Pb and cs dating
The overall result is that radium-226 is found at low and essentially unchanging levels in soils everywhere.metal), if it is produced in soils close to the air-soil interface.Here is one example of an isochron, based on measurements of basaltic meteorites (in this case the resulting date is 4.4 billion years) [Basaltic1981, pg. Skeptics of old-earth geology make great hay of these examples.For example, creationist writer Henry Morris [Morris2000, pg.Compounds of lead are usually found in the 2 oxidation state, rather than the 4 common with lighter members of the carbon group.
Dating schemes based on rates of radioactivity have been refined and scrutinized for several decades.
The Pb-210 method is used to determine the accumulation rate of sediments in lakes, oceans and other water bodies.