Chi Fru, Ernest  ORCID: https://orcid.org/0000-0003-2673-0565, Aubineau, Jérémie, Bankole, Olabode, Ghnahalla, Mohamed, Tamehe, Landry Soh and El Albani, Abderrazak
2024.
Hydrothermal seawater eutrophication triggered local macrobiological experimentation in the 2100 Ma Paleoproterozoic Francevillian sub-basin.
Precambrian Research
409
, 107453.
10.1016/j.precamres.2024.107453
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Abstract
It is thought that the global predominance of small-size unicellular prokaryotic life in the oceans until the emergence of large-size multicellular organisms to ecological dominance in the Ediacaran Ocean after 635 million years ago (Ma), was partly constrained by paleo-dynamic nutrient limitation, with phosphorus (P) being the principal limiting resource. Here we couple an episode of intense submarine hydrothermal alteration of a nutrient-rich seafloor reservoir to the collision of the Congo-São Francisco cratons at ∼2100 Ma, to unravel a paleo-geodynamic incident of seawater P enrichment in the Paleoproterozoic Francevillian sub-basin. We propose that this previously unrecognized local pulse in dissolved seawater P concentration, of comparable magnitude to Ediacaran seawater levels, set the stage for Earth’s earliest biospheric experimentation towards macrobiological complexity ∼2100 million years ago.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Earth and Environmental Sciences |
| Publisher: | Elsevier |
| ISSN: | 0301-9268 |
| Date of First Compliant Deposit: | 10 June 2024 |
| Date of Acceptance: | 25 May 2024 |
| Last Modified: | 31 May 2025 01:45 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/169710 |
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