As time progressed each would begin to acquire its slower modern-day stable half-life, but would they all acquire these stable rates in a uniformity which would keep them all in synchrony? If they did, all would give the same ages, you are right.Each would probably arrive at equilibrium at different times.
Carbon dating makes an animal living 4 thousand years ago (when there was less atmospheric carbon) appear to have lived thousands of years before it actually did.
A great book on the flaws of dating methods is "Radioisotopes and the age of the earth" (edited by Larry Vardiman, Andrew Snelling, Eugene F. Published by Institute for Creation Research; December 2000) Dating methods are based on 3 unprovable and questionable assumptions: 1) That the rate of decay has been constant throughout time. That the isotope abundances in the specimen dated have not been altered during its history by addition or removal of either parent or daughter isotopes 3) That when the rock first formed it contained a known amount of daughter material ("Radioisotopes and the age of the earth" pg v) We must recognize that past processes may not be occurring at all today, and that some may have occurred at rates and intensities far different from similar processes today.
When each of these elements, uranium, potassium, radium etc.
were switched on, it would only be natural for them to behave according to their individual properties, eventually acquiring stable half-lives of decay, at different rates.
What would happen if a dinosaur bone were carbon dated?
- At Oak Ridge National Laboratory, Scientists dated dinosaur bones using the Carbon dating method.
Wouldn't this make all the rocks appear the same age?
"The rock question is fairly simple and has to do with the basic elements which made up these rocks in the beginning.
16.000 years by the way is still 10,000 years before your God supposedly created the Earth." Amy M 12/11/01 My response: I explain the limits of Carbon dating below.
One thing you might want to ask yourself though, is how do you know it is millions of years old, giving an "incorrect" date (one that you think is too young) or if it actually is only a few thousand years old.
As far as your comments that 16,000 years is older than when God created the earth, we know that there is more carbon in the atmosphere than there was a thousand years ago. It is somewhat accurate back to a few thousand years, but carbon dating is not accurate past this. However, this does not mean that the earth is 30 thousand years old. Because of the earths declining magnetic field, more radiation (which forms C14) is allowed into the earths atmosphere.