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...
Published in: | Quaternary Science Reviews |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Pergamon-elsevier Science Ltd
2018
|
Subjects: | |
Online Access: | https://archimer.ifremer.fr/doc/00495/60702/83611.pdf https://doi.org/10.1016/j.quascirev.2018.03.023 https://archimer.ifremer.fr/doc/00495/60702/ |
id |
ftarchimer:oai:archimer.ifremer.fr:60702 |
---|---|
record_format |
openpolar |
spelling |
ftarchimer:oai:archimer.ifremer.fr:60702 2023-05-15T16:30:01+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. 2018-06 application/pdf https://archimer.ifremer.fr/doc/00495/60702/83611.pdf https://doi.org/10.1016/j.quascirev.2018.03.023 https://archimer.ifremer.fr/doc/00495/60702/ eng eng Pergamon-elsevier Science Ltd info:eu-repo/grantAgreement/EC/FP7/259253/EU//TRACE https://archimer.ifremer.fr/doc/00495/60702/83611.pdf doi:10.1016/j.quascirev.2018.03.023 https://archimer.ifremer.fr/doc/00495/60702/ info:eu-repo/semantics/openAccess restricted use Quaternary Science Reviews (0277-3791) (Pergamon-elsevier Science Ltd), 2018-06 , Vol. 189 , P. 169-186 Quaternary Palaeoceanography Tephrochronology North Atlantic Tephra framework Marine cores text Publication info:eu-repo/semantics/article 2018 ftarchimer https://doi.org/10.1016/j.quascirev.2018.03.023 2021-09-23T20:32:41Z 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. Article in Journal/Newspaper Greenland Greenland ice cores Hekla Iceland Katla North Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) 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 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Quaternary Palaeoceanography Tephrochronology North Atlantic Tephra framework Marine cores |
spellingShingle |
Quaternary Palaeoceanography Tephrochronology North Atlantic Tephra framework Marine cores 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 |
Quaternary Palaeoceanography Tephrochronology North Atlantic Tephra framework Marine cores |
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 |
Article in Journal/Newspaper |
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 |
publishDate |
2018 |
url |
https://archimer.ifremer.fr/doc/00495/60702/83611.pdf https://doi.org/10.1016/j.quascirev.2018.03.023 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 |
Quaternary Science Reviews (0277-3791) (Pergamon-elsevier Science Ltd), 2018-06 , Vol. 189 , P. 169-186 |
op_relation |
info:eu-repo/grantAgreement/EC/FP7/259253/EU//TRACE https://archimer.ifremer.fr/doc/00495/60702/83611.pdf doi:10.1016/j.quascirev.2018.03.023 https://archimer.ifremer.fr/doc/00495/60702/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
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 |
_version_ |
1766019732726611968 |