Zircon dating

That observation is clearly at odds with the belief that world is only around 6000 years old.To counter the conclusions of radiometric dating creationists have formed the RATE (Radioisotopes and the Age of the Earth) Group.That means Earth cooled quickly enough for surface water and continental-type rocks just 100 million years after the moon impact, the massive collision that formed the Earth-moon system. ] "The zircons show us the earliest Earth was more like the Earth we know today," Valley said.

zircon dating-13

The notable exception was a helium diffusion experiment using zircon mineral samples from deep geothermal wells in Fenton Hill, New Mexico.The sequence is as follows: In order to stabilize the secondary ion signal and to remove surface contamination, the primary beam is focused on the sample surface for a certain time period prior to data acquisition.In this example (right), the duration of the presputtering was 3 min.Subsequently, intensities were measured in 15 magnet cycles.Isotopic ratios are then calculated using raw intensities corrected for electron multiplier dead-time and drift-corrected mid-analysis values.