Theoretically, Creationism remains workable within a wide range of age estimates.
Scientists have proposed numerous age estimation methods.
Phosphate fertilizers are made from material typically high in uranium, so they usually contain high amounts of it.
Uranium in the environment Although uranium is radioactive, it is not particularly rare.
When asked for your age, it's likely you won't slip (with the exception of a recent birthday mistake).
But for the sprawling sphere we call home, age is a much trickier matter.
The lowest age defended on a scientific basis is in the 6 to 10 thousand year range.
Evolutionism, of course, requires billions of years to support the plausibility of life's emergence and of subsequent Evolution from “amoeba” to man.
Kelvin defended this calculation throughout his life, even disputing Darwin's explanations of evolution as impossible in that time period.
Choose: No Frames Layout Choose: Human Evolution Frames .
I have integrated this web page on human evolution into an electronic text, " Nature's Holism - Holism.
This require uranium to be enriched with the uranium-235 isotope and the chain reaction to be controlled so that the energy is released in a more manageable way.
The isotope uranium 238 is used to estimate the age of the earliest igneous rocks and for other types of radiometric dating.