Kristinmcconkey3024 Kristinmcconkey3024

29-11-2022
Geography

Answered

which pair of parent and daughter isotopes is not useful for dating very old rocks? 87rb-87sr why is this pair of parent and daughter isotopes not useful for dating very old rocks? because not enough of the daughter isotope has formed to be detectable why are isotopes with long half-lives not useful for dating fossils or rocks that span the last glacial-interglacial cycle, approximately between 12,000 and 125,000 years old? because very old rocks would never contained these isotopes

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