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Environmental Context

dc.contributor.authorMARTIN, H.
dc.contributor.authorCLAEYS, P.
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorGARGAUD, M.
dc.contributor.authorPINTI, D.
dc.contributor.authorSELSIS, Franck
dc.date.issued2006
dc.identifier.issn0167-9295
dc.description.abstractEnOn Earth, the Archaean aeon lasted from 4.0 to 2.5 Ga; it corresponds to a relatively stable period. Compared with today, internal Earth heat production was several times greater resulting in high geothermal flux that induced the genesis of rocks such as komatiites and TTG suites, which are no more generated on Earth since 2.5 Ga. Similarly, the details of plate tectonic modalities (plate size, plate motion rate, plate thickness, tectonic style, irregular crustal growth, etc...) were different of modern plate tectonics. Both atmosphere and ocean compositions have been progressively modified and the greater heat production favoured the development of hydrothermalism and therefore created niches potentially favourable for the development of some forms of life. Catastrophic events such as giant meteorite falls or world-sized glaciations drastically and suddenly changed the environment of Earth surface, thus being able to strongly affect development of life. Even if specialists still debate about the age of the oldest indubitable fossil trace of life, Archaean can be considered as having been extremely favourable for life development and diversification.
dc.language.isoen
dc.publisherSpringer Verlag
dc.subject.enArchaean
dc.subject.encontinental growth
dc.subject.enatmosphere and ocean evolution
dc.subject.enmeteoritic impacts
dc.subject.englaciations
dc.subject.enyoung sun
dc.titleEnvironmental Context
dc.typeArticle de revue
dc.identifier.doi10.1007/s11038-006-9090-x
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]
bordeaux.journalEarth, Moon, and Planets
bordeaux.page205-245
bordeaux.volume98
bordeaux.peerReviewedoui
hal.identifierhal-00120090
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00120090v1
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