References of "Javaux, Emmanuelle"
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See detailEvolution de la vie pendant les quatre premiers milliards d’années
Javaux, Emmanuelle ULg

in Bulletin de la Société Royale des Sciences de Liège (2009), 79

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See detailForaminifera in elevated Bermudian caves provide further evidence for +21 m eustatic sea level during Marine Isotope Stage 11
van hengstum, P. J.; Scott, David; Javaux, Emmanuelle ULg

in Quaternary Science Reviews (2009), 28(19-20), 1850-1860

Two hypotheses have been proposed to explain the origin of marine isotope stage (MIS) 11 deposits in small Bermudian caves at þ21 m above modern sea level: (1) a þ21 m MIS 11 eustatic sea-level highstand ... [more ▼]

Two hypotheses have been proposed to explain the origin of marine isotope stage (MIS) 11 deposits in small Bermudian caves at þ21 m above modern sea level: (1) a þ21 m MIS 11 eustatic sea-level highstand, and (2) a MIS 11 mega-tsunami event. Importantly, the foraminifera reported in these caves have yet to be critically evaluated within a framework of coastal cave environments. After statistically comparing foraminifera in modern Bermudian littoral caves and the MIS 11 Calonectris Pocket A (þ21 m cave) to the largest available database of Bermudian coastal foraminifera, the assemblages found in modern littoral caves – and Calonectris Pocket A – cannot be statistically differentiated from lagoons. This observation is expected considering littoral caves are simply sheltered extensions of a lagoon environment in the littoral zone, where typical coastal processes (waves, storms) homogenize and rework lagoonal, reefal, and occasional planktic taxa. Fossil protoconchs of the Bermudian cave stygobite Caecum caverna were also associated with the foraminifera. These results indicate that the MIS 11 Bermudian caves are fossil littoral caves (breached flank margin caves), where the total MIS 11 microfossil assemblage is preserving a signature of coeval sea level at þ21 m. Brackish foraminifera (Polysaccammina, Pseudothurammina) and anchialine gastropods (w95%, >300 individuals) indicate a brackish anchialine habitat developed in the elevated caves after the prolonged littoral environmental phase. The onset of sea-level regression following the þ21 m highstand would first lower the ancient brackish Ghyben-Herzberg lens (<0.5 m) and flood the cave with brackish water, followed by drainage of the cave to create a permanent vadose environment. These interpretations of the MIS 11 microfossils (considering both taphonomy and paleoecology) are congruent with the micropaleontological, hydrogeological and physical mechanisms influencing modern Bermudian coastal cave environments. In conclusion, we reject the mega-tsunami hypothesis, concur with the þ21 m MIS 11 eustatic sea-level hypothesis, and reiterate the need to resolve the disparity between global marine isotopic records and the physical geologic evidence for sea level during MIS 11. [less ▲]

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See detailMicrofossils
Javaux, Emmanuelle ULg; Benzerara, karim

in Comptes Rendus Palevol (2009), 8(7), 605-615

Defining biosignatures, i.e. features that are indicative of past or present life, has been one of the major strategies developed over the last few years for the search of life on the early Earth and in ... [more ▼]

Defining biosignatures, i.e. features that are indicative of past or present life, has been one of the major strategies developed over the last few years for the search of life on the early Earth and in the solar system. Current knowledge about microscopic remnants of fossil organisms, namely microfossils are reviewed, focusing on: (i) studies of recent environments used as analogues for the early Earth or extraterrestrial environments; (ii) examination of Precambrian rocks; and (iii) laboratory experiments simulating biotic and abiotic processes and resulting in the formation of genuine or pseudomicrofossils. Fossils’ preservation depends on environment and chemical composition of the primary structure, although they might undergo taphonomic processes that alter their morphology and/or composition. Altogether, these examples illustrate what can be potentially preserved during the very first stages of fossilization and what can be left in the geological record after diagenesis and metamorphism. Finally, this provides a rationale to tentatively define diagnosis criteria for microfossils or ways to look for life on Earth or in extraterrestrial environments. [less ▲]

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See detailAstrobiologie cours-conférence du Collège Belgique (ARB)
Javaux, Emmanuelle ULg; Wilmotte, Annick ULg; Claeys, Philippe et al

Learning material (2009)

cours enregistrés sur le site de l'ARB (http://www.academieroyale.be/)

Detailed reference viewed: 37 (8 ULg)
See detailEANA European Astrobiology workhop, Program and abstracts
Javaux, Emmanuelle ULg; Dehant, Véronique; Muller, Christian

Book (2009)

EANA Euroepan Astrobiology workhop, Program and abstracts, Brussels 12-14 oct 2009

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See detailDiversité et limites de la vie
Wilmotte, Annick ULg; Javaux, Emmanuelle ULg

Conference (2009)

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See detailMicrofossils in Paleoproterozoic siliciclastic successions of Karelia, Russia
Medvedev, Pavel; Javaux, Emmanuelle ULg

Conference (2008, April)

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See detailOrganic-walled microfossils in Mesoarchean shallow-water siliciclastic deposits.
Javaux, Emmanuelle ULg; Marshall, Craig; Bekker, Andrey

Conference (2008)

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See detailStrategies for life detection
Botta; Javaux, Emmanuelle ULg; Summons, R. et al

Book published by springer verlag (2008)

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See detailEvolution de la biosphère au Précambrien et implications pour l’astrobiologie
Javaux, Emmanuelle ULg

in Bulletin de l'Académie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique. Sciences (2008), XVIII(1-6), 1-39

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See detailAstrobiology : origin, evolution and distribution of life in the universe
Javaux, Emmanuelle ULg

in CAPAS Bulletin de l'Académie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique. Sciences (2008)

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See detailProbable microfossils in 3.2 Ga-old shallow-water siliciclastic deposits
Javaux, Emmanuelle ULg; Marshall, Craig; Bekker, Andrey

Conference (2008)

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See detailStrategies of life detection - Foreword
Bada, J. L.; Gomez-Elvira, J.; Javaux, Emmanuelle ULg et al

in Space Science Reviews (2008), 135(1-4), 1-3

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See detailAstrobiologie
Javaux, Emmanuelle ULg; Claeys, Philippe; Dehant, Véronique et al

Learning material (2008)

powerpoint sur MyULg, notes partielles imprimées

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See detail"Strategies of life detection": Summary and outlook
Botta, Oliver; Bada, Jeffrey L; Gomez-Elvira, Javier et al

in Space Science Reviews (2008), 135(1-4), 371-380

Detailed reference viewed: 24 (13 ULg)
See detailWater and Habitability, FNRS contact group workshop, Abstracts and Program, ROB Brussels nov 20th 2008
Dehant, Véronique; Javaux, Emmanuelle ULg

Book (2008)

Water and Habitability, FNRS contact group workshop, Abstracts and Program, ROB Brussels nov 20th 2008

Detailed reference viewed: 7 (0 ULg)