Answer by John for How do we know how much Uranium was in any given sample...
Lead and uranium have completely different electro-chemical properties. So as David mentioned it does not matter how much uranium the sample had (as long as it is enough to measure) what matters is...
View ArticleAnswer by Fred for How do we know how much Uranium was in any given sample...
The field of nuclear physics has established the radioactive decay series for radioactive elements (see here as well).Unlike Uranium 238, Uranium 234 is not primordial nuclide. It is a indirect decay...
View ArticleAnswer by David Hammen for How do we know how much Uranium was in any given...
The chemistry of lead is very different from that of uranium and thorium. There are key kinds of rock that could not possibly have been formed with even the smallest amount of primordial lead. The...
View ArticleHow do we know how much Uranium was in any given sample when it was deposited?
Concerning "Uranium-series dating", also known as "Uranium-thorium dating". Uranium is present in deposits, "typically at levels of between a few parts per billion and few parts per million by weight",...
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