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A Hydrothermal-Sedimentary Context for the Origin of Life

hal.structure.identifierCentre de biophysique moléculaire [CBM]
dc.contributor.authorWESTALL, Frances
hal.structure.identifierCentre de biophysique moléculaire [CBM]
dc.contributor.authorHICKMAN-LEWIS, Keyron
dc.contributor.authorHINMAN, Nancy
hal.structure.identifierInstitut des Sciences de la Terre d'Orléans - UMR7327 [ISTO]
hal.structure.identifierBiogéosystèmes Continentaux - UMR7327
dc.contributor.authorGAUTRET, Pascale
hal.structure.identifierSchool of Environment [Auckland, New Zealand]
dc.contributor.authorCAMPBELL, Kathleen
hal.structure.identifierGéoHydrosystèmes COntinentaux [GéHCO EA6293]
dc.contributor.authorBRÉHÉRET, Jean-Gabriel
hal.structure.identifierCentre de biophysique moléculaire [CBM]
dc.contributor.authorFOUCHER, Frédéric
hal.structure.identifierCentre de biophysique moléculaire [CBM]
dc.contributor.authorHUBERT, Axelle
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorSORIEUL, Stephanie
hal.structure.identifierCentre de biophysique moléculaire [CBM]
dc.contributor.authorDASS, Avinash Vicholous
hal.structure.identifierSchool of Chemistry [Leeds]
dc.contributor.authorKEE, Terence
hal.structure.identifierLaboratoire de Réactivité de Surface [LRS]
hal.structure.identifierCentre de biophysique moléculaire [CBM]
dc.contributor.authorGEORGELIN, Thomas
hal.structure.identifierCentre de biophysique moléculaire [CBM]
dc.contributor.authorBRACK, André
dc.date.issued2018-02-28
dc.identifier.issn1531-1074
dc.description.abstractEnCritical to the origin of life are the ingredients of life, of course, but also the physical and chemical conditions in which prebiotic chemical reactions can take place. These factors place constraints on the types of Hadean environment in which life could have emerged. Many locations, ranging from hydrothermal vents and pumice rafts, through volcanic-hosted splash pools to continental springs and rivers, have been proposed for the emergence of life on Earth, each with respective advantages and certain disadvantages. However, there is another, hitherto unrecognized environment that, on the Hadean Earth (4.5-4.0Ga), would have been more important than any other in terms of spatial and temporal scale: the sedimentary layer between oceanic crust and seawater. Using as an example sediments from the 3.5-3.33Ga Barberton Greenstone Belt, South Africa, analogous at least on a local scale to those of the Hadean eon, we document constant permeation of the porous, carbonaceous, and reactive sedimentary layer by hydrothermal fluids emanating from the crust. This partially UV-protected, subaqueous sedimentary environment, characterized by physical and chemical gradients, represented a widespread system of miniature chemical reactors in which the production and complexification of prebiotic molecules could have led to the origin of life. Key Words: Origin of lifeHadean environmentMineral surface reactionsHydrothermal fluidsArchean volcanic sediments.
dc.description.sponsorship/
dc.language.isoen
dc.publisherMary Ann Liebert
dc.title.enA Hydrothermal-Sedimentary Context for the Origin of Life
dc.typeArticle de revue
dc.identifier.doi10.1089/ast.2017.1680
dc.subject.halChimie
bordeaux.journalAstrobiology
bordeaux.page259-293
bordeaux.volume18
bordeaux.issue3
bordeaux.peerReviewedoui
hal.identifierhal-01740060
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01740060v1
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