Timing, forcing and onshore-offshore correlations on the western margin of the British-Irish Ice Sheet

Kevin Schiele, S. Benetti, P Dunlop, Haflidi Haflidason, Edward L King, Colm O'Cofaigh, Hans Petter Sejrup, A.J. Wheeler, Peter Wilson

Research output: Contribution to conferenceAbstract

Abstract

Ice sheets grow and decay in response to climate change. When disappeared they leave a rich geological record of their former behaviour and extent (e.g. sediments, drumlins, moraines). Although the British-Irish Ice Sheet (BIIS) has been investigated for over 100 years, little is known about its offshore ice extent. However, evidence for grounded ice masses have been discovered recently on the western Irish shelf. Understanding the dynamics of the last BIIS can provide vital information on long-term climate change and allows predicting the behaviour of Greenland and Antarctic ice sheets in the future.
The aim of this study is (1) to map the spatial extent of glacigenic deposits on the shelf (using seismic data), (2) to identify glacial processes occurring during ice sheet maximum extent and retreat (by sediment cores and seismics), (3) to assess the timing of the ice sheet retreat (by 14C and CN dating) and (4) to reconstruct the pattern of ice sheet retreat from offshore to onshore.
The results of this multi-proxy approach and their implications will be of great value for future detailed reconstructions of the dynamics of the BIIS during the Quaternary period and in greater detail during the last glacial period.

Conference

ConferenceIrish Quaternary Association
Abbreviated titleIQUA
CountryUnited Kingdom
CityColeraine
Period9/04/169/04/16

Fingerprint

ice sheet
ice
drumlin
climate change
geological record
Last Glacial
sediment core
seismic data
sediment

Keywords

  • British Irish Ice Sheet
  • Continental shelf
  • cosmogenic dating

Cite this

Schiele, K., Benetti, S., Dunlop, P., Haflidason, H., King, E. L., O'Cofaigh, C., ... Wilson, P. (2016). Timing, forcing and onshore-offshore correlations on the western margin of the British-Irish Ice Sheet. Abstract from Irish Quaternary Association, Coleraine, United Kingdom.
Schiele, Kevin ; Benetti, S. ; Dunlop, P ; Haflidason, Haflidi ; King, Edward L ; O'Cofaigh, Colm ; Sejrup, Hans Petter ; Wheeler, A.J. ; Wilson, Peter. / Timing, forcing and onshore-offshore correlations on the western margin of the British-Irish Ice Sheet. Abstract from Irish Quaternary Association, Coleraine, United Kingdom.1 p.
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title = "Timing, forcing and onshore-offshore correlations on the western margin of the British-Irish Ice Sheet",
abstract = "Ice sheets grow and decay in response to climate change. When disappeared they leave a rich geological record of their former behaviour and extent (e.g. sediments, drumlins, moraines). Although the British-Irish Ice Sheet (BIIS) has been investigated for over 100 years, little is known about its offshore ice extent. However, evidence for grounded ice masses have been discovered recently on the western Irish shelf. Understanding the dynamics of the last BIIS can provide vital information on long-term climate change and allows predicting the behaviour of Greenland and Antarctic ice sheets in the future.The aim of this study is (1) to map the spatial extent of glacigenic deposits on the shelf (using seismic data), (2) to identify glacial processes occurring during ice sheet maximum extent and retreat (by sediment cores and seismics), (3) to assess the timing of the ice sheet retreat (by 14C and CN dating) and (4) to reconstruct the pattern of ice sheet retreat from offshore to onshore.The results of this multi-proxy approach and their implications will be of great value for future detailed reconstructions of the dynamics of the BIIS during the Quaternary period and in greater detail during the last glacial period.",
keywords = "British Irish Ice Sheet, Continental shelf, cosmogenic dating",
author = "Kevin Schiele and S. Benetti and P Dunlop and Haflidi Haflidason and King, {Edward L} and Colm O'Cofaigh and Sejrup, {Hans Petter} and A.J. Wheeler and Peter Wilson",
year = "2016",
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note = "Irish Quaternary Association : Spring Meeting, IQUA ; Conference date: 09-04-2016 Through 09-04-2016",

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Schiele, K, Benetti, S, Dunlop, P, Haflidason, H, King, EL, O'Cofaigh, C, Sejrup, HP, Wheeler, AJ & Wilson, P 2016, 'Timing, forcing and onshore-offshore correlations on the western margin of the British-Irish Ice Sheet' Irish Quaternary Association, Coleraine, United Kingdom, 9/04/16 - 9/04/16, .

