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Final deglaciation of the Malin Sea through meltwater release and calving events

View ORCID ProfileSerena Tarlati, View ORCID ProfileS. Benetti, S.L. Callard, C. Ó Cofaigh, View ORCID ProfileP. Dunlop, View ORCID ProfileA. Georgiopoulou, View ORCID ProfileR. Edwards, View ORCID ProfileK. Van Landeghem, View ORCID ProfileM. Saher, View ORCID ProfileR. Chiverrell, View ORCID ProfileD. Fabel, View ORCID ProfileS. Moreton, View ORCID ProfileS. Morgan and C.D. Clark
Scottish Journal of Geology, 56, 117-133, 6 May 2020, https://doi.org/10.1144/sjg2019-010
Serena Tarlati
1School of Geography and Environmental Sciences, Ulster University, Coleraine, UK
Roles: [Conceptualization (Lead)], [Data curation (Lead)], [Formal analysis (Lead)], [Investigation (Lead)], [Writing - Original Draft (Lead)], [Writing - Review & Editing (Lead)]
  • Find this author on Google Scholar
  • Search for this author on this site
  • ORCID record for Serena Tarlati
  • For correspondence: Tarlati-S@ulster.ac.uk
S. Benetti
1School of Geography and Environmental Sciences, Ulster University, Coleraine, UK
Roles: [Conceptualization (Supporting)], [Funding acquisition (Equal)], [Supervision (Lead)], [Writing - Review & Editing (Supporting)]
  • Find this author on Google Scholar
  • Search for this author on this site
  • ORCID record for S. Benetti
S.L. Callard
2Department of Geography, Durham University, UK
Roles: [Writing - Review & Editing (Supporting)]
  • Find this author on Google Scholar
  • Search for this author on this site
C. Ó Cofaigh
2Department of Geography, Durham University, UK
Roles: [Writing - Review & Editing (Supporting)]
  • Find this author on Google Scholar
  • Search for this author on this site
P. Dunlop
1School of Geography and Environmental Sciences, Ulster University, Coleraine, UK
Roles: [Supervision (Supporting)], [Writing - Review & Editing (Supporting)]
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  • Search for this author on this site
  • ORCID record for P. Dunlop
A. Georgiopoulou
3School of Environment and Technology, University of Brighton, UK
Roles: [Supervision (Supporting)], [Writing - Review & Editing (Supporting)]
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  • ORCID record for A. Georgiopoulou
R. Edwards
4School of Natural Sciences, Trinity College Dublin, Ireland
Roles: [Supervision (Supporting)], [Writing - Review & Editing (Supporting)]
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  • ORCID record for R. Edwards
K. Van Landeghem
5School of Ocean Science, Bangor University, UK
Roles: [Writing - Review & Editing (Supporting)]
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  • ORCID record for K. Van Landeghem
M. Saher
5School of Ocean Science, Bangor University, UK
Roles: [Writing - Review & Editing (Supporting)]
  • Find this author on Google Scholar
  • Search for this author on this site
  • ORCID record for M. Saher
R. Chiverrell
6School of Environmental Sciences, University of Liverpool, UK
Roles: [Funding acquisition (Equal)]
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  • ORCID record for R. Chiverrell
D. Fabel
7Scottish Universities Environmental Research Centre, UK
Roles: [Funding acquisition (Equal)], [Writing - Review & Editing (Supporting)]
  • Find this author on Google Scholar
  • Search for this author on this site
  • ORCID record for D. Fabel
S. Moreton
8Natural Environment Research Council, Radiocarbon Facility, East Kilbride, UK
Roles: [Funding acquisition (Equal)], [Writing - Review & Editing (Supporting)]
  • Find this author on Google Scholar
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  • ORCID record for S. Moreton
S. Morgan
9School of Geography, Geology and the Environment, University of Leicester, UK
Roles: [Data curation (Supporting)]
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  • Search for this author on this site
  • ORCID record for S. Morgan
C.D. Clark
10Department of Geography, University of Sheffield, UK
Roles: [Funding acquisition (Equal)], [Writing - Review & Editing (Supporting)]
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Abstract

During the last glacial maximum, the British–Irish Ice Sheet (BIIS) extended to the shelf edge in the Malin Sea between Ireland and Scotland, delivering sediments to the Donegal Barra Fan (DBF). Analysis of well-preserved, glacially derived sediment in the DBF provides new insights on the character of the BIIS final deglaciation and palaeoenvironmental conditions at the Younger Dryas. Chaotic/laminated muds, ice-rafted debris (IRD)-rich layers and laminated sand–mud couplets are interpreted as respectively mass transport deposits, plumites and turbidites of BIIS-transported sediments. Peaks in IRD, constrained by radiocarbon dating to after 18 cal ka BP, indicate discrete intervals of iceberg calving during the last stages of deglaciation. Glacially derived sedimentation on the slope occurred until c. 16.9 cal ka BP. This is interpreted as the last time the ice sheet was present on to the shelf, allowing glacial meltwater to reach the fan. Bioturbated and foraminifera-rich muds above glaciomarine sediments are interpreted as interglacial hemipelagites and contourites, with the presence of Zoophycos suggesting restoration of bottom currents at the transition between stadial and interstadial conditions. During the Younger Dryas, Neogloboquadrina pachyderma sinistral abundances and an isolated peak in IRD indicate the temporary restoration of cold conditions and the presence of icebergs in the region.

