Zircon Thermometer Reveals Minimum Melting Conditions on Earliest Earth

@article{Watson2005ZirconTR,
  title={Zircon Thermometer Reveals Minimum Melting Conditions on Earliest Earth},
  author={E. Watson and T. M. Harrison},
  journal={Science},
  year={2005},
  volume={308},
  pages={841 - 844}
}
Ancient zircons from Western Australia's Jack Hills preserve a record of conditions that prevailed on Earth not long after its formation. Widely considered to have been a uniquely violent period geodynamically, the Hadean Eon [4.5 to 4.0 billion years ago (Ga)] has recently been interpreted by some as far more benign—possibly even characterized by oceans like those of the present day. Knowledge of the crystallization temperatures of the Hadean zircons is key to this debate. A thermometer based… Expand

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