Sedimentary archives of the French Atlantic coast (inner Bay of Vilaine, south Brittany): Depositional history and late Holocene climatic and environmental signals
International audience The late Holocene is of particular interest to our understanding of the evolution of coastal sedimentary systems because this period encompasses warmer and cooler periods, and rising sea level in northern Europe. Based on an approach combining AMS 14C, sedimentological and roc...
Published in: | Continental Shelf Research |
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Main Authors: | , , , , , , , |
Other Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2010
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Subjects: | |
Online Access: | https://hal.science/hal-00491103 https://doi.org/10.1016/j.csr.2010.04.004 |
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ftunivrennes1hal:oai:HAL:hal-00491103v1 |
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openpolar |
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Open Polar |
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Université de Rennes 1: Publications scientifiques (HAL) |
op_collection_id |
ftunivrennes1hal |
language |
English |
topic |
Sedimentary infilling Holocene transgression Climatic change North Atlantic Oscillation Medieval Warm Period Human activity [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
Sedimentary infilling Holocene transgression Climatic change North Atlantic Oscillation Medieval Warm Period Human activity [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDE.MCG]Environmental Sciences/Global Changes Sorrel, P. Tessier, Bernadette Demory, F. Baltzer, Agnès Bouaouina, F. Proust, J.-N. Menier, David, D. Traini, C. Sedimentary archives of the French Atlantic coast (inner Bay of Vilaine, south Brittany): Depositional history and late Holocene climatic and environmental signals |
topic_facet |
Sedimentary infilling Holocene transgression Climatic change North Atlantic Oscillation Medieval Warm Period Human activity [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDE.MCG]Environmental Sciences/Global Changes |
description |
International audience The late Holocene is of particular interest to our understanding of the evolution of coastal sedimentary systems because this period encompasses warmer and cooler periods, and rising sea level in northern Europe. Based on an approach combining AMS 14C, sedimentological and rock magnetic analyses on sediment cores complemented with seismic data collected in the macrotidal Bay of Vilaine (south Brittany), we document the depositional history of the inner bay coeval to the mid- to late-Holocene transgression in south Brittany. Correlation between sedimentary archives revealed the main sedimentary infilling phases during the last 6000 years. Four units (U1–U4) are recognized in the coastal sediment wedge of the system, corresponding to the stepwise marine invasion of the bay. We show that (1) marine inundation, due to the steep morphology of the bedrock, is diachronous between distal and proximal records. A time lag of 1000 years is inferred over a distance of less than 5 km; (2) in the outer areas, the sedimentation has been condensed since 3000 years; (3) proximal estuarine archives offer the best record of sedimentary processes covering the last 2000 years, including the Medieval Warm Period (MWP). Correlations in proximal records in the Bay of Vilaine assess the connection between coastal sedimentary dynamics, climatic conditions and anthropogenic activities during the MWP. We match the preservation of clay deposits to increased river-borne suspended matter transported to the estuary probably as a result of accelerated land-use development (higher soil erosion) in the catchment area between ca. 880 and 1050 AD. Because the preservation of estuarine sedimentary successions is favoured when coastal wave sediment reworking is minimal, it is proposed that the prevailing climatic regime in south Brittany during the MWP likely resembled to that of the preferred negative phase of the North Atlantic Oscillation (NAO). Our data are fairly consistent with other late Holocene records from northern ... |
author2 |
PaleoEnvironnements et PaleobioSphere (PEPS) Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Morphodynamique Continentale et Côtière (M2C) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rouen Normandie (UNIROUEN) Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS) Rock Magnetic Analyses (R.M.A.), Géosciences Rennes (GR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre Armoricain de Recherches en Environnement-Centre National de la Recherche Scientifique (CNRS) Institut de Géoarchitecture Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Institut Brestois des Sciences de l'Homme et de la Société (IBSHS) Université de Brest (UBO)-Université de Brest (UBO) |
format |
Article in Journal/Newspaper |
author |
Sorrel, P. Tessier, Bernadette Demory, F. Baltzer, Agnès Bouaouina, F. Proust, J.-N. Menier, David, D. Traini, C. |
author_facet |
Sorrel, P. Tessier, Bernadette Demory, F. Baltzer, Agnès Bouaouina, F. Proust, J.-N. Menier, David, D. Traini, C. |
author_sort |
Sorrel, P. |
title |
Sedimentary archives of the French Atlantic coast (inner Bay of Vilaine, south Brittany): Depositional history and late Holocene climatic and environmental signals |
title_short |
Sedimentary archives of the French Atlantic coast (inner Bay of Vilaine, south Brittany): Depositional history and late Holocene climatic and environmental signals |
title_full |
