The mantle source of basalts from Reunion Island is not more oxidized than the MORB source mantle
Abstract Glasses quenched from relatively undegassed ocean island magmas erupted from volcanoes at Iceland, Hawaii, the Canary Islands, and Erebus have elevated Fe 3+ /∑Fe ratios compared to glasses quenched from mid-ocean ridge basalts. This has been ascribed to elevated f O 2 of their mantle sourc...
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crspringernat:10.1007/s00410-021-01870-w 2023-05-15T16:47:46+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 2021 http://dx.doi.org/10.1007/s00410-021-01870-w https://link.springer.com/content/pdf/10.1007/s00410-021-01870-w.pdf https://link.springer.com/article/10.1007/s00410-021-01870-w/fulltext.html en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Contributions to Mineralogy and Petrology volume 177, issue 1 ISSN 0010-7999 1432-0967 Geochemistry and Petrology Geophysics journal-article 2021 crspringernat https://doi.org/10.1007/s00410-021-01870-w 2022-01-04T07:34:15Z Abstract Glasses quenched from relatively undegassed ocean island magmas erupted from volcanoes at Iceland, Hawaii, the Canary Islands, and Erebus have elevated Fe 3+ /∑Fe ratios compared to glasses quenched from mid-ocean ridge basalts. This has been ascribed to elevated f O 2 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 f O 2 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 Fe 3+ /∑Fe ratios of naturally glassy, olivine-hosted melt inclusions from Piton de La Fournaise volcano, La Reunion. We conclude that the f O 2 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 f O 2 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 Fe 3+ /∑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 Springer Nature (via Crossref) 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 |
Springer Nature (via Crossref) |
op_collection_id |
crspringernat |
language |
English |
topic |
Geochemistry and Petrology Geophysics |
spellingShingle |
Geochemistry and Petrology Geophysics Brounce, Maryjo Stolper, Edward Eiler, John The mantle source of basalts from Reunion Island is not more oxidized than the MORB source mantle |
topic_facet |
Geochemistry and Petrology Geophysics |
description |
Abstract Glasses quenched from relatively undegassed ocean island magmas erupted from volcanoes at Iceland, Hawaii, the Canary Islands, and Erebus have elevated Fe 3+ /∑Fe ratios compared to glasses quenched from mid-ocean ridge basalts. This has been ascribed to elevated f O 2 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 f O 2 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 Fe 3+ /∑Fe ratios of naturally glassy, olivine-hosted melt inclusions from Piton de La Fournaise volcano, La Reunion. We conclude that the f O 2 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 f O 2 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 Fe 3+ /∑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 |
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 Science and Business Media LLC |
publishDate |
2021 |
url |
http://dx.doi.org/10.1007/s00410-021-01870-w https://link.springer.com/content/pdf/10.1007/s00410-021-01870-w.pdf https://link.springer.com/article/10.1007/s00410-021-01870-w/fulltext.html |
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_source |
Contributions to Mineralogy and Petrology volume 177, issue 1 ISSN 0010-7999 1432-0967 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1007/s00410-021-01870-w |
container_title |
Contributions to Mineralogy and Petrology |
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177 |
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1 |
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1766037882842120192 |