True ages of rocks might be distorted through Earth’s history

6 abril 2015

Rocks do not loose their memory during Earth history but their true ages might be distorted: even under ultra high-temperature metamorphic conditions exceeding 1200°C zircon maintains its lead content accumulated during radioactive decay of uranium and thorium.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/y__iIJ9jN1s/150406165501.htm

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