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dc.contributor.authorCox, Grant
dc.contributor.authorHalverson, Galen
dc.contributor.authorPoirier, A.
dc.contributor.authorHeron, D.
dc.contributor.authorStrauss, J.
dc.contributor.authorStevenson, R.
dc.date.accessioned2017-01-30T15:31:10Z
dc.date.available2017-01-30T15:31:10Z
dc.date.created2016-04-28T19:30:18Z
dc.date.issued2016
dc.identifier.citationCox, G. and Halverson, G. and Poirier, A. and Heron, D. and Strauss, J. and Stevenson, R. 2016. A model for Cryogenian iron formation. Earth and Planetary Science Letters. 433: pp. 280-292.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/47094
dc.identifier.doi10.1016/j.epsl.2015.11.003
dc.description.abstract

The Neoproterozoic Tatonduk (Alaska) and Holowilena (South Australia) iron formations share many characteristics including their broadly coeval (Sturtian) ages, intimate association with glaciogenic sediments, and mineralogy. We show that these shared characteristics extend to their neodymium (εNdεNd) and iron isotope (δ56Fe) systematics. In both regions δ56Fe values display a distinct up-section trend to isotopically heavier values, while εNd values are primitive and similar to non-ferruginous mudstones within these successions. The δ56Fe profiles are consistent with oxidation of ferruginous waters during marine transgression, and the εNd values imply that much of this iron was sourced from the leaching of continental margin sediments largely derived from continental flood basalts. Rare earth element data indicate a secondary hydrothermal source for this iron.

dc.publisherElsevier BV
dc.titleA model for Cryogenian iron formation
dc.typeJournal Article
dcterms.source.volume433
dcterms.source.startPage280
dcterms.source.endPage292
dcterms.source.issn0012-821X
dcterms.source.titleEarth and Planetary Science Letters
curtin.departmentDepartment of Applied Geology
curtin.accessStatusFulltext not available


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