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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
general
Transient fertilization of a post-Sturtian Snowball ocean margin with dissolved phosphate by clay minerals
Nature Communications, Volume 14, No. 1, Article 8418, Year 2023
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Description
Marine sedimentary rocks deposited across the Neoproterozoic Cryogenian Snowball interval, ~720-635 million years ago, suggest that post-Snowball fertilization of shallow continental margin seawater with phosphorus accelerated marine primary productivity, ocean-atmosphere oxygenation, and ultimately the rise of animals. However, the mechanisms that sourced and delivered bioavailable phosphate from land to the ocean are not fully understood. Here we demonstrate a causal relationship between clay mineral production by the melting Sturtian Snowball ice sheets and a short-lived increase in seawater phosphate bioavailability by at least 20-fold and oxygenation of an immediate post-Sturtian Snowball ocean margin. Bulk primary sediment inputs and inferred dissolved seawater phosphate dynamics point to a relatively low marine phosphate inventory that limited marine primary productivity and seawater oxygenation before the Sturtian glaciation, and again in the later stages of the succeeding interglacial greenhouse interval. © 2023, The Author(s).
Authors & Co-Authors
Chi-Fru, Ernest
United Kingdom, Cardiff
Cardiff University
Bankole, Olabode M.
France, Paris
Cnrs Centre National de la Recherche Scientifique
Aubineau, Jérémie
France, Toulouse
Observatoire Midi-pyrénées
El-Albani, Abderrazak
France, Paris
Cnrs Centre National de la Recherche Scientifique
Oldroyd, Anthony
United Kingdom, Cardiff
Cardiff University
Skelton, Alasdair D.L.
Sweden, Stockholm
Stockholms Universitet
Fantong, Wilson Yetoh
Unknown Affiliation
Mills, Benjamin J.W.
United Kingdom, Leeds
University of Leeds
Alcott, Lewis J.
United Kingdom, Leeds
University of Leeds
Konhauser, Kurt O.
Canada, Edmonton
University of Alberta
Lyons, Timothy W.
United States, Riverside
University of California, Riverside
Statistics
Citations: 1
Authors: 11
Affiliations: 7
Identifiers
Doi:
10.1038/s41467-023-44240-9
ISSN:
20411723