The study of the relative or absolute age of rocks, minerals and fossils.

对岩石、矿物和化石的相对年龄或绝对年龄的研究。

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Absolute age and paleomagnetism have been subjected to intensive studies.

绝对年龄和古地磁也已得到深入研究。

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Absolute age and paleomagnetism have been subjected to intensive studies.

绝对年龄和古地磁也已得到深入研究。

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