Sedimentological and palynological records since 10 ka BP along a proximal-distal gradient on the Armorican shelf (NW France)
International audience New findings acquired in Armorican shelf (core MD08-3204 CQ: Bay of Quiberon and core VK03-58bis: South Glénan islands) depict Holocene paleoenvironmental changes since 10 ka BP through a multi-proxy dataset including sedimentological and palynological data. First, grain-size...
Published in: | Quaternary Science Reviews |
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Main Authors: | , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2022
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Online Access: | https://inrap.hal.science/hal-04110070 https://doi.org/10.1016/j.quascirev.2022.107678 |
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ftunivbrest:oai:HAL:hal-04110070v1 |
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Université de Bretagne Occidentale: HAL |
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English |
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[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory [SDE]Environmental Sciences |
spellingShingle |
[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory [SDE]Environmental Sciences David, Ophélie Pénaud, Aurélie Vidal, Muriel Fersi, Wiem Lambert, Clément Goubert, Evelyne Herlédan, Maiwenn Stéphan, Pierre Pailler, Yvan Bourillet, Jean‐françois Baltzer, Agnès Sedimentological and palynological records since 10 ka BP along a proximal-distal gradient on the Armorican shelf (NW France) |
topic_facet |
[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory [SDE]Environmental Sciences |
description |
International audience New findings acquired in Armorican shelf (core MD08-3204 CQ: Bay of Quiberon and core VK03-58bis: South Glénan islands) depict Holocene paleoenvironmental changes since 10 ka BP through a multi-proxy dataset including sedimentological and palynological data. First, grain-size analyses and AMS-14C dates show a common sedimentary history for both study cores. The slowdown of the relative sea level (RSL) rise was accompanied by a drop of the sedimentation rates between ∼8.3 and 5.7 ka BP; the rates had been relatively higher at the onset of the Holocene. This interval led to the establishment of a shell-condensed level, identified in core VK03-58bis by the “Turritella layer” and interpreted as a marker for the Maximum Flooding Surface. Palynological data (pollen and dinoflagellate cyst assemblages) acquired in core MD08-3204 CQ argue for an amplification of the fluvial influence since 5.7 ka BP; the establishment of the Highstand System Tract (i.e., mixed marine and fluviatile influences on the platform) then accompanied the slowdown of the RSL rise rates. On the shelf, the amplification of Anthropogenic Pollen Indicators (API) has been better detected since 4.2 ka BP, due not only to the increase of human impact but also due to a stronger fluvial influence on the shelf during the Late Holocene. Palynological data, recorded on the 8.5–8.3 ka BP interval along an inshore-offshore gradient, also demonstrate the complexity of the palynological signals such as i) the fluvial influence that promotes some pollen taxa (Alnus and Corylus) from proximal areas and ii) the macro-regionalization of palynomorph sources in distal cores. In addition, the comparison of palynological tracers, including API, over the last 7 kyrs BP, with South Brittany coastal and mid-shelf sites subject to northern vs. southern Loire catchment areas, shows a major hydro-climatic effect on the reconstructed palynological signals. Strengthened subpolar gyre (SPG) dynamics, combined with recurrent positive North Atlantic ... |
author2 |
Université de Brest (UBO) Université de Bretagne Sud (UBS) Université de Lille Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 (LOG) Institut national des sciences de l'Univers (INSU - CNRS)-Université du Littoral Côte d'Opale (ULCO)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Nord ) Littoral, Environnement, Télédétection, Géomatique (LETG - Brest) Université de Brest (UBO)-Université de Rennes 2 (UR2)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Nantes Université (Nantes Univ)-Littoral, Environnement, Télédétection, Géomatique UMR 6554 (LETG) Université de Brest (UBO)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (Nantes Univ - IGARUN) Nantes Université - pôle Humanités Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Nantes Université - pôle Humanités Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (Nantes Univ - IGARUN) Nantes Université (Nantes Univ) Institut national de recherches archéologiques préventives (Inrap) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) Littoral, Environnement, Télédétection, Géomatique (LETG - Nantes ) Université de Brest (UBO)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Nantes Université (Nantes Univ)-Littoral, Environnement, Télédétection, Géomatique UMR 6554 (LETG) |
format |
Article in Journal/Newspaper |
author |
David, Ophélie Pénaud, Aurélie Vidal, Muriel Fersi, Wiem Lambert, Clément Goubert, Evelyne Herlédan, Maiwenn Stéphan, Pierre Pailler, Yvan Bourillet, Jean‐françois Baltzer, Agnès |
author_facet |
David, Ophélie Pénaud, Aurélie Vidal, Muriel Fersi, Wiem Lambert, Clément Goubert, Evelyne Herlédan, Maiwenn Stéphan, Pierre Pailler, Yvan Bourillet, Jean‐françois Baltzer, Agnès |
author_sort |
David, Ophélie |
title |
Sedimentological and palynological records since 10 ka BP along a proximal-distal gradient on the Armorican shelf (NW France) |
title_short |
Sedimentological and palynological records since 10 ka BP along a proximal-distal gradient on the Armorican shelf (NW France) |
title_full |
