The tungsten isotopic composition of the Earth’s mantle before the terminal bombardment

@article{Willbold2011TheTI,
  title={The tungsten isotopic composition of the Earth’s mantle before the terminal bombardment},
  author={Matthias Willbold and Tim Elliott and Stephen Erwin Moorbath},
  journal={Nature},
  year={2011},
  volume={477},
  pages={195-198}
}
Many precious, ‘iron-loving’ metals, such as gold, are surprisingly abundant in the accessible parts of the Earth, given the efficiency with which core formation should have removed them to the planet’s deep interior. One explanation of their over-abundance is a ‘late veneer’—a flux of meteorites added to the Earth after core formation as a ‘terminal’ bombardment that culminated in the cratering of the Moon. Some 3.8 billion-year-old rocks from Isua, Greenland, are derived from sources that… 
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