Problems with radiometric dating methods best dating canada
Every few years, new geologic time scales are published, providing the latest dates for major time lines.Older dates may change by a few million years up and down, but younger dates are stable.
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.
In fact, they track because radiometric data is accurate.
An expert scientist summarizes: "The first radiometric dates, generated about 1920, showed that the Earth was hundreds of millions, or billions, of years old.
There are three reasons why radiometric data is known to be accurate: 1.