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<datestamp>2018-01-11</datestamp>
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<title lang=en>Fossil evidence for serpentinization fluids fueling chemosynthetic assemblages</title>
<creator>Lartaud, Franck</creator>
<creator>Little , Crispin T.S.</creator>
<creator>De Rafelis, Marc</creator>
<creator>Bayon, Germain</creator>
<creator>Dyment, Jerome</creator>
<creator>Ildefonse, Benoit</creator>
<creator>Gressier, Vincent</creator>
<creator>Fouquet, Yves</creator>
<creator>Gaill, Françoise</creator>
<creator>Le Bris, Nadine</creator>
<contributor>Laboratoire d'Ecogéochimie des environnements benthiques (LECOB) ; Université Pierre et Marie Curie - Paris 6 (UPMC) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>School of Earth and Environment [Leeds] (SEE) ; University of Leeds</contributor>
<contributor>Unité de recherche Géosciences Marines (Ifremer) (GM) ; Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)</contributor>
<contributor>Institut de Physique du Globe de Paris (IPGP) ; Institut national des sciences de l'Univers (INSU - CNRS) - IPG PARIS - Université Paris Diderot - Paris 7 (UPD7) - Université de la Réunion (UR) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Institut des Sciences de la Terre de Paris (iSTeP) ; Université Pierre et Marie Curie - Paris 6 (UPMC) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Institut de Recherche pour le Développement (IRD)</contributor>
<contributor>Laboratoire Environnements Profonds ; Institut Français de Recherche pour l’Exploitation de la Mer</contributor>
<description>International audience</description>
<source>ISSN: 0027-8424</source>
<source>EISSN: 1091-6490</source>
<source>Proceedings of the National Academy of Sciences of the United States of America </source>
<publisher>National Academy of Sciences</publisher>
<identifier>insu-01352929</identifier>
<identifier>https://hal-insu.archives-ouvertes.fr/insu-01352929</identifier>
<identifier>https://hal-insu.archives-ouvertes.fr/insu-01352929/document</identifier>
<identifier>https://hal-insu.archives-ouvertes.fr/insu-01352929/file/PNAS-2011-Lartaud-7698-703.pdf</identifier>
<source>https://hal-insu.archives-ouvertes.fr/insu-01352929</source>
<source>Proceedings of the National Academy of Sciences of the United States of America , National Academy of Sciences, 2011, 108, pp.7698-7703. 〈10.1073/pnas.1009383108〉</source>
<identifier>DOI : 10.1073/pnas.1009383108</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1073/pnas.1009383108</relation>
<language>en</language>
<subject lang=en>mid-ocean ridge</subject>
<subject lang=en>ecogeochemistry</subject>
<subject lang=en>Bathymodiolus</subject>
<subject lang=en>Ghost City</subject>
<subject lang=en>ultramafic-hosted</subject>
<subject>[SDU] Sciences of the Universe [physics]</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Among the deep-sea hydrothermal vent sites discovered in thepast 30 years, Lost City on the Mid-Atlantic Ridge (MAR) isremarkable both for its alkaline fluids derived from mantle rockserpentinization and the spectacular seafloor carbonate chimneysprecipitated from these fluids. Despite high concentrations ofreduced chemicals in the fluids, this unique example of a serpentinite-hosted hydrothermal system currently lacks chemosyntheticassemblages dominated by large animals typical of high-temperaturevent sites. Here we report abundant specimens of chemosymbioticmussels, associated with gastropods and chemosymbioticclams, in approximately 100 kyr old Lost City-like carbonates fromthe MAR close to the Rainbow site (36 °N). Our finding shows thatserpentinization-related fluids, unaffected by high-temperaturehydrothermal circulation, can occur on-axis and are able to sustainhigh-biomass communities. The widespread occurrence of seafloorultramafic rocks linked to likely long-range dispersion of ventspecies therefore offers considerably more ecospace for chemosyntheticfauna in the oceans than previously supposed</description>
<date>2011-03-24</date>
</dc>
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