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Question
The age of most ancient geological formations is estimated by
Options:
A .  Ra - Si method
B .  Potassium - argon method
C .  C14 method
D .  Uranium - lead method
Answer: Option D
The Uranium Lead Method, also known as the U-Pb method, is one of the most ancient and reliable radiometric dating methods. It is used to date rocks and crystals that were formed more than a billion years ago. It has a range of dating samples that are about 1billion to 4.5billion years old. It has a precision rate of 0.1−1 percent.

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