Show simple item record

dc.contributor.authorHummer, D.R.
dc.contributor.authorGolden, J.J.
dc.contributor.authorHystad, G.
dc.contributor.authorDowns, R.T.
dc.contributor.authorEleish, A.
dc.contributor.authorLiu, C.
dc.contributor.authorRalph, J.
dc.contributor.authorMorrison, S.M.
dc.contributor.authorMeyer, M.B.
dc.contributor.authorHazen, R.M.
dc.date.accessioned2022-03-18T00:04:04Z
dc.date.available2022-03-18T00:04:04Z
dc.date.issued2022
dc.identifier.citationHummer, D. R., Golden, J. J., Hystad, G., Downs, R. T., Eleish, A., Liu, C., Ralph, J., Morrison, S. M., Meyer, M. B., & Hazen, R. M. (2022). Evidence for the oxidation of Earth’s crust from the evolution of manganese minerals. Nature Communications.
dc.identifier.issn2041-1723
dc.identifier.pmid35181670
dc.identifier.doi10.1038/s41467-022-28589-x
dc.identifier.urihttp://hdl.handle.net/10150/663671
dc.description.abstractAnalysis of manganese mineral occurrences and valence states demonstrate oxidation of Earth's crust through time. Changes in crustal redox state are critical to Earth's evolution, but few methods exist for evaluating spatially averaged crustal redox state through time. Manganese (Mn) is a redox-sensitive metal whose variable oxidation states and abundance in crustal minerals make it a useful tracer of crustal oxidation. We find that the average oxidation state of crustal Mn occurrences has risen in the last 1 billion years in response to atmospheric oxygenation following a 66 ± 1 million-year time lag. We interpret this lag as the average time necessary to equilibrate the shallow crust to atmospheric oxygen fugacity. This study employs large mineralogical databases to evaluate geochemical conditions through Earth's history, and we propose that this and other mineral data sets form an important class of proxies that constrain the evolving redox state of various Earth reservoirs. © 2022. The Author(s).
dc.language.isoen
dc.publisherNature Research
dc.rightsCopyright © The Author(s) 2022. This article is licensed under a Creative Commons Attribution 4.0 International License.
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleEvidence for the oxidation of Earth's crust from the evolution of manganese minerals
dc.typeArticle
dc.typetext
dc.contributor.departmentDepartment of Geosciences, University of Arizona
dc.identifier.journalNature communications
dc.description.noteOpen access journal
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
dc.eprint.versionFinal published version
dc.source.journaltitleNature communications
refterms.dateFOA2022-03-18T00:04:04Z


Files in this item

Thumbnail
Name:
s41467-022-28589-x.pdf
Size:
1.018Mb
Format:
PDF
Description:
Final Published Version

This item appears in the following Collection(s)

Show simple item record

Copyright © The Author(s) 2022. This article is licensed under a Creative Commons Attribution 4.0 International License.
Except where otherwise noted, this item's license is described as Copyright © The Author(s) 2022. This article is licensed under a Creative Commons Attribution 4.0 International License.