GIMNAUT

Type Oceanographic cruise
Ship L'Atalante
Ship owner Ifremer
Dates 13/05/2000 - 08/06/2000
Chief scientist(s) DYMENT Jérôme ORCID, HEMOND Christophe

INSTITUT DE PHYSIQUE DU GLOBE DE PARIS - UMR 7154, UMS 3454

1 rue Jussieu

75005 Paris

+33 (0)1 83 95 74 00

https://www.ipgp.fr/
DOI 10.17600/10060
Objective

Dating recent ridge basalts using several radiodating methods. Recent variations in the geomagnetic field: developing a new dating tool? Influence of the Reunion island hot spot on the central Indian ridge. Detailed study was made of a slow to intermediate ridge in a hot mantle context. The related programmes are the French ridge programme and international InterRidge.

Data managed by SISMER

Bibliography

Publications

Zhu Hongli, Shan Yujie, Liao Renqiang, Zhang Lipeng, Deng Jianghong, Li Congying, Du Long, Zhang Zhaofeng, Sun Weidong (2025). Ca-Sr-Nd isotopic signatures of mid-ocean ridge basalts from the Central Indian Ridge and implications for recycled materials in the Indian Ocean mantle domain. Chemical Geology, 673, 122546 (14p.). https://doi.org/10.1016/j.chemgeo.2024.122546


Guillou Herve, Hemond Christophe, Singer Brad S., Dyment Jerome (2017). Dating young MORB of the Central Indian Ridge (19°S): Unspiked K-Ar technique limitations versus 40Ar/39Ar incremental heating method. Quaternary Geochronology, 37, 42-54. https://doi.org/10.1016/j.quageo.2016.10.002


Fueri Evelyn, Hilton David R., Murton Bramley J., Hemond Christophe, Dyment Jerome, Day James M. D. (2011). Helium isotope variations between Reunion Island and the Central Indian Ridge (17 degrees-21 degrees S): New evidence for ridge-hot spot interaction. Journal Of Geophysical Research-solid Earth, 116(B02207), 1-17. https://doi.org/10.1029/2010JB007609


Cordier Carole, Benoit Mathieu, Hemond Christophe, Dyment Jerome, Le Gall Bernard, Briais Anne, Kitazawa Mitsuko (2010). Time scales of melt extraction revealed by distribution of lava composition across a ridge axis. Geochemistry Geophysics Geosystems, 11(7 / Q0AC06), 1-10. https://doi.org/10.1029/2010GC003074


Nauret F., Abouchami W., Galer S. J. G., Hofmann A. W., Hemond C, Chauvel C, Dyment J (2006). Correlated trace element-Pb isotope enrichments in Indian MORB along 18-20 circle S, Central Indian Ridge. Earth And Planetary Science Letters, 245(1-2), 137-152. https://doi.org/10.1016/j.epsl.2006.03.015


References of Articles published in other Periodicals or Scientific Works acclaimed in the Field

Dyment J., Hémond C., and the Gimnaut Scientific Party, Deep-sea exploration of the Central Indian Ridge at 19°S, InterRidge News, 9(2), 29-32, 2000.

Dyment, J. Hémond, C. et l'équipe scientifique Gimnaut, Sur le front de mer : Campagne Gimnaut (N.O. L'Atalante, Nautile, mai juin 2000): Géochronologie, interaction point chaud-dorsale et magnétisme à l'axe de la dorsale centrale-indienne à 19°S, La Lettre Dorsale, 7/1-2, 20-21, 2000.

Dyment, J., Anomalies magnétiques et datation des fonds océaniques : quarante ans après Vine et Matthews. Rapport quadriennal 2000-2003 du Comité National Français de Géodésie et de Géophysique (CNFGG), 160-179, 2003.

References of International Seminar Communications

Dyment, J., Cruises Magofond 2 and Gimnaut Scientific Parties, Ifcpar Project 1911-1 Scientific Team, Past and present Indian Ocean ridges: exciting targets for mid-ocean ridge studies! InterRidge Workshop Tectonic and Oceanic Processes along the Indian Ridge System, Goa, Inde, janvier 2005.

Hémond, C., Dyment, J., Maia, M., & Gente, P., Two debated Ridge-Hotspot Interactions in the Indian Ocean: Rodrigues Ridge and St Paul-Amsterdam Plateau, InterRidge Workshop Tectonic and Oceanic Processes along the Indian Ridge System, Goa, Inde, janvier 2005.

