Evidence from detrital zircons for the existence of continental crust and oceans on the Earth 4.4 Gyr ago

@article{Wilde2001EvidenceFD,
  title={Evidence from detrital zircons for the existence of continental crust and oceans on the Earth 4.4 Gyr ago},
  author={Simon A. Wilde and John W. Valley and William H. Peck and Colin M. Graham},
  journal={Nature},
  year={2001},
  volume={409},
  pages={175-178}
}
No crustal rocks are known to have survived since the time of the intense meteor bombardment that affected Earth between its formation about 4,550 Myr ago and 4,030 Myr, the age of the oldest known components in the Acasta Gneiss of northwestern Canada. But evidence of an even older crust is provided by detrital zircons in metamorphosed sediments at Mt Narryer and Jack Hills in the Narryer Gneiss Terrane, Yilgarn Craton, Western Australia, where grains as old as ∼4,276 Myr have been found. Here… 
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Little is known about the character of the Hadean crust. Geochemical analyses of the 4-billion-year-old Acasta Gneiss from Canada suggest Earth’s earliest crust formed from a mafic reservoir, similar
Episodic growth of the Gondwana supercontinent from hafnium and oxygen isotopes in zircon
TLDR
The first study that integrates hafnium and oxygen isotopes, all measured in situ on the same, precisely dated detrital zircon grains reveals that crust generation in part of Gondwana was limited to major pulses at 1.9 and 3.3 Gyr ago, and that the zircons crystallized during repeated reworking of crust formed at these times.
Hadean diamonds in zircon from Jack Hills, Western Australia
TLDR
Mineralogical features of the Jack Hills diamonds resemble those of diamonds formed during ultrahigh-pressure metamorphism and imply a relatively thick continental lithosphere and crust–mantle interaction at least 4,250 million years ago.
4.4 billion years of crustal maturation: oxygen isotope ratios of magmatic zircon
Analysis of δ18O in igneous zircons of known age traces the evolution of intracrustal recycling and crust-mantle interaction through time. This record is especially sensitive because oxygen isotope
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Nature of the Earth's earliest crust from hafnium isotopes in single detrital zircons
Continental crust forms from, and thus chemically depletes, the Earth's mantle. Evidence that the Earth's mantle was already chemically depleted by melting before the formation of today's oldest
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