Quaternary ice sheet limits on the continental shelf west of Ireland
International audience Recent investigations have shown that the continental shelf west of Ireland contains sedimentary landforms recording occupation by grounded, lobate ice sheet margins that extended from Ireland during at least the last glacial cycle. This paper reviews some of the offshore evid...
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ftunivcotedazur:oai:HAL:hal-02363169v1 2023-10-09T21:52:23+02:00 Quaternary ice sheet limits on the continental shelf west of Ireland Mccarron, Stephen Saqab, Mudasar Craven, Kieran Praeg, D Thebaudeau, Benjamin Monteys, Xavier Department of Geography Maynooth National University of Ireland Maynooth (Maynooth University) University College Dublin Dublin (UCD) Geological Survey of Ireland (GSI) Géoazur (GEOAZUR 7329) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Sud ) Joyce Country and Western Lakes Geopark European Project: 656821,H2020,H2020-MSCA-IF-2014,SEAGAS(2016) Dublin, Iceland 2019-07-25 https://hal.science/hal-02363169 en eng HAL CCSD info:eu-repo/grantAgreement//656821/EU/Multi-disciplinary Comparison of Fluid Venting from Gas Hydrate Systems on the Mediterranean and Brazilian Continental Margins over Glacial-Interglacial Timescales/SEAGAS hal-02363169 https://hal.science/hal-02363169 INQUA 2019 - 20th Congress of the International Union for Quaternary Research https://hal.science/hal-02363169 INQUA 2019 - 20th Congress of the International Union for Quaternary Research, Jul 2019, Dublin, Iceland. , pp.abstract P-4001 http://www.inqua2019.org/ [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy info:eu-repo/semantics/conferenceObject Conference poster 2019 ftunivcotedazur 2023-09-12T23:26:08Z International audience Recent investigations have shown that the continental shelf west of Ireland contains sedimentary landforms recording occupation by grounded, lobate ice sheet margins that extended from Ireland during at least the last glacial cycle. This paper reviews some of the offshore evidence of past glacial events available from high-resolution bathymetry, 2D/3D seismic datasets (Fig. 1), and shallow sediment cores providing information on the sedimentology, rheology and age of glacigenic stratigraphic units. The available data suggest that the continental shelf has been repeatedly occupied by tidewater ice margins characterised by ice streaming, possibly since the mid-Pleistocene transition. The offshore record provides as yet incomplete information on the extent and timing of glaciation from multiple centres of dispersal in Ireland. The dynamics of former ice sheets in Ireland, downwind of the climatically important central North Atlantic region, makes them of wider interest in the study of partially marine based ice sheet-ocean interactions in rapidly changing environments. Conference Object Ice Sheet Iceland North Atlantic HAL Université Côte d'Azur |
institution |
Open Polar |
collection |
HAL Université Côte d'Azur |
op_collection_id |
ftunivcotedazur |
language |
English |
topic |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy |
spellingShingle |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy Mccarron, Stephen Saqab, Mudasar Craven, Kieran Praeg, D Thebaudeau, Benjamin Monteys, Xavier Quaternary ice sheet limits on the continental shelf west of Ireland |
topic_facet |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy |
description |
International audience Recent investigations have shown that the continental shelf west of Ireland contains sedimentary landforms recording occupation by grounded, lobate ice sheet margins that extended from Ireland during at least the last glacial cycle. This paper reviews some of the offshore evidence of past glacial events available from high-resolution bathymetry, 2D/3D seismic datasets (Fig. 1), and shallow sediment cores providing information on the sedimentology, rheology and age of glacigenic stratigraphic units. The available data suggest that the continental shelf has been repeatedly occupied by tidewater ice margins characterised by ice streaming, possibly since the mid-Pleistocene transition. The offshore record provides as yet incomplete information on the extent and timing of glaciation from multiple centres of dispersal in Ireland. The dynamics of former ice sheets in Ireland, downwind of the climatically important central North Atlantic region, makes them of wider interest in the study of partially marine based ice sheet-ocean interactions in rapidly changing environments. |
author2 |
Department of Geography Maynooth National University of Ireland Maynooth (Maynooth University) University College Dublin Dublin (UCD) Geological Survey of Ireland (GSI) Géoazur (GEOAZUR 7329) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Sud ) Joyce Country and Western Lakes Geopark European Project: 656821,H2020,H2020-MSCA-IF-2014,SEAGAS(2016) |
format |
Conference Object |
author |
Mccarron, Stephen Saqab, Mudasar Craven, Kieran Praeg, D Thebaudeau, Benjamin Monteys, Xavier |
author_facet |
Mccarron, Stephen Saqab, Mudasar Craven, Kieran Praeg, D Thebaudeau, Benjamin Monteys, Xavier |
author_sort |
Mccarron, Stephen |
title |
Quaternary ice sheet limits on the continental shelf west of Ireland |
title_short |
Quaternary ice sheet limits on the continental shelf west of Ireland |
title_full |
Quaternary ice sheet limits on the continental shelf west of Ireland |
title_fullStr |
Quaternary ice sheet limits on the continental shelf west of Ireland |
title_full_unstemmed |
Quaternary ice sheet limits on the continental shelf west of Ireland |
title_sort |
quaternary ice sheet limits on the continental shelf west of ireland |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.science/hal-02363169 |
op_coverage |
Dublin, Iceland |
genre |
Ice Sheet Iceland North Atlantic |
genre_facet |
Ice Sheet Iceland North Atlantic |
op_source |
INQUA 2019 - 20th Congress of the International Union for Quaternary Research https://hal.science/hal-02363169 INQUA 2019 - 20th Congress of the International Union for Quaternary Research, Jul 2019, Dublin, Iceland. , pp.abstract P-4001 http://www.inqua2019.org/ |
op_relation |
info:eu-repo/grantAgreement//656821/EU/Multi-disciplinary Comparison of Fluid Venting from Gas Hydrate Systems on the Mediterranean and Brazilian Continental Margins over Glacial-Interglacial Timescales/SEAGAS hal-02363169 https://hal.science/hal-02363169 |
_version_ |
1779315545097633792 |