Kitazawa M., Dyment J., Honsho C., Utada H. & Tamaki K., High resolution vector magnetic measurements onboard deep-sea vehicles: methodology and examples, IAGA 2005 Scientific Assembly, Toulouse, juillet 2005.

Kitazawa, M., Dyment, J., Chauvin, A., Horen, H., Utada, H., Tamaki , K. & Hémond, C., Seafloor dating within the Brunhes period with deep-sea vector magnetic anomalies, American Geophysical Union Fall meeting, San Francisco, décembre 2005.

Nauret F., Abouchami W., Galer S.J.G., Hofmann A.W., Hemond C., Dyment J. ; Recycled Oceanic Crust and Pelagic Sediment, into the Indian Mantle The Central Indian Ridge (18º-20ºS). InterRidge and Symposium Workshop: Tectonic and Oceanic Processes along the Indian Ocean Ridge System. Goa (India) janvier 2005.

Dyment, J., IFCPAR Project 1911-1 Scientific Team, and Cruises Magofond 2 and Gimnaut Scientific Parties, The Deccan-Reunion hotspot history : intraplate hotspot or hotspot-ridge interaction ? First Asia-Oceania Geophysical Society Annual Meeting, Singapour, juillet 2004.

Nauret, F., Sobolev, A.V., Hofmann, A.W., Hemond, C., Garnet component in first Indian MORB liquid: Melt inclusion evidence. EUG -AGU-EGS meeting, Nice., avril 2003.

Briais, A., Maia, M., Dyment, J. & Gente, P., Influence of the Reunion hotspot on the Central Indian Ridge, InterRidge Symposium and Workshop "Ridge-hotspot interaction: recent progress and prospects for enhanced international collaboration", Brest, septembre 2003.

Dyment, J., Chauvin, A., Horen, H., Kitazawa, M. & Hemond, C., High resolution dating of the seafloor 40 years after Vine & Matthews: insights from magnetic anomalies, rock magnetic properties, and paleointensity measurements across the Central Indian Ridge, 19°S, IUGG General Assembly, Sapporo, juillet 2003.

Dyment, J., Cruise Magofond 2 Scientific Party & Cruise Gimnaut Scientific Party, Interaction between the Deccan-Reunion hotspot and the Central Indian Ridge : present. InterRidge Symposium and Workshop "Ridge-hotspot interaction: recent progress and prospects for enhanced international collaboration", Brest, septembre 2003.

Kitazawa, M., Dyment, J. & Tamaki, K., Dating the seafloor with unprecedented resolution using geomagnetic intensity variations: initial results from deep-sea three components magnetic records onboard a submersible on the Central Indian Ridge, 19° S. American Geophysical Union Fall meeting, San Francisco, décembre 2002.

Nauret F., Abouchami W., Galer S..J.G., Hofmann A. W., Hemond C., Snow J.E., Michard A. & Chauvel C., High precision Pb isotopes in Indian Ocean MORB; AGU Fall Meeting, San Francisco, décembre 2002.

Nauret F., Abouchami W., Galer S.J.G., Hofmann A.W. & Hemond C., Sr-Pb isotopic evidence for plume-ridge interaction along the Central Indian Ridge; In 12th Annual V.M. Goldschmidt Conference abstract, Geochimica et Cosmochimica Acta, Special supplement vol.66-S1, page A547, août 2002.

Nauret F., Sobolev A.V., Hofmann A.W. & Hemond C., Eclogitic recycled component in Indian Ocean shallow mantle. Melt inclusion evidences. Workshop on volcanic systems, Geochemical and geophysical monitoring: Melt inclusions, methods, applications and problems, Naples, septembre 2002.

Dyment, J., Hémond, C. & Project Gimnaut Scientific Team, Geomagnetic paleointensity variations as a cheap, high-resolution geochronometer for recent mid-ocean ridge processes. American Geophysical Union (AGU), San Francisco, Décembre 2001.

Dyment, J., Hémond, C. & Project Gimnaut Scientific Team, Geomagnetic paleointensity variations as a cheap, high-resolution geochronometer for recent mid-ocean ridge processes. International Association of Geomagnetism and Aeronomy (IAGA), Hanoi, août 2001.

