively misrepresents the important points. The “isochron” that Woodmorappe (134) refers to is shown in Figure 6 since it seems in Faure and Powell (50). The information don’t fall on any right line and usually do not, therefore, form an isochron. The initial information come from a study by Wasserburg as well as others (130), whom plotted the info as shown but failed to draw a 34-billion-year isochron on the diagram. The “isochrons” lines had been drawn by Faure and Powell (50) as “reference isochrons” solely for the intended purpose of showing the magnitude associated with the scatter in the information.
As talked about above, one function for the Rb-Sr isochron diagram is the fact that, to a good level, it really is self-diagnostic.
The scatter associated with the information in Figure 6 shows plainly that the test is a available system to 87 Sr (and maybe to many other isotopes too) and therefore no significant Rb-Sr age may be determined from all of these information.