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<title lang=en>Fossil clams from a serpentinite-hosted sedimented vent field near the active smoker complex Rainbow, MAR, 36 degrees 13 ' N: Insight into the biogeography of vent fauna</title>
<creator>Lartaud, Franck</creator>
<creator>de Rafélis, Marc</creator>
<creator>Oliver, Graham</creator>
<creator>Krylova, Elena</creator>
<creator>Dyment, Jerome</creator>
<creator>Ildefonse, Benoit</creator>
<creator>Thibaud, Remy</creator>
<creator>Gente, Pascal</creator>
<creator>Hoise, Eva</creator>
<creator>Meistertzheim, Anne-Leila</creator>
<creator>Fouquet, Yves</creator>
<creator>Gaill, Françoise</creator>
<creator>Le Bris, Nadine</creator>
<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>Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) ; Institut de Recherche pour le Développement (IRD) - Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) - Université de Brest (UBO) - Institut Universitaire Européen de la Mer (IUEM) ; Institut de Recherche pour le Développement (IRD) - Université de Brest (UBO) - Centre National de la Recherche Scientifique (CNRS) - Institut de Recherche pour le Développement (IRD) - Université de Brest (UBO) - Centre National de la Recherche Scientifique (CNRS) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>National Museum of Wales - Cardiff</contributor>
<contributor>P.P. Shirshov Institute of Oceanology (SIO) ; Russian Academy of Sciences [Moscow] (RAS)</contributor>
<contributor>Laboratoire de Géosciences Marines (LGM) ; Université Pierre et Marie Curie - Paris 6 (UPMC) - IPG PARIS - Université Paris Diderot - Paris 7 (UPD7) - 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>Naval Academy Research Institute ; Naval Academy Research Institute</contributor>
<contributor>Domaines Océaniques (LDO) ; Centre National de la Recherche Scientifique (CNRS) - Institut d'écologie et environnement - Observatoire des Sciences de l'Univers - Université de Brest (UBO) - Institut national des sciences de l'Univers (INSU - CNRS)</contributor>
<contributor>Laboratoire de géologie de l'ENS (LGE) ; École normale supérieure - Paris (ENS Paris) - Institut national des sciences de l'Univers (INSU - CNRS) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Biologie et écologie tropicale et méditerranéenne (BETM) ; Université de Perpignan Via Domitia (UPVD) - École pratique des hautes études (EPHE) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Systématique, adaptation, évolution (SAE) ; Université Pierre et Marie Curie - Paris 6 (UPMC) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<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>Laboratoire Environnement Profond (LEP) ; Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)</contributor>
<description>International audience</description>
<source>ISSN: 1525-2027</source>
<source>EISSN: 1525-2027</source>
<source>Geochemistry, Geophysics, Geosystems</source>
<publisher>AGU and the Geochemical Society</publisher>
<identifier>hal-00523467</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00523467</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00523467/document</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00523467/file/G3-Lartaud-_-al.pdf</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00523467</source>
<source>Geochemistry, Geophysics, Geosystems, AGU and the Geochemical Society, 2010, 11, pp.Q0AE01. 〈10.1029/2010GC003079〉</source>
<identifier>DOI : 10.1029/2010GC003079</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1029/2010GC003079</relation>
<language>en</language>
<subject lang=en>ultramafic-hosted</subject>
<subject lang=en>Mid-Atlantic Ridge</subject>
<subject lang=en>bivalve shells</subject>
<subject lang=en>Vesicomyidae</subject>
<subject lang=en>Thyasiridae</subject>
<subject lang=en>carbon and oxygen isotopes</subject>
<subject>[SDU.STU.OC] Sciences of the Universe [physics]/Earth Sciences/Oceanography</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Hydrothermal circulation at ultramafic-hosted sites supports a large variety of high-and low-temperature hydrothermal vents and associated ecosystems. The discovery of abundant fossil vesicomyid and thyasirid shell accumulations at the ridge crest, approximately 2.5 km east of the active Rainbow vent field on the Mid-Atlantic Ridge (MAR, 36 degrees 13'N), increased our knowledge regarding the diversity of vent communities at slow spreading ridges. Bivalve molluscs of the family Vesicomyidae were represented by the genus Phreagena. Here we present the first record of this genus in the Atlantic Ocean. This second vesicomyid species known from the MAR, Phreagena sp., was found to be associated with a Thyasira species that is affiliated with T. southwardae (at the Logatchev vent field on the MAR) and with T. vulcolutre (in the Gulf of Cadiz). These two clams have close relationships with seep taxa along the continental margin, and were likely associated with sedimented vent fields. delta O-18 and delta C-13 analyses of the shells suggested that the burrowing bivalve Thyasira could incorporate isotopically light carbon, derived from the oxidation of methane in the sediment, while the signature of Phreagena sp. shells denoted a different carbonate source. C-14 dating of the shells denoted that the hydrothermal activity in the Rainbow area began at least similar to 25.5 kyr BP, which is similar to the model of the hydrothermal vent field distribution that was proposed for the Logatchev hydrothermal site. The results provide new insight regarding the diversity of chemosynthetic fauna on the MAR over geologic time. Ultramafic-hosted, on-axis sedimented vent fields extend the range of habitats for chemosynthetic communities, underlying the need to further explore the geology of these types of environments on slow-spreading ridges and to determine their role in the ecology of deep-sea vent communities.</description>
<date>2010</date>
</dc>
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