Dyment, J., Hémond, C. & The Gimnaut Scientific Party, Deep-sea exploration and sea-surface magnetics on the Central Indian Ridge at 19°S: initial results of Cruise Gimnaut. European Union of Geosciences (EUG), Strasbourg, avril 2001.

Nauret, F., Hemond, C., Hofmann, A. & Dyment, J., Hotspot-ridge interaction between 18°30' and 20°S along the Central Indian Ridge. American Geophysical Union (AGU), San Francisco, décembre 2001.

Dyment, J., Hémond, C. & the Gimnaut Scientific Party, Deep-sea exploration of the Central Indian Ridge at 19°S. American Geophysical Union (AGU), San Francisco, décembre 2000.

References of National Seminar Communications

Dyment, J., Cruise Magofond 2 Scientific Party, Cruise Gimnaut Scientific Party, & IFCPAR Project 1911-1 Scientific Team, The Deccan-Reunion hotspot history : intraplate hotspot or hotspot-ridge interaction ? Discussion Meeting «Oceanic Intraplate Volcanism» co-sponsored by the Royal Astronomical Society and the British Geophysical Association, Londres, février 2004.

Kitazawa, M., Dyment, J., Asada, M., Tamaki, K. & Hemond, C., Geomagnetic records over the last 780 kyr obtained by a submersible magnetometer at the Central Indian Ridge, 19°S. Japan Earth and Planetary Science Joint Meeting, Tokyo, mai 2002.

Dyment, J., Hémond, C. & l'équipe de projet Gimnaut, Datation des événements récents : vers l'établissement d'un géochronomètre magnétique de haute résolution ? Réunion spécialisée de la Société Géologique de France "Datation des événements récents", Paris, avril 2001.

Dyment, J., Kitazawa, M., Hemond, C., Asada, M. & Tamaki, K., Diving by the submersible Nautile at the Rodriguez segment at the Central Indian Ridge. Japan Earth and Planetary Science Joint Meeting, Tokyo, juin 2001.

Chaubey, A.K., Dyment, J., Magofond 2 & Gimnaut Scientific Parties, Tiny wiggles on sea-surface, deep tow and deep-sea submersible magnetics in the Indian Ocean. Indian Geophysical Union, Cochin, Inde, décembre 2000.

DEA or MASTER 2 using campaign data

Gilles Charreteur. Master 2 : Mention Géosciences Océan. Université de Bretagne Occidentale « Cyclicités chimique et isotopique de part et d?autre de la dorsale centrale Indienne depuis 800 ka ». février-juin 2005 (en cours).

Gilles Charreteur. Maîtrise des Sciences de la Terre, Université de Bretagne Occidentale, stage de TER (avril-juin 2003).

Mitsuko Kitazawa. Ocean Research Institute, University of Tokyo (Japon). Geomagnetic records over the last 780 kyr obtained by a Deep-Sea Three Components Magnetometer onboard a submersible at the Central Indian Ridge. Master of Science, soutenu en février 2002.

Sandrine Corre. Maîtrise des Sciences de la Terre, Université de Bretagne Occidentale. "Traitement des données gravimétriques de la campagne Gimnaut : modélisation et interprétation de l'isostasie sous les rides volcaniques des Trois Mages et de Gasitao", stage de TER (avril-juin 2001), soutenu en juin 2001.

Vincent Drévillon. DEA Geosciences Marines, Université de Bretagne Occidentale, Institut Universitaire Européen de la Mer, CNRS UMR 6538. "Structure d?une transition de polarité magnétique : apport des données magnétiques de fond et de surface, conséquences sur les processus de l?accrétion", stage de DEA, soutenu en juin 2001.

Thesis using campaign data

Antoine Le Faouder. Université de Bretagne Occidentale, Institut Universitaire Européen de la Mer, CNRS UMR 6538, thèse soutenue le 10 juillet 2006.

Carole Cordier. Université de Bretagne Occidentale, Institut Universitaire Européen de la Mer, CNRS UMR 6538, thèse soutenue le 1er décembre 2006.

Mitsuko Kitazawa. Institut de Physique du Globe de Paris, CNRS UMR 7154, thèse soutenue le 18 septembre 2006.

François Nauret. Max Plank Institüt für Chemie, Mayence (RFA), thèse soutenue le 14 mai 2004.

Esthèle Maina. Université de Bretagne Occidentale, Institut Universitaire Européen de la Mer, CNRS UMR 6538, thèse interrompue en juin 2003 après deux années de travail, pour raisons personnelles.