Uranium 238 dating rocks
In metamorphic rocks, new minerals form that are more stable at higher temperatures and pressures.
From these observations early attempts were made to use the dimensions of haloes as an age dating technique.
s the creation/evolution debate continues, there has been an increasing sophistication of certain Creationist arguments and publications.
It can be an especially difficult challenge when the Creationist author has professional credentials and has published in mainstream scientific journals.
Plutonic rocks on the other hand cool very slowly, on the order of a million years or more for some deeply buried and insulated magmas.
The mineral grains in these rocks can grow very large and are readily distinguished in hand samples.