An abiotic model for stromatolite morphogenesis

  title={An abiotic model for stromatolite morphogenesis},
  author={J. Grotzinger and D. Rothman},
  • J. Grotzinger, D. Rothman
  • Published 1996
  • Biology
  • Nature
  • STROMATOLITES are laminated, accretionary structures, which are commonly regarded to have formed by the sediment-binding or precipitating activities of ancient microbial mats or biofilms (composed mainly of cyanobacteria), possibly supplemented by abiotic surface precipitation1–4. Stromatolites are thus considered to be a proxy for early life on Earth, as the record of these structures extends back to 3.5 Gyr ago5. But as stromatolites only rarely contain fossil microbes, their biogenicity is… CONTINUE READING
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