Sentences with phrase «zircon crystallization»
• Zircon crystallization and eruption occurred coevally at Ma at DETERMINING AGE OF ROCKS AND FOSSILS FRANK K. MCKINNEY THE AGE of fossils intrigues almost everyone.
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• Zircon crystallization and eruption occurred coevally at Ma at The combination of U-Th disequilibrium / U-Pb and (U-Th) / He dating of zircon (ZDD) has provided a relatively new radiometric approach suitable for dating
• Zircon crystallization and eruption occurred coevally at Ma at
Not exact matches
The clusters of lead atoms formed 1 billion years after crystallization of the zircon, by which time the radioactive decay of uranium had formed the lead atoms that then diffused into clusters during reheating.
Zircons are natural timekeepers because, during crystallization, they incorporate radioactive uranium and thorium, but exclude lead.