Eoarchaean

The Eoarchaean (Eoarchean) is the first geological era in the Archaean eon that began 4 billion years ago, and ended 3.6 billion years ago.[1] Before it was the Hadean It is followed by the Palaeoarchaean.

The Eoarchaean is the earliest period of geology after the solidification of Earth's crust. The abiotic origins of life (abiogenesis) have been dated to a time window from 4 to 3.6 billion years ago when atmospheric pressure values ranged from c. 100 to 10 bar.[2][3][4]

  1. http://www.stratigraphy.org/ICSchart/ChronostratChart2013-01.pdf
  2. Mulkidjanian, A. Y. (2009). "On the origin of life in the zinc world: 1. Photosynthesizing, porous edifices built of hydrothermally precipitated zinc sulfide as cradles of life on Earth". Biol. Direct. 4: 26. doi:10.1186/1745-6150-4-26. PMC 3152778. PMID 19703272.
  3. "Origin of first cells at terrestrial, anoxic geothermal fields". Proc. Natl. Acad. Sci. USA. 109 (14): E821–E830. 2012. Bibcode:2012PNAS..109E.821M. doi:10.1073/pnas.1117774109. PMC 3325685. PMID 22331915. {{cite journal}}: Unknown parameter |authors= ignored (help)
  4. Mulkidjanian, A. Y. (2011). "Energetics of the First Life". In R. Egel, D.-H. Lankenau, and A. Y. Mulkidjanian (Ed.), Origins of Life: The Primal Self-Organization. Springer Verlag, Heidelberg.(book): 3–33.

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