What rocks are used for radiometric dating

Age estimates which are obviously wrong or contradictory are sometimes produced.

In some outcrops pillow structures have been preserved, testimony to the basalt lavas having originally erupted and flowed under water onto the Creation Week ocean floor.Metamorphic rocks are not always easy to date using radio-isotopes.Theoretically, Creationism remains workable within a wide range of age estimates.Scientists have proposed numerous age estimation methods.It disintegrates at a measured rate into calcium and argon.

Similarly, the radioactive element uranium decomposes into lead and some other elements. 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.Two of the most widely-known systems are the potassium-argon method and the uranium-lead method.A radioactive form of potassium is found in minute quantities in some rocks.And it does not work on rocks or thoroughly mineralized fossils; it is only useful for relatively well-preserved organic materials such as cloth, wood, and other non-fossilized materials.