{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1360013168829313664.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/2020gc009533"}},{"identifier":{"@type":"URI","@value":"https://onlinelibrary.wiley.com/doi/pdf/10.1029/2020GC009533"}},{"identifier":{"@type":"URI","@value":"https://onlinelibrary.wiley.com/doi/full-xml/10.1029/2020GC009533"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2020GC009533"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Abiotic Methane Generation via CO<sub>2</sub> Hydrogenation With Natural Chromitite Under Hydrothermal Conditions"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>Abstract</jats:title><jats:p>In modern continental serpentinization systems and ultramafic rock‐hosted sub‐seafloor hydrothermal systems, it is believed that chromitite plays an important role in abiotic hydrocarbon generation. Previous experiments have suggested that chromite acts as a catalyst of CH<jats:sub>4</jats:sub> generation, but the composition of chromite used in the previous experiment is unrealistic on Earth. On the other hand, other studies have suggested that natural chromite including Mg and Al cannot function as a catalyst for CH<jats:sub>4</jats:sub> generation. Consequently, it still remains uncertain whether naturally occurring Cr‐rich minerals promote CH<jats:sub>4</jats:sub> generation. We monitored the reaction between naturally occurring chromitite and CO<jats:sub>2</jats:sub>‐rich fluid at 300°C, 500 bars. We performed two experiments in different initial CO<jats:sub>2</jats:sub>/H<jats:sub>2</jats:sub> ratios. In both experiments, CH<jats:sub>4</jats:sub> was generated immediately after the beginning of experiments. When CO<jats:sub>2</jats:sub> was more abundant than H<jats:sub>2</jats:sub>, the CH<jats:sub>4</jats:sub> concentration in the fluid decreased below the detection limit value. On the other hand, when H<jats:sub>2</jats:sub> was more abundant than CO<jats:sub>2</jats:sub>, the CH<jats:sub>4</jats:sub> concentration in the fluid was maintained above 0.01 mmol/kg. This is the first report to demonstrate that naturally occurring Cr‐rich minerals act as a promotor of CH<jats:sub>4</jats:sub> generation. Cr‐rich minerals such as Cr spinel are common accessory mineral in ultramafic rock. Therefore, on the early Earth, a certain level (on the order of 0.01 mmol/kg) of CH<jats:sub>4</jats:sub> was likely produced through reactions between ultramafic rock and CO<jats:sub>2</jats:sub>‐bearing fluid. To produce more abundant CH<jats:sub>4</jats:sub>, more favorable conditions featuring greater quantities of Cr spinel and much higher H<jats:sub>2</jats:sub> concentration (H<jats:sub>2</jats:sub>/CO<jats:sub>2</jats:sub> ratio) must be necessary.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380013168829313793","@type":"Researcher","foaf:name":[{"@value":"Hisahiro Ueda"}],"jpcoar:affiliationName":[{"@value":"Super‐cutting‐edge Grand and Advanced Research (SUGAR) Program Institute for Extra‐cutting‐edge Science and Technology Avant‐garde Research (X‐star) Japan Agency for Marine‐earth Science and Technology (JAMSTEC)  Yokosuka‐city Kanagawa Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380013168829313792","@type":"Researcher","foaf:name":[{"@value":"Yohei Matsui"}],"jpcoar:affiliationName":[{"@value":"Advanced Science‐Technology Research (ASTER) Program Institute for Extra‐cutting‐edge Science and Technology Avant‐garde Research (X‐star) Japan Agency for Marine‐earth Science and Technology (JAMSTEC)  Yokosuka‐city Kanagawa Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1420001326227572992","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"00635063"},{"@type":"NRID","@value":"1000000635063"},{"@type":"ORCID","@value":"0000-0003-3761-8915"},{"@type":"NRID","@value":"9000283905127"},{"@type":"NRID","@value":"9000350560443"},{"@type":"NRID","@value":"9000006340350"},{"@type":"NRID","@value":"9000347083781"},{"@type":"NRID","@value":"9000386337351"},{"@type":"NRID","@value":"9000386338371"},{"@type":"NRID","@value":"9000369737997"},{"@type":"NRID","@value":"9000411217387"},{"@type":"NRID","@value":"9000347167013"},{"@type":"NRID","@value":"9000409997921"},{"@type":"NRID","@value":"9000411217612"},{"@type":"NRID","@value":"9000283155298"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/70000-17610"}],"foaf:name":[{"@value":"Yusuke