Sedimentological and palynological records since 10 ka BP along a proximal-distal gradient on the Armorican shelf (NW France) |
title_fullStr |
Sedimentological and palynological records since 10 ka BP along a proximal-distal gradient on the Armorican shelf (NW France) |
title_full_unstemmed |
Sedimentological and palynological records since 10 ka BP along a proximal-distal gradient on the Armorican shelf (NW France) |
title_sort |
sedimentological and palynological records since 10 ka bp along a proximal-distal gradient on the armorican shelf (nw france) |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://inrap.hal.science/hal-04110070 https://doi.org/10.1016/j.quascirev.2022.107678 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0277-3791 Quaternary Science Reviews https://inrap.hal.science/hal-04110070 Quaternary Science Reviews, 2022, 293, pp.107678. ⟨10.1016/j.quascirev.2022.107678⟩ https://www.sciencedirect.com/science/article/abs/pii/S0277379122003092 |
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info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2022.107678 hal-04110070 https://inrap.hal.science/hal-04110070 doi:10.1016/j.quascirev.2022.107678 |
op_doi |
https://doi.org/10.1016/j.quascirev.2022.107678 |
container_title |
Quaternary Science Reviews |
container_volume |
293 |
container_start_page |
107678 |
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1781703430068240384 |
spelling |
ftunivbrest:oai:HAL:hal-04110070v1 2023-11-05T03:44:10+01:00 Sedimentological and palynological records since 10 ka BP along a proximal-distal gradient on the Armorican shelf (NW France) David, Ophélie Pénaud, Aurélie Vidal, Muriel Fersi, Wiem Lambert, Clément Goubert, Evelyne Herlédan, Maiwenn Stéphan, Pierre Pailler, Yvan Bourillet, Jean‐françois Baltzer, Agnès Université de Brest (UBO) Université de Bretagne Sud (UBS) Université de Lille Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 (LOG) Institut national des sciences de l'Univers (INSU - CNRS)-Université du Littoral Côte d'Opale (ULCO)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Nord ) Littoral, Environnement, Télédétection, Géomatique (LETG - Brest) Université de Brest (UBO)-Université de Rennes 2 (UR2)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Nantes Université (Nantes Univ)-Littoral, Environnement, Télédétection, Géomatique UMR 6554 (LETG) Université de Brest (UBO)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (Nantes Univ - IGARUN) Nantes Université - pôle Humanités Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Nantes Université - pôle Humanités Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (Nantes Univ - IGARUN) Nantes Université (Nantes Univ) Institut national de recherches archéologiques préventives (Inrap) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) Littoral, Environnement, Télédétection, Géomatique (LETG - Nantes ) Université de Brest (UBO)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Nantes Université (Nantes Univ)-Littoral, Environnement, Télédétection, Géomatique UMR 6554 (LETG) 2022-10-01 https://inrap.hal.science/hal-04110070 https://doi.org/10.1016/j.quascirev.2022.107678 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2022.107678 hal-04110070 https://inrap.hal.science/hal-04110070 doi:10.1016/j.quascirev.2022.107678 ISSN: 0277-3791 Quaternary Science Reviews https://inrap.hal.science/hal-04110070 Quaternary Science Reviews, 2022, 293, pp.107678. ⟨10.1016/j.quascirev.2022.107678⟩ https://www.sciencedirect.com/science/article/abs/pii/S0277379122003092 [SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2022 ftunivbrest https://doi.org/10.1016/j.quascirev.2022.107678 2023-10-10T22:37:00Z International audience New findings acquired in Armorican shelf (core MD08-3204 CQ: Bay of Quiberon and core VK03-58bis: South Glénan islands) depict Holocene paleoenvironmental changes since 10 ka BP through a multi-proxy dataset including sedimentological and palynological data. First, grain-size analyses and AMS-14C dates show a common sedimentary history for both study cores. The slowdown of the relative sea level (RSL) rise was accompanied by a drop of the sedimentation rates between ∼8.3 and 5.7 ka BP; the rates had been relatively higher at the onset of the Holocene. This interval led to the establishment of a shell-condensed level, identified in core VK03-58bis by the “Turritella layer” and interpreted as a marker for the Maximum Flooding Surface. Palynological data (pollen and dinoflagellate cyst assemblages) acquired in core MD08-3204 CQ argue for an amplification of the fluvial influence since 5.7 ka BP; the establishment of the Highstand System Tract (i.e., mixed marine and fluviatile influences on the platform) then accompanied the slowdown of the RSL rise rates. On the shelf, the amplification of Anthropogenic Pollen Indicators (API) has been better detected since 4.2 ka BP, due not only to the increase of human impact but also due to a stronger fluvial influence on the shelf during the Late Holocene. Palynological data, recorded on the 8.5–8.3 ka BP interval along an inshore-offshore gradient, also demonstrate the complexity of the palynological signals such as i) the fluvial influence that promotes some pollen taxa (Alnus and Corylus) from proximal areas and ii) the macro-regionalization of palynomorph sources in distal cores. In addition, the comparison of palynological tracers, including API, over the last 7 kyrs BP, with South Brittany coastal and mid-shelf sites subject to northern vs. southern Loire catchment areas, shows a major hydro-climatic effect on the reconstructed palynological signals. Strengthened subpolar gyre (SPG) dynamics, combined with recurrent positive North Atlantic ... Article in Journal/Newspaper North Atlantic Université de Bretagne Occidentale: HAL Quaternary Science Reviews 293 107678 |