Originally Posted by Idaho_Shooter


The age of the Earth is estimated at 14.5 billion. The half life of U238 is 4.5 billion. So that indicates at formation of the Earth, there was a bit more than 8 times as much U238 present as is today. There are 16 (iirc) intermediate steps including Thorium, before an atom of U238 becomes lead, each step with its own half life number.

Hardly the same as "Every bit of U238 would be lead today."



I'm sure it won't be long before the fallacy is brought up again, and again.

Last edited by DBT; 06/16/20.