“That is not my post, you are quoting a post from SunkenCiv. I did not say that I agree with SunkenCiv. However, his post gave me an idea for a simple way to estimate the age of the universe.”
I recognized that, but your calculation was based on the assumption, regardless of the source, it would require not less than the >4 billion age of the Earth to synthesize those elements. In fact five generations of stars undergoing a supernova can occur in as little as 15 million years. It is also incorrect if and when anyone assumes most of the elements greater in atomic weight than Carbon are produced only in the nucleosynthesis of a supernova. There are the means by which nucleosynthesis of these heavier elements occur without a supernova. You would need to recalculate using the range of lesser and greater time periods necessary to achieve the observed nucleotide decay rates of the elements with extraterrestrial origins found in the Earth.
I have not made any calulations yet, and I will not be using SunkenCiv’s numbers. My idea has nothing to do with
nucleosynthesis.