MARGATS

Type Oceanographic cruise
Ship L'Atalante
Ship owner Ifremer
Dates 21/10/2016 - 15/11/2016
Chief scientist(s) GRAINDORGE David , KLINGELHOEFER Frauke ORCID

GEO-OCEAN - UMR 6538

Univ. Brest, CNRS, Ifremer, Univ. Bretagne Sud

Place Nicolas Copernic

29280 Plouzané

https://www.geo-ocean.fr/
DOI 10.17600/16001400
Objective This cruise is proposed to provide new answer on the dynamics and the evolution of transform passive continental margins. The objective is more precisely to characterize the crustal structure and evolution of marginal plateaux, sub-marine reliefs that are associated to 30 % of the transform margins in the world. These reliefs are systematically observed at the junction of different ages in relay zones between divergent and transform segments. Their building remains enigmatic although they represent reliefs established in geodynamical nubs that are keys ton understand the localisation of transform margins. This project MARGATS intend to image the deep structure of the marginal plateau (wide angle seismic and multichannel seismic MCS). The experimental site proposed is the Demerara plateau offshore French Guyana and Surinam and located at the junction between Central Atlantic locally opened in a divergent mode and Equatorial Atlantic opened mainly in transform mode in the area. Hence, this plateau has recorded at its different borders the divergent opening of the central Atlantic and the tranform opening of the Equatorial Atlantic. It may be this situation itself that leads to the formation of the plateau, but it requires to precisely constraint its deep internal structure. Finally the Demerara plateau is one of the more studied with petroleum seismic data and high resolution seismic data. It is then one of the ideal place to conduct a high resolution wide-angle deep seismic survey.

Published data

Klingelhoefer Frauke, Roest Walter, Graindorge David (2021). Raw data from a wide-angle seismic survey offshore French Guyana and Surinam. https://doi.org/10.17882/79396


Data managed by SISMER

Bibliography

Publications

Padron Mora Crelia, Klingelhoefer FraukeORCID, Roest WalterORCID, Graindorge David, Loncke Lies, Basile Christophe, Sapin François, Lesourd-Laux Thomas, Museur Thomas, The Margats Team (2022). Volcanic influence during the formation of a transform marginal plateau: Insights from wide-angle seismic data along the northwestern Demerara Plateau. Tectonophysics, 842, 229592 (21p.). Publisher's official version : https://doi.org/10.1016/j.tecto.2022.229592 , Open Access version : https://archimer.ifremer.fr/doc/00796/90832/


Graindorge David, Museur Thomas, Klingelhoefer FraukeORCID, Roest WalterORCID, Basile C., Loncke L., Sapin F., Heuret A., Perrot Julie, Marcaillou B., Lebrun J-F, Déverchère Jacques (2022). Deep structure of the Demerara Plateau and its two-fold tectonic evolution: from a volcanic margin to a Transform Marginal Plateau, insights from the conjugate Guinea Plateau. Geological Society, London, Special Publications, 524(1), ??? Publisher's official version : https://doi.org/10.1144/SP524-2021-96 , Open Access version : https://archimer.ifremer.fr/doc/00752/86398/


Basile Christophe, Loncke Lies, Roest WalterORCID, Graindorge David, Klingelhoefer FraukeORCID, Museur Thomas, Heuret Arnaud, Lesourd-Laux Thomas, Vetel William (2022). Initiation of transform continental margins: the Cretaceous margins of the Demerara plateau. Geological Society, London, Special Publications, 524(1), ?? Publisher's official version : https://doi.org/10.1144/SP524-2021-118 , Open Access version : https://archimer.ifremer.fr/doc/00748/86015/


Tallobre Cédric, Loncke Lies, Droz Laurence, Marsset TaniaORCID, Uusõue Mirjam, Roest WalterORCID, Fanget Anne-Sophie, Bassetti Maria-Angela, Giresse Pierre, Bayon Germain (2021). Echofacies interpretation of Pleistocene to Holocene contourites on the Demerara plateau and abyssal plain. Interpretation-a Journal Of Subsurface Characterization, 9(2), SB49-SB65. Publisher's official version : https://doi.org/10.1190/INT-2020-0159.1 , Open Access version : https://archimer.ifremer.fr/doc/00680/79223/


