seanoe:109718 Eynaud Frederique Univ. Bordeaux, CNRS, Bordeaux INP, EPOC, UMR 5805, F-33600 Pessac, France 2025-11-14 ISO 19115:2003/19139 1.0 Radiocarbon datings from the West-Gironde mud patch (WGMP) cores retrieved during the JERICObent-7 cruise 2025 2025-11-14 Eynaud Frederique, Dumoulin Jean-Pascal , Deflandre Bruno (2025). Radiocarbon datings from the West-Gironde mud patch (WGMP) cores retrieved during the JERICObent-7 cruise. SEANOE. https://doi.org/10.17882/109718 This set of data documents the radiocarbon dates (n=19) obtained thanks to the accelerator mass spectrometry method (AMS) at the LMC14/ARTEMIS French national facility on the cores (Multicorer, Kullenberg) retrieved from the West-Gironde mud patch (WGMP) during the JERICObent-7 cruise (10-15 July 2019; NR Côtes de la Manche, https://doi.org/10.17600/18001022). The WGMP registers very high sedimentation rates since the last 600 years (≥ 0.3 cm/yr) and is thus of great interest for palaeoceanographic investigations. At present, this depocenter marks the mid-shelf of the temperate Bay of Biscay off major French rivers from the Aquitaine basin. The fine mud deposits of the WGMP are of 3 to 4 meters thick and lie on palimpsest levels rich in gravels and shells. They cover a V-shaped structure, oriented SW-NE, which is attributed to the incision(s) of a paleovalley in the Cenozoic substrate, mainly linked to the paleo-Gironde routing changes during past glacials/interglacials, and its potential past convergences with the paleo-rivers of the Antioche perthuis (Seudre, Charente paleovalleys?) at that times. Detailed information on each sample is presented with the 14C results obtained by the Artemis AMS facility at LMC14 laboratory (Dumoulin et al. 2017- https://doi.org/10.1017/RDC.2016.116, Beck et al. 2024- https://doi.org/10.1017/RDC.2023.23). Raw ages are indicated together with calibration calculations using the last two versions of the Calib software (http://calib.org/, Calib 7 and 8) to show the dispersion of ages linked to the updating of calibration curves (Marine13, Intcal13, Marine20, Intcal 20). The calibrated ages finally retained for publications (used in the related Seanoe document - https://doi.org/10.17882/104237 - and published in Eynaud et al., 2025 for the ST3c core, https://doi.org/10.1016/j.gloplacha.2025.105039) are those obtained with the last Calib 8.1 version. Raw 14C ages were calibrated and converted to calendar ages using the IntCal20 calibration curve with a reservoir age correction of 400 years deduced from Radionuclide analyses (137Cs and 210Pb) at the top of the studied cores (see Schmidt, 2025, https://www.seanoe.org/data/00968/107979/).  <p>This work was supported by the CNRS French INSU actions: TelluS-ARTEMIS CONTINUHHUM-2022 and TelluS-ARTEMIS PaléoVOG-2021; TelluS-Action Post-Campagnes à la mer 2021, and the LEFE- EC2CO VOG project from the national program Interface LEFE-EC2CO. The JERICObent-7 cruise (10-15 July 2019 ; NR Côtes de la Manche) was funded by the French Oceanographic Fleet. We thank the LMC14 staff (Laboratoire de Mesure du Carbone-14), ARTEMIS national facility, (LSCE (CNRS-CEA-UVSQ)-IRD-IRSN-MC) for the results obtained with the accelerator mass spectrometry method.</p> Eynaud Frederique Univ. Bordeaux, CNRS, Bordeaux INP, EPOC, UMR 5805, F-33600 Pessac, France Dumoulin Jean-Pascal Laboratoire de Mesure du Carbone 14 (LMC14), LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France Deflandre Bruno Univ. Bordeaux, CNRS, Bordeaux INP, EPOC, UMR 5805, F-33600 Pessac, France SEANOE https://www.seanoe.org/data/00985/109718/illustration.jpg Illustration of the selected materials (from the >150 µm fraction) used for radiocarbon dating. Marine cores Radiocarbon dating Bay of Biscay West-Gironde mud patch Marine geology CO2 Carbonate system ODATIS aggregation parameters and Essential Variable names 2025-07-29 geonetwork.thesaurus.external.theme.NVS.OD1 Marine geology SeaDataNet Parameter Disciplines 2025-07-29 geonetwork.thesaurus.external.parameter.NVS.P08 Analysis data Type de jeux de donnée ODATIS 2024-10-15 geonetwork.thesaurus.local.theme.type_jeux_donnee CC-BY-NC (Creative Commons - Attribution, No commercial usage) 20 YEARS OF AMS ¹⁴C DATING USING THE ARTEMIS FACILITY AT THE LMC14 NATIONAL LABORATORY: REVIEW OF SERVICE AND RESEARCH ACTIVITIES 2024 Cambridge University Press (CUP) Beck L Caffy I Delqué-Količ E Dumoulin J-P Goulas C Hain S Moreau C Perron M Setti V Sieudat M Thellier B 10.1017/rdc.2023.23 Status Report on Sample Preparation Protocols Developed at the LMC14 Laboratory, Saclay, France: From Sample Collection to ¹⁴C AMS Measurement 2017 Cambridge University Press (CUP) Dumoulin J-P Comby-Zerbino C Delqué-Količ E Moreau C Caffy I Hain S Perron M Thellier B Setti V Berthier B Beck L 10.1017/rdc.2016.116 10.1016/j.gloplacha.2025.105039 History of the sedimentary regimes of the Aquitaine margin (Bay of Biscay, France) at the outlet of its main tributaries during the last millennium: a mirror of the North Atlantic and European climates. 2025 SEANOE Eynaud Frédérique Schmidt Sabine Iratcabal Vincent Dubosq Nicolas Billy Isabelle Ther Olivier Deflandre Bruno 10.17882/104237 Depth profiles of 210Pb, 226Ra, 228Th, 137Cs and 40K in marine sediments of the West Gironde Mud Patch (Bay of Biscay) collected during the JERICObent7 cruise 2025 SEANOE Schmidt Sabine 10.17882/107979 10.17600/18001022 oceans -6.108398 -0.571289 43.524655 47.040182 XLS, XLSX https://www.seanoe.org/data/00985/109718/data/123426.xlsx WWW:DOWNLOAD-1.0-link--download Processed data Radiocarbon_dating_JB7 - 109 KB https://doi.org/10.17882/109718 WWW:LINK-1.0-http--metadata-URL DOI of the product https://www.seanoe.org/data/00985/109718/ rel-canonical Seanoe ARTEMIS national facility: Laboratoire de mesure du carbone 14 (LMC14), Saclay