Three facts about radiometric dating
But even when questionable specimens are rejected, many results are still unusable, and explained away by contamination.
Furthermore, since the dynamic Flood of Noah's day covered the entire globe, what rock could have escaped its effects?
Students begin by observing a photograph and a diagram of rock layers near Whanganui, watch an animation about how the layers were formed, then use an interactive labelling diagram to work out the order in which the rocks were created.
The activity offers literacy opportunities as well as practice using the science capability 'Interpret representations'.
Creationists have, in particular, pointed out the weak assumptions on which the method is based, and the contradictory nature of its results.
A research consortium has recently convened at ICR to go further and develop a workable understanding of the radioisotope decay data from a young-earth perspective.
For example, the existence of short half-life polonium halos in rock have been used by many to argue for rapid formation (i.e., creation) of host rocks.
We know of many ways in which the materials can be made mobile, most particularly through ground water leaching.
Some of the most useful fossils for dating purposes are very small ones.