Biari Youssef, Klingelhoefer FraukeORCID, Franke Dieter, Funck Thomas, Loncke Lies, Sibuet Jean-Claude, Basile Christophe, Austin James A., Rigoti Caesar Augusto, Sahabi Mohamed, Benabdellouahed Massinissa, Roest WalterORCID (2021). Structure and evolution of the Atlantic passive margins: a review of existing rifting models from wide-angle seismic data and kinematic reconstruction. Marine And Petroleum Geology, 126, 104898 (43p.). Publisher's official version : https://doi.org/10.1016/j.marpetgeo.2021.104898 , Open Access version : https://archimer.ifremer.fr/doc/00676/78762/


Museur Thomas, Graindorge David, Klingelhoefer FraukeORCID, Roest WalterORCID, Basile C., Loncke L., Sapin F. (2021). Deep structure of the Demerara Plateau: From a volcanic margin to a Transform Marginal Plateau. Tectonophysics, 803, 228645 (22p.). Publisher's official version : https://doi.org/10.1016/j.tecto.2020.228645 , Open Access version : https://archimer.ifremer.fr/doc/00658/77014/


Basile Christophe, Girault Igor, Paquette Jean-Louis, Agranier Arnaud, Loncke Lies, Heuret Arnauld, Poetisi Ewald (2020). The Jurassic magmatism of the Demerara Plateau (offshore French Guiana) as a remnant of the Sierra Leone hotspot during the Atlantic rifting. Scientific Reports, 10(1), 7486 (12p.). Publisher's official version : https://doi.org/10.1038/s41598-020-64333-5 , Open Access version : https://archimer.ifremer.fr/doc/00628/74034/


Fanget Anne-Sophie, Loncke Lies, Pattier France, Marsset TaniaORCID, Roest WalterORCID, Tallobre Cédric, Durrieu De Madron Xavier, Hernandez Molina F. Javier (2020). A synthesis of the sedimentary evolution of the Demerara Plateau (Central Atlantic Ocean) from the late Albian to the Holocene. Marine And Petroleum Geology, 114, 104195 (16p.). Publisher's official version : https://doi.org/10.1016/j.marpetgeo.2019.104195 , Open Access version : https://archimer.ifremer.fr/doc/00599/71125/


Loncke L., Roest WalterORCID, Klingelhoefer FraukeORCID, Basile C., Graindorge David, Heuret A., Marcaillou B., Museur Thomas, Fanget Anne-Sophie, Mercier De Lépinay M. (2020). Transform Marginal Plateaus. Earth-science Reviews, 203, 102940 (32p.). Publisher's official version : https://doi.org/10.1016/j.earscirev.2019.102940 , Open Access version : https://archimer.ifremer.fr/doc/00512/62407/


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

EN PREPARATION : D. Graindorge, C. Basile, A. Heuret, F. Klingelhoefer, L. Loncke, F. Sapin, W. R. Roest, (2020). le Plateau de Demerara et la marge guyanaise. Revue "Géologues" numéro spécial Guyanes

References of Technical Reports

David Graindorge, W. Roest and MARGATS scientific team, MARGATS Cruise Report for Suriname, IUEM / UBO / UBL et partenaires, Juin 2017, 85 p

David Graindorge, W. Roest et équipe MARGATS, Rapport de mission de la campagne MARGATS, IUEM / UBO / UBL et partenaires, Mars 2017, 150 p

Apprioual Ronan, Crozon Jacques, Fabre Maud, Fernagu Philippe, Guyavarch Pierre, Prunier Christophe (2016). Rapport technique OBS. Campagne MARGATS. Du 18/10/2016 au 18/11/2016. REM/GM/SCTDI/2016_02.


