Figure 1: From Brumm et al. (2010), an optimal Ar-Ar isochron that verifies the date is reliable.

Figure 1: From Brumm et al. (2010), an optimal Ar-Ar isochron that verifies the date is reliable. Remember that the best-fit line intercepts the Y-axis at 0.0034, that will be equal to a 40Ar/36Ar ratio of 297В±4. Because this value is uncertainty for the ratio that is atmospheric295.5), we realize ..Continue Reading