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If, in the year AD 1600, you had asked an educated European how old the planet Earth was and to recount its history he would have said that it was about 6000 years old and that its ancient history was given by the biblical account in Genesis.

If you asked the same question of an educated European in AD 1900 you would have received a quite different answer.

it is produced solely by a process of radioactive decay after the formation of the mineral.

Thus the current ratio of lead to uranium in the mineral can be used to determine its age.

Free 5-day trial Radiometric dating is used to estimate the age of rocks and other objects based on the fixed decay rate of radioactive isotopes.

Learn about half-life and how it is used in different dating methods, such as uranium-lead dating and radiocarbon dating, in this video lesson. As we age, our hair turns gray, our skin wrinkles and our gait slows.

It can be used to date rocks that formed from about 1 million years to over 4.5 billion years ago with routine precisions in the 0.1–1 percent range.

The dating method is usually performed on the mineral zircon.

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The term U–Pb dating normally implies the coupled use of both decay schemes in the 'concordia diagram' (see below).The story of this great change in the conception of the history of Earth is not a simple one.The chronicle of this great change can be broken into five periods; ran from AD 1600-1700.Did you know that you can be a Christian, and believe that the earth is billions of years old?You can even believe in evolution and be a Christian.The topic of radiometric dating has received some of the most vicious attacks by young earth creation science theorists.