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Which isotope is appropriate for dating rocks that are billions of years old?

Which isotope is appropriate for dating rocks that are billions of years old?
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Which isotope is appropriate for dating rocks that are billions of years old?

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User Patmortech
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Answer:

The answer would be uranium-238. I know it’s right cause I got a 100%.

answered
User Mike Gohl
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Uranium-238.

Uranium - 238' s half lif time is 4.5 billion years. This isotope decays until the stable isotope Lead - 206.

It has been used to date the oldest rocks of the earth with a resulting age of approximately 4.0 billion years old.


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User Kannan K
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