Can long half-life radioisotopes that exhibit billions of years worth of decay, based on experimentation and observations about their physical reality be assumed to actually be billions of years old?
“Can long half-life radioisotopes that exhibit billions of years worth of decay, based on experimentation and observations about their physical reality be assumed to actually be billions of years old?”
The assumption is based on the radioisotopes becoming settled when the rock solidified, and assuming that there was a specific kind of composition that existed in the molten magma when the rock cooled.