A new midshelf record in the northern Bay of Biscay (NE Atlantic, CBT-CS11 core): Sedimentological, geochemical and palynological data over the last 7 kyrs

Aurélie Penaud,Axelle Ganne,Pierre-Olivier Coste,Maïwenn Herlédan,Matthieu Durand,Meryem Mojtahid,Jean Nizou,Samuel Toucanne

doi:10.1016/j.dib.2020.105323

Abstract

The high-time resolution (∼70 years in average) multi-proxy analysis conducted on the mid-shelf core CBT-CS11 (47°46.429′N; 4°25.308′W; 73 m depth; 3.96 m long; NW France, S Brittany) revealed the complexity of the palaeohydrological and palaeoclimatic signals recorded over the last 7 kyrs in the recently published paper: “Oceanic versus continental influences over the last 7 kyrs from a midshelf record in the northern Bay of Biscay (NE Atlantic)” [1]. This study presents the whole CBT-CS11 dataset discussed in [1] including sedimentological (XRF and grain-size (total from [1] and CaCO3-free from [2]) analyses), geochemical (oxygen and carbon stable isotopes on two different benthic foraminiferal species: Ammonia falsobeccarii from [1] and Cibicides refulgens from [2]) analyses) as well as palynological (dinoflagellate cyst and pollen assemblages from [1]) data. The present study also describes the different statistical tests from which ecological groups have been established from palynological indicators in [1].

Highlights

The high-time resolution (~70 years in average) multi-proxy analysis conducted on the mid-shelf core CBT-CS11 (4746.4290N; 425.3080W; 73 m depth; 3.96 m long; NW France, S Brittany) revealed the complexity of the palaeohydrological and palaeoclimatic signals recorded over the last 7 kyrs in the recently published paper: “Oceanic versus continental influences over the last 7 kyrs from a midshelf record in the northern Bay of Biscay (NE Atlantic)” [1]
Global and Planetary Change Land-sea information on the northern Bay of Biscay over the last 7000 years are based on palynomorphs, sedimentology and stable isotopes and related to climate and human forcings
/Methodology and data presented in this DiB paper Raw Analyzed Criteria considered for the data collection: high-time resolution (~70 years in average) multi-proxy analysis on a midshelf core for the NE Atlantic Ocean CBT-CS11 core collection: Calypso-Genavir corer was used during the CABTEX cruise (Ifremer) in June 2010 on board the R/V Pourquoi Pas? [3] CBT-CS11 core is archived at the Ifremer-Geosciences Marines, Plouzane, France

Summary

Specifications Table

Global and Planetary Change Land-sea information on the northern Bay of Biscay over the last 7000 years are based on palynomorphs, sedimentology and stable isotopes and related to climate and human forcings. 1 Excel File 5 Figures - CABTEX cruise 1 Excel File 5 Figures - CABTEX cruise Toucanne) with CBT-CSx cores: [3], followed by core opening and XRF analysis (Ifremer GM, Plouzane): J. [1] - First age model in Ref. /Methodology and data presented in this DiB paper Raw (excel file with raw data: final age model, sedimentology including grain-size and XRF analyses, stable isotopes, pollen and dinoflagellate cyst assemblages) Analyzed (multivariate analysis: Figs 3e5) Criteria considered for the data collection: high-time resolution (~70 years in average) multi-proxy analysis on a midshelf core for the NE Atlantic Ocean CBT-CS11 core collection: Calypso-Genavir corer was used during the CABTEX cruise (Ifremer) in June 2010 on board the R/V Pourquoi Pas? Any researcher wishing to compare his data with those of this study will be able to retrieve the original work files

Data description

Multivariate analyses