Sedimentary archives of the French Atlantic coast (inner Bay of Vilaine, south Brittany): Depositional history and late Holocene climatic and environmental signals |
title_fullStr |
Sedimentary archives of the French Atlantic coast (inner Bay of Vilaine, south Brittany): Depositional history and late Holocene climatic and environmental signals |
title_full_unstemmed |
Sedimentary archives of the French Atlantic coast (inner Bay of Vilaine, south Brittany): Depositional history and late Holocene climatic and environmental signals |
title_sort |
sedimentary archives of the french atlantic coast (inner bay of vilaine, south brittany): depositional history and late holocene climatic and environmental signals |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://hal.science/hal-00491103 https://doi.org/10.1016/j.csr.2010.04.004 |
long_lat |
ENVELOPE(-37.967,-37.967,-54.017,-54.017) |
geographic |
Inner Bay |
geographic_facet |
Inner Bay |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
ISSN: 0278-4343 EISSN: 1873-6955 Continental Shelf Research https://hal.science/hal-00491103 Continental Shelf Research, 2010, 30 (10-11), pp.1250-1266. ⟨10.1016/j.csr.2010.04.004⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.csr.2010.04.004 hal-00491103 https://hal.science/hal-00491103 doi:10.1016/j.csr.2010.04.004 |
op_doi |
https://doi.org/10.1016/j.csr.2010.04.004 |
container_title |
Continental Shelf Research |
container_volume |
30 |
container_issue |
10-11 |
container_start_page |
1250 |
op_container_end_page |
1266 |
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1796314228446986240 |
spelling |
ftunivrennes1hal:oai:HAL:hal-00491103v1 2024-04-14T08:15:47+00:00 Sedimentary archives of the French Atlantic coast (inner Bay of Vilaine, south Brittany): Depositional history and late Holocene climatic and environmental signals Sorrel, P. Tessier, Bernadette Demory, F. Baltzer, Agnès Bouaouina, F. Proust, J.-N. Menier, David, D. Traini, C. PaleoEnvironnements et PaleobioSphere (PEPS) Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Morphodynamique Continentale et Côtière (M2C) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rouen Normandie (UNIROUEN) Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS) Rock Magnetic Analyses (R.M.A.), Géosciences Rennes (GR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre Armoricain de Recherches en Environnement-Centre National de la Recherche Scientifique (CNRS) Institut de Géoarchitecture Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Institut Brestois des Sciences de l'Homme et de la Société (IBSHS) Université de Brest (UBO)-Université de Brest (UBO) 2010-06-15 https://hal.science/hal-00491103 https://doi.org/10.1016/j.csr.2010.04.004 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.csr.2010.04.004 hal-00491103 https://hal.science/hal-00491103 doi:10.1016/j.csr.2010.04.004 ISSN: 0278-4343 EISSN: 1873-6955 Continental Shelf Research https://hal.science/hal-00491103 Continental Shelf Research, 2010, 30 (10-11), pp.1250-1266. ⟨10.1016/j.csr.2010.04.004⟩ Sedimentary infilling Holocene transgression Climatic change North Atlantic Oscillation Medieval Warm Period Human activity [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2010 ftunivrennes1hal https://doi.org/10.1016/j.csr.2010.04.004 2024-03-21T16:10:52Z International audience The late Holocene is of particular interest to our understanding of the evolution of coastal sedimentary systems because this period encompasses warmer and cooler periods, and rising sea level in northern Europe. Based on an approach combining AMS 14C, sedimentological and rock magnetic analyses on sediment cores complemented with seismic data collected in the macrotidal Bay of Vilaine (south Brittany), we document the depositional history of the inner bay coeval to the mid- to late-Holocene transgression in south Brittany. Correlation between sedimentary archives revealed the main sedimentary infilling phases during the last 6000 years. Four units (U1–U4) are recognized in the coastal sediment wedge of the system, corresponding to the stepwise marine invasion of the bay. We show that (1) marine inundation, due to the steep morphology of the bedrock, is diachronous between distal and proximal records. A time lag of 1000 years is inferred over a distance of less than 5 km; (2) in the outer areas, the sedimentation has been condensed since 3000 years; (3) proximal estuarine archives offer the best record of sedimentary processes covering the last 2000 years, including the Medieval Warm Period (MWP). Correlations in proximal records in the Bay of Vilaine assess the connection between coastal sedimentary dynamics, climatic conditions and anthropogenic activities during the MWP. We match the preservation of clay deposits to increased river-borne suspended matter transported to the estuary probably as a result of accelerated land-use development (higher soil erosion) in the catchment area between ca. 880 and 1050 AD. Because the preservation of estuarine sedimentary successions is favoured when coastal wave sediment reworking is minimal, it is proposed that the prevailing climatic regime in south Brittany during the MWP likely resembled to that of the preferred negative phase of the North Atlantic Oscillation (NAO). Our data are fairly consistent with other late Holocene records from northern ... Article in Journal/Newspaper North Atlantic North Atlantic oscillation Université de Rennes 1: Publications scientifiques (HAL) Inner Bay ENVELOPE(-37.967,-37.967,-54.017,-54.017) Continental Shelf Research 30 10-11 1250 1266 |