References of Articles published in periodicals and magazines for the general public

A. Heuret, (2017). Formation basée sur les résultats des différentes missions sur le Plateau de Demerara dans le cadre des formations de "La Maison pour la Science de Guyane" (formation continue des enseignants du secondaire)

A. Heuret, J. Perrot. (nov. 2016). L'exploration océanographique du Plateau de Demerara - Missions IGUANES, DRADEM & MARGATS, Les jeudis du Patrimoine, CIAP de Saint-Laurent-du-Maroni

David Graindorge, W. Roest et équipe MARGATS, Mission MARGATS « comprend la géologie des abysses océaniques des Guyanes », Une saison en Guyane, Les bruits de l'Océan, Décembre 2016, http://www.une-saison-en-guyane.com/breves/les-bruits-de-locean/mission-margats-comprend-la-geologie-des-abysses-oceaniques-des-guyanes/

David Graindorge, W. Roest et équipe MARGATS, Un mystérieux plateau sous-marin, Sciences Ouest, dec 2016, N°347

Interview Radio Campus Cayenne 2016 : http://www.mayouricampus.com/podcasts/l-exploration-scientifique-du-plateau-de-demerara-127

Marine Jacques (David Graindorge, W. Roest et équipe MARGATS), Immersion dans les fonds marins, France Guyane, 18/11/2016

Mélanie Chartier (David Graindorge, W. Roest et équipe MARGATS), Guyane : des sédiments de 100 millions d'années, Le Marin, 8/12/2016

On peut notamment ajouter les conférences, interviews et sites internet entre autres :

https://www.univ-guyane.fr/conference-sur-lexploration-scientifique-du-plateau-de-demerara/

http://meretmarine.com/fr/content/bilan-de-lexploration-scientifique-du-plateau-de-demerara-au-large-de-la-guyane

https://www-iuem.univ-brest.fr/lgo/fr/home-alaune/la-campagne-margats

http://www.gm.univ-montp2.fr/spip.php?article2636&lang=fr

References of International Seminar Communications

C. Basile, L. Loncke, W.R. Roest, D. Graindorge, F. Klingelhoefer, A. Heuret. Initiation of transform continental margins: strain partitioning, lithosphere weakening, and the relationships between marginal plateaus, mantle plumes and transform margins. Tranform Margins Workshop, 18-20 May, 2020, Smolenice, Slovakia (invited talk - reported)

D. Graindorge, L. Loncke, W.R. Roest, C. Basile, A.S. Fanget, C. Tallobre. The Demerara case study, from a volcanic margin to a Transform Marginal Plateau, associated sedimentary basins and the importance of contourites. Tranform Margins Workshop, 18-20 May, 2020, Smolenice, Slovakia (invited talk - reported)

L. Loncke, W.R. Roest, C. Basile, AS Fanget, C. Tallobre. Polyphased sedimentary basins and the importance of contourites along transform marginal plateaus - Examples from the Demerara case study. Tranform Margins Workshop, 18-20 May, 2020, Smolenice, Slovakia (invited talk - reported)

T. Museur, D. Graindorge, F. Klingelhoefer, W.R. Roest, C. Basile, L. Loncke, F. Sapin, Conjunction between diachronic volcanic processes and transform margin leads to the unusual structure of the Demerara transform marginal plateau and its three different margins, EGU2020-22080, Session TS6.4

F. Klingelhoefer, W. R. Roest, M. Henriquel, D. Graindorge, L. Loncke, P. Schnurle, C. Basile, A.-S. Fanget, T. Museur, C. Tallobre and X. Durrieu De Madron. Using deep sounding seismic data to image water mass - sedimentation interaction at the Demerara plateau (Surinam and French Guyana), American Geophysical Union, Fall Meeting 2019, abstract #OS32A-04

Heuret, A., Loncke, L., Roest, W., Basile, C., Graindorge, D., Poetisi, E. Structure, evolution and magmatic origin of the Demerara marginal plateau as revealed by multidisciplinary oceanographic exploration, Tectonics and Metallogenesis of NE South AmericaSAXI Conference, Paramaribo (Suriname), February 19-20th, 2019

L. Loncke, W. R Roest, F. Klingelhoefer, C. Basile, D. Graindorge, A. Heuret, B. Marcaillou, T. Museur, A.-S. Fanget and M. Mercier de Lépinay. Transform Marginal Plateaus, American Geophysical Union, Fall Meeting 2019, abstract #T32B-06

T. Museur, D. Graindorge, F. Klingelhoefer, W. R. Roest, C. Basile, L. Loncke and F. Sapin. Two distinct phases of rifting revealed from the deep structure of the Demerara plateau, American Geophysical Union, Fall Meeting 2019, abstract #T33G-0443

