Someone on another forum brought this up and someone replied that the test doesn't work for young dates (something similar to this anyway). If the test is useless for yound dates, what grounds can we have any certainty that it works for longer periods of time?
This particular topic needs to be in (and has been addressed in) the Dates and dating forum, but let me answer briefly:
1) Austin and his pals were dating pieces of old rock that had not been completely "reset" by melting in the surrounding fresh magma.
2) Potassium-argon dating is, indeed, better suited for dates in the many millions of years than dates of just a couple of million. This is analogous to why a machinist doesn't use a yardstick to measure a piston to the nearest thousandth of an inch: it's not the proper tool for that job. Yardsticks work fine for telling how long the whole car is, but don't have the resolution for boring cylinders.
This message has been edited by Coragyps, 05-13-2004 09:20 PM