Timing, forcing and onshore-offshore correlations on the western margin of the British-Irish Ice Sheet. / Schiele, Kevin; Benetti, S.; Dunlop, P; Haflidason, Haflidi; King, Edward L; O'Cofaigh, Colm; Sejrup, Hans Petter; Wheeler, A.J.; Wilson, Peter.

2016. Abstract from Irish Quaternary Association, Coleraine, United Kingdom.

Research output: Contribution to conferenceAbstract

TY - CONF

T1 - Timing, forcing and onshore-offshore correlations on the western margin of the British-Irish Ice Sheet

AU - Schiele, Kevin

AU - Benetti, S.

AU - Dunlop, P

AU - Haflidason, Haflidi

AU - King, Edward L

AU - O'Cofaigh, Colm

AU - Sejrup, Hans Petter

AU - Wheeler, A.J.

AU - Wilson, Peter

PY - 2016/4/9

Y1 - 2016/4/9

N2 - Ice sheets grow and decay in response to climate change. When disappeared they leave a rich geological record of their former behaviour and extent (e.g. sediments, drumlins, moraines). Although the British-Irish Ice Sheet (BIIS) has been investigated for over 100 years, little is known about its offshore ice extent. However, evidence for grounded ice masses have been discovered recently on the western Irish shelf. Understanding the dynamics of the last BIIS can provide vital information on long-term climate change and allows predicting the behaviour of Greenland and Antarctic ice sheets in the future.The aim of this study is (1) to map the spatial extent of glacigenic deposits on the shelf (using seismic data), (2) to identify glacial processes occurring during ice sheet maximum extent and retreat (by sediment cores and seismics), (3) to assess the timing of the ice sheet retreat (by 14C and CN dating) and (4) to reconstruct the pattern of ice sheet retreat from offshore to onshore.The results of this multi-proxy approach and their implications will be of great value for future detailed reconstructions of the dynamics of the BIIS during the Quaternary period and in greater detail during the last glacial period.

AB - Ice sheets grow and decay in response to climate change. When disappeared they leave a rich geological record of their former behaviour and extent (e.g. sediments, drumlins, moraines). Although the British-Irish Ice Sheet (BIIS) has been investigated for over 100 years, little is known about its offshore ice extent. However, evidence for grounded ice masses have been discovered recently on the western Irish shelf. Understanding the dynamics of the last BIIS can provide vital information on long-term climate change and allows predicting the behaviour of Greenland and Antarctic ice sheets in the future.The aim of this study is (1) to map the spatial extent of glacigenic deposits on the shelf (using seismic data), (2) to identify glacial processes occurring during ice sheet maximum extent and retreat (by sediment cores and seismics), (3) to assess the timing of the ice sheet retreat (by 14C and CN dating) and (4) to reconstruct the pattern of ice sheet retreat from offshore to onshore.The results of this multi-proxy approach and their implications will be of great value for future detailed reconstructions of the dynamics of the BIIS during the Quaternary period and in greater detail during the last glacial period.

KW - British Irish Ice Sheet

KW - Continental shelf

KW - cosmogenic dating

UR - http://iqua.ie/iqua-2016-spring-meeting/

M3 - Abstract

ER -

Schiele K, Benetti S, Dunlop P, Haflidason H, King EL, O'Cofaigh C et al. Timing, forcing and onshore-offshore correlations on the western margin of the British-Irish Ice Sheet. 2016. Abstract from Irish Quaternary Association, Coleraine, United Kingdom.