T. Museur, F. Klingelhoefer, W. Roest, D. Graindorge, S. Laouenan, M. Fabre, C. Basile and L. Loncke. Tectonic history and deep structure of the Demerara plateau from combined wide-angle and reflection seismic data, 50 Years of Plate Tectonics: Then, Now and Beyond, Collège de France Paris, 2018 (poster)

David Graindorge, Roest Walter, Frauke Klingelhoefer, Lies Loncke, Christophe Basile, Ewald Poetisi, Jacques Deverchère, Jean Frédéric Lebrun, Arnauld Heuret, Julie Perrot, Ronan Apprioual, Jacques Crozon, Maud Fabre, Philippe Fernagu, Pierre Guyavarch, and Christophe Prunier : Investigating the deep internal structure and the heterogeneous margins of the enigmatic Demerara plateau using deep penetrating seismic methods: first results of the MARGATS cruise, EGU General Assembly, May 2017.

David Graindorge, Thomas Museur, Walter R Roest, Frauke Klingelhoefer, Lies Loncke, Christophe Basile, Ewald Poetisi, Jacques Deverchere, Arnauld Heuret, Lebrun Jean-Frederic and Julie Perrot : MARGATS cruise: investigation of the deep internal structure and the heterogeneous margins of the Demerara plateau reveals a polyphased volcanic history, AGU Fall meeting 2017, New Orleans, T54B-04

Frauke Klingelhoefer, Thomas Museur, Walter R Roest, David Graindorge, Francois Chauvet, Lies Loncke, Christophe Basile, Ewald Poetisi, Jacques Deverchere, Jean-Frédéric Lebrun, Julie Perrot and Arnauld Heuret : Tectonic History and Deep Structure of the Demerara Plateau from Combined Wide-Angle and Reflection Seismic Data and Plate Kinematic Reconstructions, AGU Fall meeting 2017, New Orleans. T51C-1238

Lies Loncke, Christophe Basile, Walter Roest, David Graindorge, Marion Mercier de Lépinay, Frauke Klinghelhoefer, Arnauld Heuret, France Pattier, Cedric Tallobre, Jean-Frédéric Lebrun, Ewald Poetisi, Benoît Loubrieu, and plus IGUANES, DRADEM, MARGATS scientific parties : Multidisciplinary scientific program of investigation of the structure and evolution of the Demerara marginal plateau, EGU General Assembly, Vienna, May 2017.

C. Basile, D. Graindorge, W. Roest, F. Klingelhoefer, L. Loncke, I. Girault, J.L. Paquette, A. Agranier, Ar. Heuret, Where was the CAMP hotspot, and how it controlled the opening of the Central and Equatorial Atlantic oceans around the Demerara plateau, AAPG, GTW Guyana 2017: Deepwater Exploration of the Columbus & Guiana Basins, 7-8 November l Georgetown (oral)

C. Basile, I. Girault, A. Heuret, L. Loncke, E. Poetisi, D. Graindorge, J. Deverchère, F. Klingelhoefer, J.F. Lebrun, J. Perrot, W. Roest. Morphology and lithology of the continental slope north of the Demerara marginal plateau: results from the DRADEM cruise, EGU Vienna 2017, Vol 19, EGU2017-8107

D. Graindorge, Roest W., F. Klingelhoefer, L. Loncke, C. Basile, E. Poetisi, J. Deverchère, J.F. Lebrun, A. Heuret, J. Perrot, R. Apprioual, J. Crozon, M. Fabre, P. Fernagu, P. Guyavarch, C. Prunier, Investigating the deep internal structure and the heterogeneous margins of the enigmatic Demerara plateau using deep penetrating seismic methods: first results of the MARGATS cruise, EGU Vienna 2017, Vol 19, EGU2017-8872 (poster)

D. Graindorge, T. Museur, W. Roest, F. Klingelhoefer, L. Loncke, C. Basile, E. Poetisi, J. Deverchère, J.F. Lebrun, A. Heuret, J. Perrot, R. Apprioual, J. Crozon, M. Fabre, P. Fernagu, P. Guyavarch, and C. Prunier, The enigmatic deep structure and margins of the Demerara plateau: the MARGATS seismic cruise reveals a complex and polyphased magmatic history, American Geophysical Union, Fall Meeting 2017, abstract #T54B-04

