Radioactive dating gold

Posted by / 28-Oct-2020 18:58

That’s what we learned in high school and on the Discovery Channel.

It has become increasingly clear that these radiometric dating techniques agree with each other and as a whole, present a coherent picture in which the Earth was created a very long time ago.But Bowring says his choices were judicious, although “necessarily somewhat subjective.” In some of his zircons, the two different uranium-lead ratios gave different ages, suggesting that lead had leaked out of those zircons during the past quarter-billion years.And other zircon ages looked distinctly old, as if those zircons had crystallized earlier than the rest and had later gotten mixed in with them.Samuel Bowring (MIT), for instance, got a date for the P-T extinction that, while it seemed to match some dates for massive Siberian lava flows, disagreed with the age Mundil prefers: Mundil, however, doesn’t believe that either the eruption or the extinction happened that recently.He thinks Bowring engaged in “arbitrary data culling” by throwing out more than half his zircon ages before averaging the rest of them together.

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