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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Subjects: | |
Online Access: | https://insu.hal.science/insu-03824739 https://insu.hal.science/insu-03824739/document https://insu.hal.science/insu-03824739/file/96146.pdf https://doi.org/10.1016/j.quascirev.2022.107678 |
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ftanrparis:oai:HAL:insu-03824739v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Portail HAL-ANR (Agence Nationale de la Recherche) |
op_collection_id |
ftanrparis |
language |
English |
topic |
Fluvial discharge Holocene South Brittany Pollen Dinoflagellate cysts Paleoenvironmental changes Turritella layer Anthropogenic pollen indicators (API) [SDU]Sciences of the Universe [physics] |
spellingShingle |
Fluvial discharge Holocene South Brittany Pollen Dinoflagellate cysts Paleoenvironmental changes Turritella layer Anthropogenic pollen indicators (API) [SDU]Sciences of the Universe [physics] David, Ophélie Penaud, 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 |
Fluvial discharge Holocene South Brittany Pollen Dinoflagellate cysts Paleoenvironmental changes Turritella layer Anthropogenic pollen indicators (API) [SDU]Sciences of the Universe [physics] |
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- 14 C 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 |
Geo-Ocean (GEO-OCEAN) Université de Bretagne Sud (UBS)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) Geo-Instituut Catholic University of Leuven = Katholieke Universiteit Leuven (KU Leuven) 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)-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)-Centre National de la Recherche Scientifique (CNRS)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (Nantes Univ - IGARUN) Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ) 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)-Littoral, Environnement, Télédétection, Géomatique UMR 6554 (LETG) ANR-17-EURE-0015,ISBlue,Interdisciplinary Graduate School for the Blue planet(2017) |
format |
Article in Journal/Newspaper |
author |
David, Ophélie Penaud, Aurélie Vidal, Muriel Fersi, Wiem Lambert, Clément Goubert, Evelyne Herlédan, Maiwenn Stéphan, Pierre Pailler, Yvan Bourillet, Jean-François Baltzer, Agnès |
author_facet |
David, Ophélie Penaud, 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://insu.hal.science/insu-03824739 https://insu.hal.science/insu-03824739/document https://insu.hal.science/insu-03824739/file/96146.pdf https://doi.org/10.1016/j.quascirev.2022.107678 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0277-3791 EISSN: 1873-457X Quaternary Science Reviews https://insu.hal.science/insu-03824739 Quaternary Science Reviews, 2022, 293, ⟨10.1016/j.quascirev.2022.107678⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2022.107678 insu-03824739 https://insu.hal.science/insu-03824739 https://insu.hal.science/insu-03824739/document https://insu.hal.science/insu-03824739/file/96146.pdf BIBCODE: 2022QSRv.29307678D doi:10.1016/j.quascirev.2022.107678 |
op_rights |
info:eu-repo/semantics/OpenAccess |
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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1810464712431763456 |
spelling |
ftanrparis:oai:HAL:insu-03824739v1 2024-09-15T18:24:22+00:00 Sedimentological and palynological records since 10 ka BP along a proximal-distal gradient on the Armorican shelf (NW France) David, Ophélie Penaud, Aurélie Vidal, Muriel Fersi, Wiem Lambert, Clément Goubert, Evelyne Herlédan, Maiwenn Stéphan, Pierre Pailler, Yvan Bourillet, Jean-François Baltzer, Agnès Geo-Ocean (GEO-OCEAN) Université de Bretagne Sud (UBS)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) Geo-Instituut Catholic University of Leuven = Katholieke Universiteit Leuven (KU Leuven) 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)-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)-Centre National de la Recherche Scientifique (CNRS)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (Nantes Univ - IGARUN) Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ) 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)-Littoral, Environnement, Télédétection, Géomatique UMR 6554 (LETG) ANR-17-EURE-0015,ISBlue,Interdisciplinary Graduate School for the Blue planet(2017) 2022 https://insu.hal.science/insu-03824739 https://insu.hal.science/insu-03824739/document https://insu.hal.science/insu-03824739/file/96146.pdf 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 insu-03824739 https://insu.hal.science/insu-03824739 https://insu.hal.science/insu-03824739/document https://insu.hal.science/insu-03824739/file/96146.pdf BIBCODE: 2022QSRv.29307678D doi:10.1016/j.quascirev.2022.107678 info:eu-repo/semantics/OpenAccess ISSN: 0277-3791 EISSN: 1873-457X Quaternary Science Reviews https://insu.hal.science/insu-03824739 Quaternary Science Reviews, 2022, 293, ⟨10.1016/j.quascirev.2022.107678⟩ Fluvial discharge Holocene South Brittany Pollen Dinoflagellate cysts Paleoenvironmental changes Turritella layer Anthropogenic pollen indicators (API) [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2022 ftanrparis https://doi.org/10.1016/j.quascirev.2022.107678 2024-07-17T23:35:57Z 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- 14 C 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 Portail HAL-ANR (Agence Nationale de la Recherche) Quaternary Science Reviews 293 107678 |