Radioactive dating for fossils

Using radiometric dates and measurements of the ancient magnetic polarity in volcanic and sedimentary rocks termed paleomagnetismgeologists have been able to determine precisely when magnetic reversals occurred in the past. Faure, G. For example, unstable 14 C transforms to stable nitrogen 14 N. Layers of rock are deposited horizontally at the bottom of a lake principle of original horizontality.





Ludwig, K.








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