Start Dating a relative

Dating a relative

The "type" of rock is not sufficient to establish the samples being cogenetic.

There are a number of lava flows on the plateau that the canyon is cut into (yellow in Figure 1, above).

These lava flows are Cenozoic in age, and some of them spill into the canyon.

The ICR's Grand Canyon Dating Project does not strike a telling blow against the reliability of isochron dating.