Tracing marine cryptotephras in the North Atlantic during the last glacial period: Improving the North Atlantic marine tephrostratigraphic framework
Tephrochronology is increasingly being recognised as a key tool for the correlation of disparate palae-oclimatic archives, underpinning chronological models and facilitating climatically independent comparisons of climate proxies. Tephra frameworks integrating both distal and proximal tephra occurre...
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fttriple:oai:gotriple.eu:10670/1.io1pic 2023-05-15T16:29:54+02:00 Tracing marine cryptotephras in the North Atlantic during the last glacial period: Improving the North Atlantic marine tephrostratigraphic framework Abbott, Peter M. Griggs, Adam J. Bourne, Anna J. Chapman, Mark R. Davies, Siwan M. https://doi.org/10.1016/j.quascirev.2018.03.023 https://archimer.ifremer.fr/doc/00495/60702/83611.pdf https://archimer.ifremer.fr/doc/00495/60702/ en eng Pergamon-elsevier Science Ltd doi:10.1016/j.quascirev.2018.03.023 10670/1.io1pic https://archimer.ifremer.fr/doc/00495/60702/83611.pdf https://archimer.ifremer.fr/doc/00495/60702/ other Archimer, archive institutionnelle de l'Ifremer Quaternary Science Reviews (0277-3791) (Pergamon-elsevier Science Ltd), 2018-06 , Vol. 189 , P. 169-186 geo envir Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ fttriple https://doi.org/10.1016/j.quascirev.2018.03.023 2023-01-22T18:27:27Z Tephrochronology is increasingly being recognised as a key tool for the correlation of disparate palae-oclimatic archives, underpinning chronological models and facilitating climatically independent comparisons of climate proxies. Tephra frameworks integrating both distal and proximal tephra occurrences are essential to these investigations providing key details on their spatial distributions, geochemical signatures, eruptive sources as well as any available chronological and/or stratigraphic information. Frameworks also help to avoid mis-correlation of horizons and provide important information on volcanic history. Here we present a comprehensive chronostratigraphic framework of 14 tephra horizons from North Atlantic marine sequences spanning 60-25 cal ka BR Horizons previously discovered as visible or coarse-grained deposits have been combined with 11 newly recognised volcanic deposits, identified through the application of cryptotephra identification and characterisation methods to a wide network of marine sequences. Their isochronous integrity has been assessed using their physical characteristics. All horizons originated from Iceland with the vast majority having a basaltic composition sourced from the Grimsvotn, Kverkfjoll, Hekla/Vatnafjoll and Katla volcanic systems. New occurrences, improved stratigraphic placements and a refinement of the geochemical signature of the NAAZ II are reported and the range of the FMAZ IV has been extended. In addition, several significant geochemical populations that further investigations could show to be isochronous are reported. This tephra framework provides the foundation for the correlation and synchronisation of these marine records to the Greenland ice-cores and European terrestrial records to investigate the phasing, rate, timing and mechanisms controlling rapid climate changes that characterised the last glacial period. Text Greenland Greenland ice cores Hekla Iceland Katla North Atlantic Unknown Greenland Grimsvotn ENVELOPE(-17.319,-17.319,64.416,64.416) Katla ENVELOPE(-19.062,-19.062,63.631,63.631) Quaternary Science Reviews 189 169 186 |
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English |
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spellingShingle |
geo envir Abbott, Peter M. Griggs, Adam J. Bourne, Anna J. Chapman, Mark R. Davies, Siwan M. Tracing marine cryptotephras in the North Atlantic during the last glacial period: Improving the North Atlantic marine tephrostratigraphic framework |
topic_facet |
geo envir |
description |
