The mantle source of basalts from Reunion Island is not more oxidized than the MORB source mantle
Glasses quenched from relatively undegassed ocean island magmas erupted from volcanoes at Iceland, Hawaii, the Canary Islands, and Erebus have elevated Fe³⁺/∑Fe ratios compared to glasses quenched from mid-ocean ridge basalts. This has been ascribed to elevated fO₂ of their mantle sources, plausibly...
Published in: | Contributions to Mineralogy and Petrology |
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ftcaltechauth:oai:authors.library.caltech.edu:112503 2023-05-15T16:47:44+02:00 The mantle source of basalts from Reunion Island is not more oxidized than the MORB source mantle Brounce, Maryjo Stolper, Edward Eiler, John 2022-01 application/pdf application/msword https://authors.library.caltech.edu/112503/ https://authors.library.caltech.edu/112503/1/2021_Article_.pdf https://authors.library.caltech.edu/112503/2/410_2021_1870_MOESM1_ESM.docx https://resolver.caltech.edu/CaltechAUTHORS:20211217-10741800 en eng Springer https://authors.library.caltech.edu/112503/1/2021_Article_.pdf https://authors.library.caltech.edu/112503/2/410_2021_1870_MOESM1_ESM.docx Brounce, Maryjo and Stolper, Edward and Eiler, John (2022) The mantle source of basalts from Reunion Island is not more oxidized than the MORB source mantle. Contributions to Mineralogy and Petrology, 177 (1). Art. No. 7. ISSN 0010-7999. doi:10.1007/s00410-021-01870-w. https://resolver.caltech.edu/CaltechAUTHORS:20211217-10741800 <https://resolver.caltech.edu/CaltechAUTHORS:20211217-10741800> cc_by CC-BY Article PeerReviewed 2022 ftcaltechauth https://doi.org/10.1007/s00410-021-01870-w 2022-07-28T17:54:47Z Glasses quenched from relatively undegassed ocean island magmas erupted from volcanoes at Iceland, Hawaii, the Canary Islands, and Erebus have elevated Fe³⁺/∑Fe ratios compared to glasses quenched from mid-ocean ridge basalts. This has been ascribed to elevated fO₂ of their mantle sources, plausibly due to subducted, oxidized near-surface-derived components in their mantle sources. The basaltic magmas from Reunion Island in the Indian ocean have Sr–Nd-Hf-Pb-Os isotopic compositions suggesting that their mantle sources contain little or no subducted near-surface materials and contain the C/FOZO/PREMA mantle component. To constrain the fO₂ of the C/FOZO/PREMA mantle component and test the link between oxidized OIB and recycled surface-derived materials in their sources, we measured major and volatile element abundances and Fe³⁺/∑Fe ratios of naturally glassy, olivine-hosted melt inclusions from Piton de La Fournaise volcano, La Reunion. We conclude that the fO₂ of the mantle source of these Reunion lavas is lower than of the mantle sources of primitive, undegassed magmas from Hawaii, Iceland, the Canary Islands, and Mt. Erebus, and indistinguishable from that of the Indian-ocean upper mantle. This finding is consistent with previous suggestions that the source of Reunion lavas (and the C/FOZO/PREMA mantle component) contains little or no recycled materials and with the suggestion that recycled oxidized materials contribute to the high fO₂ of some other OIBs, especially those from incompatible-element-enriched mantle sources. Simple mixing models between oxidized melts of EM1 and HIMU components and relatively reduced melts of DMM can explain the isotopic compositions and Fe³⁺/∑Fe ratios of lavas from Hawaii, Iceland, the Canary Islands, and Mount Erebus; this model can be tested by study of additional OIB magmas, including those rich in the EM2 component. Article in Journal/Newspaper Iceland Ocean Island Caltech Authors (California Institute of Technology) Indian Mount Erebus ENVELOPE(167.167,167.167,-77.533,-77.533) Piton ENVELOPE(141.596,141.596,-66.777,-66.777) Contributions to Mineralogy and Petrology 177 1 |
institution |
Open Polar |
collection |
Caltech Authors (California Institute of Technology) |
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ftcaltechauth |
language |
English |
description |