D. Graindorge, W. Roest and MARGATS scientific party, The enigmatic deep structure and margins of the Demerara plateau: the MARGATS cruise seismic data together with dregdges, kinematic reconstructions and magnetic data reveal a complex and polyphased magmatic history, AAPG, GTW Guyana 2017: Deepwater Exploration of the Columbus & Guiana Basins, 7-8 November l Georgetown (poster)

F. Klingelhoefer, T. Museur, W.R. Roest, D. Graindorge, F. Chauvet, L. Loncke, C. Basile, E. Poetisi, J. Deverchère, J.F. Lebrun, A. Heuret, J. Perrot, Tectonic history and deep structure of the Demerara plateau from combined wide-angle and reflection seismic data and plate kinematic reconstructions, American Geophysical Union, Fall Meeting 2017 (poster), abstract #T51C-0473

Loncke L., Basile C., Roest W., Graindorge D., Mercier de Lépinay M, Klinghelhoefer F., Heuret A., Pattier F., Tallobre C., Lebrun JF., Poetisi E., Loubrieu B. and the IGUANES, DRADEM, and MARGATS scientific parties, Multidisciplinary scientific program of investigation of the structure and evolution of the Demerara marginal plateau, EGU Vienna 2017, Vol 19, EGU2017-7865 (oral)

Roest W., B Loubrieu, L. Loncke, C. Basile, D. Graindorge and Guyaplac Shipboard Party, 2017. French Extended Continental Shelf Mapping: example of new continental margin understanding offshore French Guiana. EGU Vienna 2017, Vol 19, EGU2017-6754 (poster)

W. Roest, B. Loubrieu, L. Loncke, C. Basile, D. Graindorge, Guyaplac Shipboard Party. French Extended Continental Shelf Mapping: example of new continental margin understanding offshore French Guiana, EGU Vienna 2017, Vol 19, EGU2017-6754

References of National Seminar Communications

D. Graindorge, W. Roest et l'équipe MARGATS, La structure profonde et les marges énigmatiques du plateau de Demerara : les données sismiques de la campagne MARGATS complétées par des dragages, des reconstructions cinématique et des données magnétiques, révèlent une histoire magmatiques complexe et polyphasée, Workshop Marginal Plateaus, Grenoble (France), November 28-29th, 2017

DEA or MASTER 2 using campaign data

Costard Vincent, Structure profonde du plateau de Demerara à partir des données sismiques basse fréquence. Ifremer LAD, Laboratoire Géosciences Océan (UBO / IUEM / UBL), Master 1 Géosciences Océan, 06/2020

Michaël Henriquel, Traitement et interprétation des données sismiques réflexion du profil MAR007, Stage école d'ingénieur : 2019, (EOST, Strassbourg)

Laouenan Sonia, Traitement de données sismique multitrace : plateau de Demerara, Laboratoire Géosciences Océan (UBO / IUEM / UBL), Master 1 Géosciences Océan, 06/2018

Museur Thomas, Caractérisation de la structure crustale du plateau marginal de Demerara (marge Guyane-Surinam). Exploitation des données sismiques grand-angle de la campagne Margats, Laboratoire Géosciences Océan (UBO / IUEM / UBL), Master 2 Géosciences Océan, 12/06/2017

Thesis using campaign data

Panetier Aurélie (2023). Shipborne Global Navigation Satellite Systems for Offshore Atmospheric Water Vapor Monitoring. PhD Thesis, ENSTA Bretagne.


Museur Thomas (2020). Caractérisation de la strucutre profonde du plateau sous-marin de Démérara (Marge Guyane-Suriname) / Characterization of the deep structure of the Demerara Plateau, off French Guyana and Surinam. PhD Thesis, Université de Bretagne Occidentale.


2017 sept. - 2020 (nov.) : Museur Thomas -Structure profonde du plateau de Demerara au large de la Guyane et Suriname -Co-encadrement 50% Graindorge, Walter Roest (Ifremer), Dir. Frauke Klingelhoefer (Ifremer) -1 publication révisions mineures Minor revisions to Tectonophysics (TECTO14134) : T. Museur, D. Graindorge, F. Klingelhoefer, W.R. Roest, C. Basile, L. Loncke, F., Sapin. Deep structure of the Demerara plateau: from a volcanic margin to a Transform Marginal Plateau