Dating innacurate

31-Jul-2017 09:40

There are about two dozen decay pairs used for dating.

Uranium 235 decay to lead has a half-life of 713 million years, so it is well suited to dating the universe.

It depends upon radioactive decay, which is known to be extremely stable, not influenced my chemical processes, and which can be measured quite accurately.

other isotope pairs cover intermediate time periods between the spans for carbon 14 and uranium.