Glasses quenched from relatively undegassed ocean island magmas erupted from volcanoes at Iceland, Hawaii, the Canary Islands, and Erebus have elevated Fe³⁺/∑Fe ratios compared to glasses quenched from mid-ocean ridge basalts. This has been ascribed to elevated fO₂ of their mantle sources, plausibly due to subducted, oxidized near-surface-derived components in their mantle sources. The basaltic magmas from Reunion Island in the Indian ocean have Sr–Nd-Hf-Pb-Os isotopic compositions suggesting that their mantle sources contain little or no subducted near-surface materials and contain the C/FOZO/PREMA mantle component. To constrain the fO₂ of the C/FOZO/PREMA mantle component and test the link between oxidized OIB and recycled surface-derived materials in their sources, we measured major and volatile element abundances and Fe³⁺/∑Fe ratios of naturally glassy, olivine-hosted melt inclusions from Piton de La Fournaise volcano, La Reunion. We conclude that the fO₂ of the mantle source of these Reunion lavas is lower than of the mantle sources of primitive, undegassed magmas from Hawaii, Iceland, the Canary Islands, and Mt. Erebus, and indistinguishable from that of the Indian-ocean upper mantle. This finding is consistent with previous suggestions that the source of Reunion lavas (and the C/FOZO/PREMA mantle component) contains little or no recycled materials and with the suggestion that recycled oxidized materials contribute to the high fO₂ of some other OIBs, especially those from incompatible-element-enriched mantle sources. Simple mixing models between oxidized melts of EM1 and HIMU components and relatively reduced melts of DMM can explain the isotopic compositions and Fe³⁺/∑Fe ratios of lavas from Hawaii, Iceland, the Canary Islands, and Mount Erebus; this model can be tested by study of additional OIB magmas, including those rich in the EM2 component. |
format |
Article in Journal/Newspaper |
author |
Brounce, Maryjo Stolper, Edward Eiler, John |
spellingShingle |
Brounce, Maryjo Stolper, Edward Eiler, John The mantle source of basalts from Reunion Island is not more oxidized than the MORB source mantle |
author_facet |
Brounce, Maryjo Stolper, Edward Eiler, John |
author_sort |
Brounce, Maryjo |
title |
The mantle source of basalts from Reunion Island is not more oxidized than the MORB source mantle |
title_short |
The mantle source of basalts from Reunion Island is not more oxidized than the MORB source mantle |
title_full |
The mantle source of basalts from Reunion Island is not more oxidized than the MORB source mantle |
title_fullStr |
The mantle source of basalts from Reunion Island is not more oxidized than the MORB source mantle |
title_full_unstemmed |
The mantle source of basalts from Reunion Island is not more oxidized than the MORB source mantle |
title_sort |
mantle source of basalts from reunion island is not more oxidized than the morb source mantle |
publisher |
Springer |
publishDate |
2022 |
url |
https://authors.library.caltech.edu/112503/ https://authors.library.caltech.edu/112503/1/2021_Article_.pdf https://authors.library.caltech.edu/112503/2/410_2021_1870_MOESM1_ESM.docx https://resolver.caltech.edu/CaltechAUTHORS:20211217-10741800 |
long_lat |
ENVELOPE(167.167,167.167,-77.533,-77.533) ENVELOPE(141.596,141.596,-66.777,-66.777) |
geographic |
Indian Mount Erebus Piton |
geographic_facet |
Indian Mount Erebus Piton |
genre |
Iceland Ocean Island |
genre_facet |
Iceland Ocean Island |
op_relation |
https://authors.library.caltech.edu/112503/1/2021_Article_.pdf https://authors.library.caltech.edu/112503/2/410_2021_1870_MOESM1_ESM.docx Brounce, Maryjo and Stolper, Edward and Eiler, John (2022) The mantle source of basalts from Reunion Island is not more oxidized than the MORB source mantle. Contributions to Mineralogy and Petrology, 177 (1). Art. No. 7. ISSN 0010-7999. doi:10.1007/s00410-021-01870-w. https://resolver.caltech.edu/CaltechAUTHORS:20211217-10741800 <https://resolver.caltech.edu/CaltechAUTHORS:20211217-10741800> |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1007/s00410-021-01870-w |
container_title |
Contributions to Mineralogy and Petrology |
container_volume |
177 |
container_issue |
1 |
_version_ |
1766037820350136320 |