Hydrothermal ferromanganese oxides around a petit-spot volcano on old and cold oceanic crust
Abstract Areas of old and cold oceanic plate lack conventional volcanism and have been assumed to be devoid of submarine hydrothermal activity. However, petit-spot volcanoes are common in areas of flexure of such oceanic plates. Here, we report hydrothermal ferromanganese oxides dredged from the vic...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2023-06-01
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| Series: | Communications Earth & Environment |
| Online Access: | https://doi.org/10.1038/s43247-023-00832-3 |
| _version_ | 1797811301878071296 |
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| author | Keishiro Azami Shiki Machida Naoto Hirano Kentaro Nakamura Kazutaka Yasukawa Tetsu Kogiso Masao Nakanishi Yasuhiro Kato |
| author_facet | Keishiro Azami Shiki Machida Naoto Hirano Kentaro Nakamura Kazutaka Yasukawa Tetsu Kogiso Masao Nakanishi Yasuhiro Kato |
| author_sort | Keishiro Azami |
| collection | DOAJ |
| description | Abstract Areas of old and cold oceanic plate lack conventional volcanism and have been assumed to be devoid of submarine hydrothermal activity. However, petit-spot volcanoes are common in areas of flexure of such oceanic plates. Here, we report hydrothermal ferromanganese oxides dredged from the vicinity of a petit-spot volcano at 5.7 km water depth in an area of oceanic plate flexure east of the Japan Trench. The bulk chemical, lead isotopic and mineralogical compositions of the samples indicate their formation by low-temperature hydrothermal activity, which can be interpreted as being caused by fluid–rock interactions at <200 °C. We propose that interaction of local marine sediments with volatile-rich petit-spot magmas may produce hydrothermal fluids containing not only iron and manganese but also enough amounts of carbon dioxide and methane to have implications for the global carbon cycle. However, contemporary hydrothermal activities at petit-spot volcanoes have not been confirmed yet. |
| first_indexed | 2024-03-13T07:21:39Z |
| format | Article |
| id | doaj.art-dc5eee59dd6245e1b649c2b43ca25eb3 |
| institution | Directory Open Access Journal |
| issn | 2662-4435 |
| language | English |
| last_indexed | 2024-03-13T07:21:39Z |
| publishDate | 2023-06-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Earth & Environment |
| spelling | doaj.art-dc5eee59dd6245e1b649c2b43ca25eb32023-06-04T11:39:24ZengNature PortfolioCommunications Earth & Environment2662-44352023-06-014111110.1038/s43247-023-00832-3Hydrothermal ferromanganese oxides around a petit-spot volcano on old and cold oceanic crustKeishiro Azami0Shiki Machida1Naoto Hirano2Kentaro Nakamura3Kazutaka Yasukawa4Tetsu Kogiso5Masao Nakanishi6Yasuhiro Kato7Department of Systems Innovation, School of Engineering, The University of TokyoOcean Resources Research Center for Next Generation, Chiba Institution of TechnologyCenter for Northeast Asian Studies, Tohoku UniversityDepartment of Systems Innovation, School of Engineering, The University of TokyoDepartment of Systems Innovation, School of Engineering, The University of TokyoGraduate School of Human and Environmental Studies, Kyoto University, Yoshida-nihonmatsu, SakyoGraduate School of Science, Chiba UniversityDepartment of Systems Innovation, School of Engineering, The University of TokyoAbstract Areas of old and cold oceanic plate lack conventional volcanism and have been assumed to be devoid of submarine hydrothermal activity. However, petit-spot volcanoes are common in areas of flexure of such oceanic plates. Here, we report hydrothermal ferromanganese oxides dredged from the vicinity of a petit-spot volcano at 5.7 km water depth in an area of oceanic plate flexure east of the Japan Trench. The bulk chemical, lead isotopic and mineralogical compositions of the samples indicate their formation by low-temperature hydrothermal activity, which can be interpreted as being caused by fluid–rock interactions at <200 °C. We propose that interaction of local marine sediments with volatile-rich petit-spot magmas may produce hydrothermal fluids containing not only iron and manganese but also enough amounts of carbon dioxide and methane to have implications for the global carbon cycle. However, contemporary hydrothermal activities at petit-spot volcanoes have not been confirmed yet.https://doi.org/10.1038/s43247-023-00832-3 |
| spellingShingle | Keishiro Azami Shiki Machida Naoto Hirano Kentaro Nakamura Kazutaka Yasukawa Tetsu Kogiso Masao Nakanishi Yasuhiro Kato Hydrothermal ferromanganese oxides around a petit-spot volcano on old and cold oceanic crust Communications Earth & Environment |
| title | Hydrothermal ferromanganese oxides around a petit-spot volcano on old and cold oceanic crust |
| title_full | Hydrothermal ferromanganese oxides around a petit-spot volcano on old and cold oceanic crust |
| title_fullStr | Hydrothermal ferromanganese oxides around a petit-spot volcano on old and cold oceanic crust |
| title_full_unstemmed | Hydrothermal ferromanganese oxides around a petit-spot volcano on old and cold oceanic crust |
| title_short | Hydrothermal ferromanganese oxides around a petit-spot volcano on old and cold oceanic crust |
| title_sort | hydrothermal ferromanganese oxides around a petit spot volcano on old and cold oceanic crust |
| url | https://doi.org/10.1038/s43247-023-00832-3 |
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