[AndyTheBear]

If the body is buried in an area where radioactive isotopes occurr naturally in groundwater, then the age of the bones, which have been absorbing these isotopes slowly over the years, can be dated.

What kind of variance is there in the rate of absorption? Wouldn't the amount of current in the water, the amount of surface area exposure, the size and quantity of the pours on the bone and such have to be accurately estimated to know it?

[SatinDoll]

I really don’t know any particulars, just that this process has been used to determine the age of buried material capable of slowly fossilyzing by absorption of water containing radioactive isotopes.