Evidence of Terrestrial Life and an O2-rich Atmosphere in the Oldest (~3.4 Ga) Paleosol in the East Pilbara Craton, Western Australia

@inproceedings{Johnson2010EvidenceOT,
  title={Evidence of Terrestrial Life and an O2-rich Atmosphere in the Oldest (~3.4 Ga) Paleosol in the East Pilbara Craton, Western Australia},
  author={Ian M. Johnson and Yutaka X. Watanabe and Brent S. Stewart and Hiroshi Ohmoto},
  year={2010}
}
Buick [1] discovered the Earth’s oldest emergent land surface (unconformity) in the Pilbara Craton Western Australia and was the first to postulate that a ~50m thick clay-rich alteration zone beneath it may represent the Earth’s oldest (~3.4 Ga) paleosol. Our subsequent investigations have revealed the presence of a series 20-100 m thick, ~0.5 to 1km long, tabular alteration zones at 9 localities directly beneath the unconformity on the flanks of two ~3.5 Ga granitic domes. These localities are… CONTINUE READING

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