Dating sites mn
(I believe this argument was originally put forth by Mormon young-Earther Melvin Cook, in a letter to the editor which was published in .) But helium can and does escape from the atmosphere, at rates calculated to be nearly identical to rates of production.
In order to obtain a young age from their calculations, young-Earthers handwave away mechanisms by which helium can escape.
) and they are historically the ones posted to talk.origins more than any others.
There is evidence that energy from the Earth's accumulation caused the surface to be molten.
The actual underlying assumption is that, if those requirements have not been met, there is no reason for the data points to fall on a line.
The resulting plot has data points for each of five meteorites that contain varying levels of uranium, a single data point for all meteorites that do not, and one (solid circle) data point for modern terrestrial sediments.
A young-Earther would object to all of the "assumptions" listed above.
However, the test for these assumptions is the plot of the data itself.