Metasomatic Origin of Quartz-Pyroxene Rock, Akilia, Greenland, and Implications for Earth's Earliest Life

@article{Fedo2002MetasomaticOO,
  title={Metasomatic Origin of Quartz-Pyroxene Rock, Akilia, Greenland, and Implications for Earth's Earliest Life},
  author={Christopher M. Fedo and Martin J. Whitehouse},
  journal={Science},
  year={2002},
  volume={296},
  pages={1448 - 1452}
}
A quartz-pyroxene rock interpreted as a banded iron formation (BIF) from the island of Akilia, southwest Greenland, contains13C-depleted graphite that has been claimed as evidence for the oldest (>3850 million years ago) life on Earth. Field relationships on Akilia document multiple intense deformation events that have resulted in parallel transposition of Early Archean rocks and significant boudinage, the tails of which commonly form the banding in the quartz-pyroxene rock. Geochemical data… Expand
Does a Heavy Fe-Isotope Composition of Akilia Quartz-Amphibole-Pyroxene Rocks Necessitate a BIF Origin?
TLDR
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Deformation features and critical field relationships of early Archaean rocks, Akilia, southwest Greenland
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Clues from Fe Isotope Variations on the Origin of Early Archean BIFs from Greenland
TLDR
The observed enrichments are compatible with the transport, oxidation, and subsequent precipitation of ferrous iron emanating from hydrothermal vents and thus suggest that the original rocks were banded iron formations (BIFs), which support a sedimentary origin for the Akilia banded rocks, which represent one of the oldest known occurrences of water-laid deposits on Earth. Expand
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TLDR
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Reassessing the evidence for the earliest traces of life
TLDR
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