Evidence for the oxidation of Earth's crust from the evolution of manganese minerals
dc.contributor.author | Hummer, D.R. | |
dc.contributor.author | Golden, J.J. | |
dc.contributor.author | Hystad, G. | |
dc.contributor.author | Downs, R.T. | |
dc.contributor.author | Eleish, A. | |
dc.contributor.author | Liu, C. | |
dc.contributor.author | Ralph, J. | |
dc.contributor.author | Morrison, S.M. | |
dc.contributor.author | Meyer, M.B. | |
dc.contributor.author | Hazen, R.M. | |
dc.date.accessioned | 2022-03-18T00:04:04Z | |
dc.date.available | 2022-03-18T00:04:04Z | |
dc.date.issued | 2022 | |
dc.identifier.citation | Hummer, 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.issn | 2041-1723 | |
dc.identifier.pmid | 35181670 | |
dc.identifier.doi | 10.1038/s41467-022-28589-x | |
dc.identifier.uri | http://hdl.handle.net/10150/663671 | |
dc.description.abstract | Analysis 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.iso | en | |
dc.publisher | Nature Research | |
dc.rights | Copyright © The Author(s) 2022. This article is licensed under a Creative Commons Attribution 4.0 International License. | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.title | Evidence for the oxidation of Earth's crust from the evolution of manganese minerals | |
dc.type | Article | |
dc.type | text | |
dc.contributor.department | Department of Geosciences, University of Arizona | |
dc.identifier.journal | Nature communications | |
dc.description.note | Open access journal | |
dc.description.collectioninformation | This 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.version | Final published version | |
dc.source.journaltitle | Nature communications | |
refterms.dateFOA | 2022-03-18T00:04:04Z |