Sawaki"}],"jpcoar:affiliationName":[{"@value":"Department of Earth Science and Astronomy University of Tokyo  Tokyo Japan"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"15252027"},{"@type":"EISSN","@value":"15252027"}],"prism:publicationName":[{"@value":"Geochemistry, Geophysics, Geosystems"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"2021-04","prism:volume":"22","prism:number":"4"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://onlinelibrary.wiley.com/doi/pdf/10.1029/2020GC009533"},{"@id":"https://onlinelibrary.wiley.com/doi/full-xml/10.1029/2020GC009533"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2020GC009533"}],"createdAt":"2021-03-16","modifiedAt":"2023-08-29","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=QE1-996.5","dc:title":"QE1-996.5"},{"@id":"https://cir.nii.ac.jp/all?q=hydrothermal%20system","dc:title":"hydrothermal system"},{"@id":"https://cir.nii.ac.jp/all?q=QC801-809","dc:title":"QC801-809"},{"@id":"https://cir.nii.ac.jp/all?q=methane%20generation","dc:title":"methane generation"},{"@id":"https://cir.nii.ac.jp/all?q=Geophysics.%20Cosmic%20physics","dc:title":"Geophysics. Cosmic physics"},{"@id":"https://cir.nii.ac.jp/all?q=Geology","dc:title":"Geology"},{"@id":"https://cir.nii.ac.jp/all?q=experiments","dc:title":"experiments"},{"@id":"https://cir.nii.ac.jp/all?q=Fischer%E2%80%90Tropsch%20type%20(FTT)%20synthesis","dc:title":"Fischer‐Tropsch type (FTT) synthesis"},{"@id":"https://cir.nii.ac.jp/all?q=Chromitite","dc:title":"Chromitite"}],"project":[{"@id":"https://cir.nii.ac.jp/crid/1040003825718620544","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"20H01991"},{"@type":"JGN","@value":"JP20H01991"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20H01991/"}],"notation":[{"@language":"ja","@value":"砕屑性ジルコン用母岩推定図の作成"},{"@language":"en","@value":"Discrimination diagram for detrital zircons"}]}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360002215942335744","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Reactions between olivine and CO2-rich seawater at 300 °C: Implications for H2 generation and CO2 sequestration on the early Earth"}]},{"@id":"https://cir.nii.ac.jp/crid/1360005518355905280","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"A hydrogen-dependent geochemical analogue of primordial carbon and energy metabolism"}]},{"@id":"https://cir.nii.ac.jp/crid/1360011143909991168","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Abiogenic methanogenesis during experimental komatiite serpentinization: Implications for the evolution of the early Precambrian atmosphere"}]},{"@id":"https://cir.nii.ac.jp/crid/1360011145775595264","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Formation of H2 and CH4by weathering of olivine at temperatures between 30 and 70°C"}]},{"@id":"https://cir.nii.ac.jp/crid/1360013171974946688","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Low temperature iron- and nickel-catalyzed reactions leading to coalbed gas formation"}]},{"@id":"https://cir.nii.ac.jp/crid/1360292619360888192","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Geochemistry of high H2 and CH4 vent fluids issuing from ultramafic rocks at the Rainbow hydrothermal field (36°14′N, MAR)"}]},{"@id":"https://cir.nii.ac.jp/crid/1360292621294725760","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Abiotic methane flux from the Chimaera seep and Tekirova ophiolites (Turkey): Understanding gas exhalation from low temperature serpentinization and implications for Mars"}]},{"@id":"https://cir.nii.ac.jp/crid/1360294646071033600","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Hydrothermal Synthesis of Ruthenium Nanoparticles with a Metallic Core and a Ruthenium Carbide Shell for Low-Temperature Activation of CO<sub>2</sub> to