Thematic collection: This article is part of the Early Career Research collection available at: https://www.lyellcollection.org/cc/SJG-early-career-research

  • © 2020 The Author(s). Published by The Geological Society of London for EGS and GSG. All rights reserved
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Scottish Journal of Geology: 56 (2)
Scottish Journal of Geology
Volume 56, Issue 2
November 2020
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Final deglaciation of the Malin Sea through meltwater release and calving events

Serena Tarlati, S. Benetti, S.L. Callard, C. Ó Cofaigh, P. Dunlop, A. Georgiopoulou, R. Edwards, K. Van Landeghem, M. Saher, R. Chiverrell, D. Fabel, S. Moreton, S. Morgan and C.D. Clark
Scottish Journal of Geology, 56, 117-133, 6 May 2020, https://doi.org/10.1144/sjg2019-010
Serena Tarlati
1School of Geography and Environmental Sciences, Ulster University, Coleraine, UK
Roles: [Conceptualization (Lead)], [Data curation (Lead)], [Formal analysis (Lead)], [Investigation (Lead)], [Writing - Original Draft (Lead)], [Writing - Review & Editing (Lead)]
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • ORCID record for Serena Tarlati
  • For correspondence: Tarlati-S@ulster.ac.uk
S. Benetti
1School of Geography and Environmental Sciences, Ulster University, Coleraine, UK
Roles: [Conceptualization (Supporting)], [Funding acquisition (Equal)], [Supervision (Lead)], [Writing - Review & Editing (Supporting)]
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • ORCID record for S. Benetti
S.L. Callard
2Department of Geography, Durham University, UK
Roles: [Writing - Review & Editing (Supporting)]
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
C. Ó Cofaigh
2Department of Geography, Durham University, UK
Roles: [Writing - Review & Editing (Supporting)]
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
P. Dunlop
1School of Geography and Environmental Sciences, Ulster University, Coleraine, UK
Roles: [Supervision (Supporting)], [Writing - Review & Editing (Supporting)]
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • ORCID record for P. Dunlop
A. Georgiopoulou
3School of Environment and Technology, University of Brighton, UK
Roles: [Supervision (Supporting)], [Writing - Review & Editing (Supporting)]
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • ORCID record for A. Georgiopoulou
R. Edwards
4School of Natural Sciences, Trinity College Dublin, Ireland
Roles: [Supervision (Supporting)], [Writing - Review & Editing (Supporting)]
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • ORCID record for R. Edwards
K. Van Landeghem
5School of Ocean Science, Bangor University, UK
Roles: [Writing - Review & Editing (Supporting)]
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • ORCID record for K. Van Landeghem
M. Saher
5School of Ocean Science, Bangor University, UK
Roles: [Writing - Review & Editing (Supporting)]
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • ORCID record for M. Saher
R. Chiverrell
6School of Environmental Sciences, University of Liverpool, UK
Roles: [Funding acquisition (Equal)]
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • ORCID record for R. Chiverrell
D. Fabel
7Scottish Universities Environmental Research Centre, UK
Roles: [Funding acquisition (Equal)], [Writing - Review & Editing (Supporting)]
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • ORCID record for D. Fabel
S. Moreton
8Natural Environment Research Council, Radiocarbon Facility, East Kilbride, UK
Roles: [Funding acquisition (Equal)], [Writing - Review & Editing (Supporting)]
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • ORCID record for S. Moreton
S. Morgan
9School of Geography, Geology and the Environment, University of Leicester, UK
Roles: [Data curation (Supporting)]
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • ORCID record for S. Morgan
C.D. Clark
10Department of Geography, University of Sheffield, UK
Roles: [Funding acquisition (Equal)], [Writing - Review & Editing (Supporting)]
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  • Find this author on PubMed
  • Search for this author on this site

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Final deglaciation of the Malin Sea through meltwater release and calving events

Serena Tarlati, S. Benetti, S.L. Callard, C. Ó Cofaigh, P. Dunlop, A. Georgiopoulou, R. Edwards, K. Van Landeghem, M. Saher, R. Chiverrell, D. Fabel, S. Moreton, S. Morgan and C.D. Clark
Scottish Journal of Geology, 56, 117-133, 6 May 2020, https://doi.org/10.1144/sjg2019-010
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