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Article: Orbital forcing of ice sheets during snowball Earth

TitleOrbital forcing of ice sheets during snowball Earth
Authors
Issue Date2021
PublisherNature Research: Fully open access journals. The Journal's web site is located at http://www.nature.com/ncomms/index.html
Citation
Nature Communications, 2021, v. 12, article no. 4187 How to Cite?
AbstractThe 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.
Persistent Identifierhttp://hdl.handle.net/10722/308376
ISSN
2023 Impact Factor: 14.7
2023 SCImago Journal Rankings: 4.887
PubMed Central ID
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorMitchell, RN-
dc.contributor.authorGernon, TM-
dc.contributor.authorCox, GM-
dc.contributor.authorNordsvan, AR-
dc.contributor.authorKirscher, U-
dc.contributor.authorXuan, C-
dc.contributor.authorLiu, Y-
dc.contributor.authorLiu, X-
dc.contributor.authorHe, X-
dc.date.accessioned2021-12-01T07:52:31Z-
dc.date.available2021-12-01T07:52:31Z-
dc.date.issued2021-
dc.identifier.citationNature Communications, 2021, v. 12, article no. 4187-
dc.identifier.issn2041-1723-
dc.identifier.urihttp://hdl.handle.net/10722/308376-
dc.description.abstractThe 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.languageeng-
dc.publisherNature Research: Fully open access journals. The Journal's web site is located at http://www.nature.com/ncomms/index.html-
dc.relation.ispartofNature Communications-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleOrbital forcing of ice sheets during snowball Earth-
dc.typeArticle-
dc.identifier.emailNordsvan, AR: nordsvan@hku.hk-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1038/s41467-021-24439-4-
dc.identifier.pmid34234152-
dc.identifier.pmcidPMC8263735-
dc.identifier.scopuseid_2-s2.0-85109728808-
dc.identifier.hkuros330528-
dc.identifier.volume12-
dc.identifier.spagearticle no. 4187-
dc.identifier.epagearticle no. 4187-
dc.identifier.isiWOS:000687325900007-
dc.publisher.placeUnited Kingdom-

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