Methane"}]},{"@id":"https://cir.nii.ac.jp/crid/1360294648084275584","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"The solubility of carbon dioxide in nacl solutions at high temperatures and pressures"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567182088755456","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Origin of methane in serpentinite-hosted hydrothermal systems: The CH4–H2–H2O hydrogen isotope systematics of the Hakuba Happo hot spring"}]},{"@id":"https://cir.nii.ac.jp/crid/1360574092883350784","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"SUPCRT92: A software package for calculating the standard molal thermodynamic properties of minerals, gases, aqueous species, and reactions from 1 to 5000 bar and 0 to 1000°C"}]},{"@id":"https://cir.nii.ac.jp/crid/1360574094193989888","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Laboratory Simulations of Abiotic Hydrocarbon Formation in Earth's Deep Subsurface"}]},{"@id":"https://cir.nii.ac.jp/crid/1360576122507243008","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Radiocarbon determination of atmospheric methane at Baring Head, New Zealand"}]},{"@id":"https://cir.nii.ac.jp/crid/1360588380141643904","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Y-Ho fractionation during basalt alteration in hydrothermal system: An implication for superchondritic Y/Ho signature recorded in Precambrian banded iron formations"}]},{"@id":"https://cir.nii.ac.jp/crid/1360855569077451008","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Abiogenic Methane Formation and Isotopic Fractionation Under Hydrothermal Conditions"}]},{"@id":"https://cir.nii.ac.jp/crid/1360855570588161408","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Chemical characteristics of chromian spinel in plutonic rocks: Implications for deep magma processes and discrimination of tectonic setting"}]},{"@id":"https://cir.nii.ac.jp/crid/1360855570874325248","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Carbonate control of H<sub>2</sub> and CH<sub>4</sub> production in serpentinization systems at elevated P‐Ts"}]},{"@id":"https://cir.nii.ac.jp/crid/1361137044158073088","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"The Drive to Life on Wet and Icy Worlds"}]},{"@id":"https://cir.nii.ac.jp/crid/1361137044271934976","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Hydrocarbons in Hydrothermal Vent Fluids: The Role of Chromium-Bearing Catalysts"}]},{"@id":"https://cir.nii.ac.jp/crid/1361418518402883968","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Geochemistry and geobiology of a present-day serpentinization site in California: The Cedars"}]},{"@id":"https://cir.nii.ac.jp/crid/1361418518613251968","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"How I Have Been Led to the Direct Hydrogenation Method by Metallic Catalysts<sup>1</sup>"}]},{"@id":"https://cir.nii.ac.jp/crid/1361418519482085888","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Earth's Earliest Atmospheres"}]},{"@id":"https://cir.nii.ac.jp/crid/1361418520589839488","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Distinguishing ultramafic‐from basalt‐hosted submarine hydrothermal systems by comparing calculated vent fluid compositions"}]},{"@id":"https://cir.nii.ac.jp/crid/1361418521124425344","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Earth's Early Atmosphere"}]},{"@id":"https://cir.nii.ac.jp/crid/1361699994632988800","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Abiogenic Hydrocarbon Production at Lost City Hydrothermal Field"}]},{"@id":"https://cir.nii.ac.jp/crid/1361981469278598272","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Methanation of carbon dioxide on nickel(100) and the effects of surface modifiers"}]},{"@id":"https://cir.nii.ac.jp/crid/1361981469993419904","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"The Range of Spinel Compositions in Terrestrial Mafic and Ultramafic Rocks"}]},{"@id":"https://cir.nii.ac.jp/crid/1362262944738592640","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Abiotic methane in continental ultramafic rock systems: