Holocene formation and evolution of coastal dunes ridges, Brittany (France)

Brigitte Van Vliet-Lanoë; Jérôme Goslin; Alain Hénaff; Bernard Hallégouët; Christophe Delacourt; Erwan Le Cornec; Murielle Meurisse-Fort

doi:10.1016/j.crte.2015.01.001

Holocene formation and evolution of coastal dunes ridges, Brittany (France)

Brigitte Van Vliet-Lanoë^*, Jérôme Goslin, Alain Hénaff, Bernard Hallégouët, Christophe Delacourt, Erwan Le Cornec, Murielle Meurisse-Fort

^*Corresponding author for this work

Geology

14 Citations (Scopus)

41 Downloads (Pure)

Abstract

Holocene coastal dune formation under a continuously rising sea level (SL) is an abnormal response to increasing storm frequency. The aim of this work is to understand the coastal sedimentary budget and the present-day sand starvation, controlled by climate and man. Dating in Brittany shows that Aeolian deposition initiated from ca. 4000 cal BP, with the slowing down of the SL rise. Pre-historical dunes appeared here from ca. 3000 cal BP, without SL regression. After, further building phases recycled the same stock of sands. Historical dunes I developed from ca. 350 AD. Major storms between 900 and 1200 AD resulted in the construction of washover coastal ridges, the Historical dunes II. A part of the sand was evacuated offshore. From ca. 1350 AD, the pre-existing ridges are reworked forming the Historical dunes III, leading to rapid coastal erosion and inland drift. Holocene dunes with a rising SL constitute a temporary anomaly, mostly forced by man, soon erased by storms in Brittany.

Original language	English
Journal	Comptes Rendus - Geoscience
Volume	348
Issue number	6
Pages (from-to)	462-470
Number of pages	9
ISSN	1631-0713
DOIs	https://doi.org/10.1016/j.crte.2015.01.001
Publication status	Published - 2016

Keywords

Anthropic perturbation
Climate
Dunes
Holocene
Sand starvation

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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Holocene formation and evolution of coastal dunes ridges, Brittany (France)Final published version, 3.26 MBLicence: CC BY

Cite this

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title = "Holocene formation and evolution of coastal dunes ridges, Brittany (France)",

abstract = "Holocene coastal dune formation under a continuously rising sea level (SL) is an abnormal response to increasing storm frequency. The aim of this work is to understand the coastal sedimentary budget and the present-day sand starvation, controlled by climate and man. Dating in Brittany shows that Aeolian deposition initiated from ca. 4000 cal BP, with the slowing down of the SL rise. Pre-historical dunes appeared here from ca. 3000 cal BP, without SL regression. After, further building phases recycled the same stock of sands. Historical dunes I developed from ca. 350 AD. Major storms between 900 and 1200 AD resulted in the construction of washover coastal ridges, the Historical dunes II. A part of the sand was evacuated offshore. From ca. 1350 AD, the pre-existing ridges are reworked forming the Historical dunes III, leading to rapid coastal erosion and inland drift. Holocene dunes with a rising SL constitute a temporary anomaly, mostly forced by man, soon erased by storms in Brittany.",

keywords = "Anthropic perturbation, Climate, Dunes, Holocene, Sand starvation",

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doi = "10.1016/j.crte.2015.01.001",

language = "English",

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T1 - Holocene formation and evolution of coastal dunes ridges, Brittany (France)

AU - Van Vliet-Lanoë, Brigitte

AU - Goslin, Jérôme

AU - Hénaff, Alain

AU - Hallégouët, Bernard

AU - Delacourt, Christophe

AU - Le Cornec, Erwan

AU - Meurisse-Fort, Murielle

PY - 2016

Y1 - 2016

N2 - Holocene coastal dune formation under a continuously rising sea level (SL) is an abnormal response to increasing storm frequency. The aim of this work is to understand the coastal sedimentary budget and the present-day sand starvation, controlled by climate and man. Dating in Brittany shows that Aeolian deposition initiated from ca. 4000 cal BP, with the slowing down of the SL rise. Pre-historical dunes appeared here from ca. 3000 cal BP, without SL regression. After, further building phases recycled the same stock of sands. Historical dunes I developed from ca. 350 AD. Major storms between 900 and 1200 AD resulted in the construction of washover coastal ridges, the Historical dunes II. A part of the sand was evacuated offshore. From ca. 1350 AD, the pre-existing ridges are reworked forming the Historical dunes III, leading to rapid coastal erosion and inland drift. Holocene dunes with a rising SL constitute a temporary anomaly, mostly forced by man, soon erased by storms in Brittany.

AB - Holocene coastal dune formation under a continuously rising sea level (SL) is an abnormal response to increasing storm frequency. The aim of this work is to understand the coastal sedimentary budget and the present-day sand starvation, controlled by climate and man. Dating in Brittany shows that Aeolian deposition initiated from ca. 4000 cal BP, with the slowing down of the SL rise. Pre-historical dunes appeared here from ca. 3000 cal BP, without SL regression. After, further building phases recycled the same stock of sands. Historical dunes I developed from ca. 350 AD. Major storms between 900 and 1200 AD resulted in the construction of washover coastal ridges, the Historical dunes II. A part of the sand was evacuated offshore. From ca. 1350 AD, the pre-existing ridges are reworked forming the Historical dunes III, leading to rapid coastal erosion and inland drift. Holocene dunes with a rising SL constitute a temporary anomaly, mostly forced by man, soon erased by storms in Brittany.

KW - Anthropic perturbation

KW - Climate

KW - Dunes

KW - Holocene

KW - Sand starvation

U2 - 10.1016/j.crte.2015.01.001

DO - 10.1016/j.crte.2015.01.001

M3 - Journal article

AN - SCOPUS:84924401981

SN - 1631-0713

VL - 348

SP - 462

EP - 470

JO - Comptes Rendus Geoscience

JF - Comptes Rendus Geoscience

IS - 6

ER -

Holocene formation and evolution of coastal dunes ridges, Brittany (France)

Abstract

Keywords

UN SDGs

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