Deletion of How to calculate Earth's Age

Comment: or, failing that, redirect) as above.   a how-to guide.  Content appears copied from textbook (article's only source) and relies on assumptions not sourced.  We understand it, we just don't think it's necessary to WP
Stance: delete
Cited policy: Wikipedia:What Wikipedia is not (WP:NOT)

Comment: A page on historical calculations of the age of the Earth would be useful (and not necessarily a how-to, even if it gave enough info to duplicate the work).  This one is problematic because it appears to be a |new method, and even worse, it's just wrong, based on a false assumption (equal distribution of isotopes), as pointed out by Rickert on Talk:Age of the Earth.  Redirect is unecessary, although might be useful to prevent recreation
Stance: delete
Cited policy: Wikipedia:No original research (WP:NOR)