Towards a genetic model"}]},{"@id":"https://cir.nii.ac.jp/crid/1362544421320486784","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Hydrogen generation from mantle source rocks in Oman"}]},{"@id":"https://cir.nii.ac.jp/crid/1362825893883276928","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"ABIOTIC METHANE ON EARTH"}]},{"@id":"https://cir.nii.ac.jp/crid/1363107369798574336","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Abiotic methane formation during experimental serpentinization of olivine"}]},{"@id":"https://cir.nii.ac.jp/crid/1363388843664916096","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Low‐temperature catalytic <scp>CO</scp><sub>2</sub> hydrogenation with geological quantities of ruthenium: a possible abiotic <scp>CH</scp><sub>4</sub> source in chromitite‐rich serpentinized rocks"}]},{"@id":"https://cir.nii.ac.jp/crid/1363388844100413696","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Temperature trends for reaction rates, hydrogen generation, and partitioning of iron during experimental serpentinization of olivine"}]},{"@id":"https://cir.nii.ac.jp/crid/1363388845000324352","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Abiotic formation of hydrocarbons under hydrothermal conditions: Constraints from chemical and isotope data"}]},{"@id":"https://cir.nii.ac.jp/crid/1363388845783664512","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"The system hydrogen ‐ water up to 440°C and 2500 bar pressure"}]},{"@id":"https://cir.nii.ac.jp/crid/1363670319196653824","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"A reassessment of the potential for reduction of dissolved CO 2 to hydrocarbons during serpentinization of olivine"}]},{"@id":"https://cir.nii.ac.jp/crid/1363951793750760448","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Differentiating biotic from abiotic methane genesis in hydrothermally active planetary surfaces"}]},{"@id":"https://cir.nii.ac.jp/crid/1363951794155289856","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Widespread abiotic methane in chromitites"}]},{"@id":"https://cir.nii.ac.jp/crid/1364233269460639744","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Middle Archean ocean ridge hydrothermal metamorphism and alteration recorded in the Cleaverville area, Pilbara Craton, Western Australia"}]},{"@id":"https://cir.nii.ac.jp/crid/1370013168829313795","@type":"Product","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Reduction of CO2 during serpentinization of olivine at 300°C and 500 bar"}]},{"@id":"https://cir.nii.ac.jp/crid/1370013168829313813","@type":"Product","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Alpine‐type chromite in north Borneo, with special reference to daryel bay"}]},{"@id":"https://cir.nii.ac.jp/crid/2050025942005882880","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Reactions between komatiite and CO2-rich seawater at 250 and 350 °C, 500 bars : implications for hydrogen generation in the Hadean seafloor hydrothermal system"}]},{"@id":"https://cir.nii.ac.jp/crid/2050307416977929728","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Hydrogen and carbon isotope systematics in hydrogenotrophic methanogenesis under H2-limited and H2-enriched conditions : implications for the origin of methane and its isotopic diagnosis"}]},{"@id":"https://cir.nii.ac.jp/crid/2050588892134481920","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Theoretical constraints of physical and chemical properties of hydrothermal fluids on variations in chemolithotrophic microbial communities in seafloor hydrothermal systems"}]},{"@id":"https://cir.nii.ac.jp/crid/2051151842055759616","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Low-temperature conversion of carbon dioxide to methane in an electric field"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1029/2020gc009533"},{"@type":"KAKEN","@value":"PRODUCT-23874140"},{"@type":"OPENAIRE","@value":"doi_dedup___::0f92ec6bf080f89097407301f74f0984"},{"@type":"CROSSREF","@value":"10.1016/j.chemgeo.2024.122421_references_DOI_M83aJGYy2dIUYLTFCv2qj3svitK"}]}