I went for 3 or 4 pages after this post.
It is NOT Carbon that would matter, it is Carbon14 and it is that Carbon14 has a half life of 5730 years. Which means after 5730 years half the carbon14 in a sample will have decayed to Carbon12. Another 5730 years and half of what was left will have decayed.
Actually small amounts of 14C can be found fossils and even rocks, including diamonds and coal but it is not cosmogenic 14C. It can come from either bacteria in the area or Uranium reacting with 12C or 13C. But like you say, dating such objects by carbon dating is beyond ridiculous.
Upvote
0