Tephrochronology is increasingly being recognised as a key tool for the correlation of disparate palae-oclimatic archives, underpinning chronological models and facilitating climatically independent comparisons of climate proxies. Tephra frameworks integrating both distal and proximal tephra occurrences are essential to these investigations providing key details on their spatial distributions, geochemical signatures, eruptive sources as well as any available chronological and/or stratigraphic information. Frameworks also help to avoid mis-correlation of horizons and provide important information on volcanic history. Here we present a comprehensive chronostratigraphic framework of 14 tephra horizons from North Atlantic marine sequences spanning 60-25 cal ka BR Horizons previously discovered as visible or coarse-grained deposits have been combined with 11 newly recognised volcanic deposits, identified through the application of cryptotephra identification and characterisation methods to a wide network of marine sequences. Their isochronous integrity has been assessed using their physical characteristics. All horizons originated from Iceland with the vast majority having a basaltic composition sourced from the Grimsvotn, Kverkfjoll, Hekla/Vatnafjoll and Katla volcanic systems. New occurrences, improved stratigraphic placements and a refinement of the geochemical signature of the NAAZ II are reported and the range of the FMAZ IV has been extended. In addition, several significant geochemical populations that further investigations could show to be isochronous are reported. This tephra framework provides the foundation for the correlation and synchronisation of these marine records to the Greenland ice-cores and European terrestrial records to investigate the phasing, rate, timing and mechanisms controlling rapid climate changes that characterised the last glacial period. |
format |
Text |
author |
Abbott, Peter M. Griggs, Adam J. Bourne, Anna J. Chapman, Mark R. Davies, Siwan M. |
author_facet |
Abbott, Peter M. Griggs, Adam J. Bourne, Anna J. Chapman, Mark R. Davies, Siwan M. |
author_sort |
Abbott, Peter M. |
title |
Tracing marine cryptotephras in the North Atlantic during the last glacial period: Improving the North Atlantic marine tephrostratigraphic framework |
title_short |
Tracing marine cryptotephras in the North Atlantic during the last glacial period: Improving the North Atlantic marine tephrostratigraphic framework |
title_full |
Tracing marine cryptotephras in the North Atlantic during the last glacial period: Improving the North Atlantic marine tephrostratigraphic framework |
title_fullStr |
Tracing marine cryptotephras in the North Atlantic during the last glacial period: Improving the North Atlantic marine tephrostratigraphic framework |
title_full_unstemmed |
Tracing marine cryptotephras in the North Atlantic during the last glacial period: Improving the North Atlantic marine tephrostratigraphic framework |
title_sort |
tracing marine cryptotephras in the north atlantic during the last glacial period: improving the north atlantic marine tephrostratigraphic framework |
publisher |
Pergamon-elsevier Science Ltd |
url |
https://doi.org/10.1016/j.quascirev.2018.03.023 https://archimer.ifremer.fr/doc/00495/60702/83611.pdf https://archimer.ifremer.fr/doc/00495/60702/ |
long_lat |
ENVELOPE(-17.319,-17.319,64.416,64.416) ENVELOPE(-19.062,-19.062,63.631,63.631) |
geographic |
Greenland Grimsvotn Katla |
geographic_facet |
Greenland Grimsvotn Katla |
genre |
Greenland Greenland ice cores Hekla Iceland Katla North Atlantic |
genre_facet |
Greenland Greenland ice cores Hekla Iceland Katla North Atlantic |
op_source |
Archimer, archive institutionnelle de l'Ifremer Quaternary Science Reviews (0277-3791) (Pergamon-elsevier Science Ltd), 2018-06 , Vol. 189 , P. 169-186 |
op_relation |
doi:10.1016/j.quascirev.2018.03.023 10670/1.io1pic https://archimer.ifremer.fr/doc/00495/60702/83611.pdf https://archimer.ifremer.fr/doc/00495/60702/ |
op_rights |
other |
op_doi |
https://doi.org/10.1016/j.quascirev.2018.03.023 |
container_title |
Quaternary Science Reviews |
container_volume |
189 |
container_start_page |
169 |
op_container_end_page |
186 |
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1766019612547219456 |