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dc.contributor.authorMitchell, Ross
dc.contributor.authorGernon, T.M.
dc.contributor.authorCox, Grant
dc.contributor.authorNordsvan, Adam
dc.contributor.authorKirscher, Uwe
dc.contributor.authorXuan, C.
dc.contributor.authorLiu, Yebo
dc.contributor.authorLiu, X.
dc.contributor.authorHe, X.
dc.date.accessioned2023-02-14T05:10:10Z
dc.date.available2023-02-14T05:10:10Z
dc.date.issued2021
dc.identifier.citationMitchell, R.N. and Gernon, T.M. and Cox, G.M. and Nordsvan, A.R. and Kirscher, U. and Xuan, C. and Liu, Y. et al. 2021. Orbital forcing of ice sheets during snowball Earth. Nature Communications. 12 (1): ARTN 4187.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/90462
dc.identifier.doi10.1038/s41467-021-24439-4
dc.description.abstract

The snowball Earth hypothesis—that a runaway ice-albedo feedback can cause global glaciation—seeks to explain low-latitude glacial deposits, as well as geological anomalies including the re-emergence of banded iron formation and “cap” carbonates. One of the most significant challenges to snowball Earth has been sedimentological cyclicity that has been taken to imply more climate dynamics than expected when the ocean is completely covered in ice. However, recent climate models suggest that as atmospheric CO2 accumulates, the snowball climate system becomes sensitive to orbital forcing. Here we show the presence of nearly all Milankovitch (orbital) cycles preserved in stratified banded iron formation deposited during the Sturtian snowball Earth. These results provide evidence for orbitally forced cyclicity of global ice sheets that resulted in periodic oxidation of ferrous iron. Orbital glacial advance and retreat cycles provide a simple mechanism to reconcile both the sedimentary dynamics and the enigmatic survival of multicellular life during snowball Earth.

dc.languageEnglish
dc.publisherNATURE PORTFOLIO
dc.relation.sponsoredbyhttp://purl.org/au-research/grants/arc/FL150100133
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectScience & Technology
dc.subjectMultidisciplinary Sciences
dc.subjectScience & Technology - Other Topics
dc.subjectNEOPROTEROZOIC IRON-FORMATION
dc.subjectGLACIATION
dc.subjectSEDIMENTARY
dc.subjectHISTORY
dc.subjectCYCLES
dc.subjectAGE
dc.titleOrbital forcing of ice sheets during snowball Earth
dc.typeJournal Article
dcterms.source.volume12
dcterms.source.number1
dcterms.source.issn2041-1723
dcterms.source.titleNature Communications
dc.date.updated2023-02-14T05:10:10Z
curtin.departmentSchool of Earth and Planetary Sciences (EPS)
curtin.accessStatusOpen access
curtin.facultyFaculty of Science and Engineering
curtin.contributor.orcidLiu, Yebo [0000-0002-5752-0854]
curtin.contributor.orcidKirscher, Uwe [0000-0003-4203-1430]
curtin.contributor.orcidMitchell, Ross [0000-0002-5349-7909]
curtin.identifier.article-numberARTN 4187
dcterms.source.eissn2041-1723
curtin.contributor.scopusauthoridKirscher, Uwe [54787850500]


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