Deep mantle earthquakes linked to CO2 degassing at the Mid-Atlantic Ridge
Abstract Volatiles (CO2, H2O) play a fundamental role in mantle melting beneath ocean spreading centers, but what role they play during the melt migration remains unknown. Using seismological data recorded by ocean-bottom seismometers, here we report the presence of deep earthquakes at 10–20 km dept...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-55792-9 |
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| author | Zhiteng Yu Satish C. Singh Cédric Hamelin Léa Grenet Marcia Maia Anne Briais Lorenzo Petracchini Daniele Brunelli |
| author_facet | Zhiteng Yu Satish C. Singh Cédric Hamelin Léa Grenet Marcia Maia Anne Briais Lorenzo Petracchini Daniele Brunelli |
| author_sort | Zhiteng Yu |
| collection | DOAJ |
| description | Abstract Volatiles (CO2, H2O) play a fundamental role in mantle melting beneath ocean spreading centers, but what role they play during the melt migration remains unknown. Using seismological data recorded by ocean-bottom seismometers, here we report the presence of deep earthquakes at 10–20 km depth in the mantle along the Mid-Atlantic Ridge axis, much below the brittle-ductile boundary. Syntheses of regional basaltic rock samples and their geochemical analyses indicate the presence of an abnormally high quantity of CO2 (~0.4–3.0 wt%) in the primary melts. As the degassing of a high concentration of dissolved CO2 produces volume change, we suggest that deep earthquakes in the mantle result from the degassing of CO2. The large concentration of CO2 in the primitive melt will influence the presence of melt beneath the lithosphere-asthenosphere boundary at sub-solidus temperatures. |
| format | Article |
| id | doaj-art-f55cd3178edc45dba240d7d7ee50cef7 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-f55cd3178edc45dba240d7d7ee50cef72025-02-02T12:32:23ZengNature PortfolioNature Communications2041-17232025-01-0116111110.1038/s41467-024-55792-9Deep mantle earthquakes linked to CO2 degassing at the Mid-Atlantic RidgeZhiteng Yu0Satish C. Singh1Cédric Hamelin2Léa Grenet3Marcia Maia4Anne Briais5Lorenzo Petracchini6Daniele Brunelli7Key Laboratory of Submarine Geosciences, Second Institute of Oceanography, Ministry of Natural ResourcesUniversité Paris Cité, Institut de Physique du Globe de Paris, CNRSIndependant scholar, 7 Sondre SkogveienGeo-Ocean UMR6538, CNRS-Ifremer-UBO-UBSGeo-Ocean UMR6538, CNRS-Ifremer-UBO-UBSGeo-Ocean UMR6538, CNRS-Ifremer-UBO-UBSCnr-Istituto di Geologia Ambientale e GeoingegneriaCnr-Istituto di Geologia Ambientale e GeoingegneriaAbstract Volatiles (CO2, H2O) play a fundamental role in mantle melting beneath ocean spreading centers, but what role they play during the melt migration remains unknown. Using seismological data recorded by ocean-bottom seismometers, here we report the presence of deep earthquakes at 10–20 km depth in the mantle along the Mid-Atlantic Ridge axis, much below the brittle-ductile boundary. Syntheses of regional basaltic rock samples and their geochemical analyses indicate the presence of an abnormally high quantity of CO2 (~0.4–3.0 wt%) in the primary melts. As the degassing of a high concentration of dissolved CO2 produces volume change, we suggest that deep earthquakes in the mantle result from the degassing of CO2. The large concentration of CO2 in the primitive melt will influence the presence of melt beneath the lithosphere-asthenosphere boundary at sub-solidus temperatures.https://doi.org/10.1038/s41467-024-55792-9 |
| spellingShingle | Zhiteng Yu Satish C. Singh Cédric Hamelin Léa Grenet Marcia Maia Anne Briais Lorenzo Petracchini Daniele Brunelli Deep mantle earthquakes linked to CO2 degassing at the Mid-Atlantic Ridge Nature Communications |
| title | Deep mantle earthquakes linked to CO2 degassing at the Mid-Atlantic Ridge |
| title_full | Deep mantle earthquakes linked to CO2 degassing at the Mid-Atlantic Ridge |
| title_fullStr | Deep mantle earthquakes linked to CO2 degassing at the Mid-Atlantic Ridge |
| title_full_unstemmed | Deep mantle earthquakes linked to CO2 degassing at the Mid-Atlantic Ridge |
| title_short | Deep mantle earthquakes linked to CO2 degassing at the Mid-Atlantic Ridge |
| title_sort | deep mantle earthquakes linked to co2 degassing at the mid atlantic ridge |
| url | https://doi.org/10.1038/s41467-024-55792-9 |
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