Methane genesis within olivine-hosted fluid inclusions in dolomitic marble of the Hida Belt, Japan
Abstract Abiotic synthesis of hydrocarbon-bearing fluids during geological processes has a significant impact on the evolution of both the Earth's biosphere and the solid Earth. Aqueous alteration of ultramafic rocks, i.e., serpentinization, which forms serpentinite, is one of the geological pr...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-02-01
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| Series: | Progress in Earth and Planetary Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s40645-024-00609-y |
| _version_ | 1797272816695902208 |
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| author | Hironobu Harada Tatsuki Tsujimori |
| author_facet | Hironobu Harada Tatsuki Tsujimori |
| author_sort | Hironobu Harada |
| collection | DOAJ |
| description | Abstract Abiotic synthesis of hydrocarbon-bearing fluids during geological processes has a significant impact on the evolution of both the Earth's biosphere and the solid Earth. Aqueous alteration of ultramafic rocks, i.e., serpentinization, which forms serpentinite, is one of the geological processes generating abiotic methane (CH4). However, abiotic CH4 generation is not limited to the serpentinization of mafic and ultramafic lithologies. Metasedimentary dolomitic marble from the Hida Belt, Japan, is characterized by the presence of forsterite-rich olivine (Fo~89–93), and olivine crystals contain abundant fluid inclusions (<1 to 10 μm in size). Raman spectroscopic analyses of olivine-hosted fluid inclusions found that both primary and secondary fluid inclusions contain CH4, lizardite/chrysotile, and brucite. This indicates that micro-scale interactions between COH fluid and host olivine produced CH4 through the reduction of CO2 by H2 released during local serpentinization within inclusions. Our observation implies that the dolomitic marble has the potential to be a key lithology for the synthesis and storage of abiotic CH4 in a shallower crustal portion of orogenic belts. |
| first_indexed | 2024-03-07T14:35:05Z |
| format | Article |
| id | doaj.art-4cc357866fa24c42bacbd39f09f3895d |
| institution | Directory Open Access Journal |
| issn | 2197-4284 |
| language | English |
| last_indexed | 2024-03-07T14:35:05Z |
| publishDate | 2024-02-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Progress in Earth and Planetary Science |
| spelling | doaj.art-4cc357866fa24c42bacbd39f09f3895d2024-03-05T20:42:28ZengSpringerOpenProgress in Earth and Planetary Science2197-42842024-02-0111111310.1186/s40645-024-00609-yMethane genesis within olivine-hosted fluid inclusions in dolomitic marble of the Hida Belt, JapanHironobu Harada0Tatsuki Tsujimori1Department of Earth Science, Graduate School of Science, Tohoku UniversityDepartment of Earth Science, Graduate School of Science, Tohoku UniversityAbstract Abiotic synthesis of hydrocarbon-bearing fluids during geological processes has a significant impact on the evolution of both the Earth's biosphere and the solid Earth. Aqueous alteration of ultramafic rocks, i.e., serpentinization, which forms serpentinite, is one of the geological processes generating abiotic methane (CH4). However, abiotic CH4 generation is not limited to the serpentinization of mafic and ultramafic lithologies. Metasedimentary dolomitic marble from the Hida Belt, Japan, is characterized by the presence of forsterite-rich olivine (Fo~89–93), and olivine crystals contain abundant fluid inclusions (<1 to 10 μm in size). Raman spectroscopic analyses of olivine-hosted fluid inclusions found that both primary and secondary fluid inclusions contain CH4, lizardite/chrysotile, and brucite. This indicates that micro-scale interactions between COH fluid and host olivine produced CH4 through the reduction of CO2 by H2 released during local serpentinization within inclusions. Our observation implies that the dolomitic marble has the potential to be a key lithology for the synthesis and storage of abiotic CH4 in a shallower crustal portion of orogenic belts.https://doi.org/10.1186/s40645-024-00609-yDolomitic marbleFluid inclusionOlivineAbiotic methane synthesisHida Belt |
| spellingShingle | Hironobu Harada Tatsuki Tsujimori Methane genesis within olivine-hosted fluid inclusions in dolomitic marble of the Hida Belt, Japan Progress in Earth and Planetary Science Dolomitic marble Fluid inclusion Olivine Abiotic methane synthesis Hida Belt |
| title | Methane genesis within olivine-hosted fluid inclusions in dolomitic marble of the Hida Belt, Japan |
| title_full | Methane genesis within olivine-hosted fluid inclusions in dolomitic marble of the Hida Belt, Japan |
| title_fullStr | Methane genesis within olivine-hosted fluid inclusions in dolomitic marble of the Hida Belt, Japan |
| title_full_unstemmed | Methane genesis within olivine-hosted fluid inclusions in dolomitic marble of the Hida Belt, Japan |
| title_short | Methane genesis within olivine-hosted fluid inclusions in dolomitic marble of the Hida Belt, Japan |
| title_sort | methane genesis within olivine hosted fluid inclusions in dolomitic marble of the hida belt japan |
| topic | Dolomitic marble Fluid inclusion Olivine Abiotic methane synthesis Hida Belt |
| url | https://doi.org/10.1186/s40645-024-00609-y |
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