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dc.contributor.authorStueeken, Eva Elisabeth
dc.contributor.authorBellefroid, Eric
dc.contributor.authorPrave, Anthony Robert
dc.contributor.authorAsael, Dan
dc.contributor.authorPlanavsky, Noah
dc.contributor.authorLyons, Timothy
dc.identifier.citationStueeken , E E , Bellefroid , E , Prave , A R , Asael , D , Planavsky , N & Lyons , T 2017 , ' Not so non-marine? Revisiting the Stoer Group and the Mesoproterozoic biosphere ' , Geochemical Perspectives Letters , vol. 3 , no. 2 , pp. 221-229 .
dc.identifier.otherORCID: /0000-0002-4614-3774/work/64033687
dc.identifier.otherORCID: /0000-0001-6861-2490/work/65014403
dc.descriptionFunding for this project was provided by the NASA postdoctoral program (EES), the Lewis and Clark Fund (EES), an NSERC PGS-D grant (EJB), the NSF ELT (TWL, NJP) and FESD (TWL) programs, and the NASA Astrobiology Institute (TWL, NJP).en
dc.description.abstractThe Poll a’Mhuilt Member of the Stoer Group (Torridonian Supergroup) in Scotland has been heralded as a rare window into the ecology of Mesoproterozoic terrestrial environments. Its unusually high molybdenum concentrations and large sulphur isotope fractionations have been used as evidence to suggest that lakes 1.2 billion years ago were better oxygenated and enriched in key nutrients relative to contemporaneous oceans, making them ideal habitats for the evolution of eukaryotes. Here we show with new Sr and Mo isotope data, supported by sedimentological evidence, that the depositional setting of this unit was likely connected to the ocean and that the elevated Mo and S contents can be explained by evapo-concentration of seawater. Thus, it remains unresolved if Mesoproterozoic lakes were important habitats for early eukaryotic life.
dc.relation.ispartofGeochemical Perspectives Lettersen
dc.subjectEukaryote evolutionen
dc.subjectStoer Groupen
dc.subjectGeochemistry and Petrologyen
dc.subjectSDG 14 - Life Below Wateren
dc.titleNot so non-marine? Revisiting the Stoer Group and the Mesoproterozoic biosphereen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. Earth and Environmental Sciencesen
dc.contributor.institutionUniversity of St Andrews. St Andrews Centre for Exoplanet Scienceen
dc.contributor.institutionUniversity of St Andrews. School of Earth & Environmental Sciencesen
dc.description.statusPeer revieweden

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