Cryptotephrochronology of the Eemian and the last interglacial-glacial transition in the North East Atlantic
The Eemian interglacial and the onset of the subsequent glacial period serve as the most recent analogue for the natural operation of the climate system during the current interglacial. Pronounced climatic oscillations occurred during this period, but their nature and pattern are poorly understood d...
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ftarchimer:oai:archimer.ifremer.fr:37517 2023-05-15T16:50:41+02:00 Cryptotephrochronology of the Eemian and the last interglacial-glacial transition in the North East Atlantic Abbott, Peter M. Austin, William E. N. Davies, Siwan M. Pearce, Nicholas J. G. Hibbert, Fiona D. 2013-07 application/pdf https://archimer.ifremer.fr/doc/00264/37517/35822.pdf https://doi.org/10.1002/jqs.2641 https://archimer.ifremer.fr/doc/00264/37517/ eng eng Wiley-blackwell https://archimer.ifremer.fr/doc/00264/37517/35822.pdf doi:10.1002/jqs.2641 https://archimer.ifremer.fr/doc/00264/37517/ 2013 John Wiley & Sons, Ltd. info:eu-repo/semantics/openAccess restricted use Journal Of Quaternary Science (0267-8179) (Wiley-blackwell), 2013-07 , Vol. 28 , N. 5 , P. 501-514 cryptotephra Iceland isochrons palaeoclimatic correlation volcanic ash text Publication info:eu-repo/semantics/article 2013 ftarchimer https://doi.org/10.1002/jqs.2641 2021-09-23T20:26:05Z The Eemian interglacial and the onset of the subsequent glacial period serve as the most recent analogue for the natural operation of the climate system during the current interglacial. Pronounced climatic oscillations occurred during this period, but their nature and pattern are poorly understood due to dating limitations and unknown phase relationships between different regions and archives. Tephrochronology offers considerable potential for precise correlation of disparate palaeoclimatic archives preserving evidence of these rapid climatic transitions through the tracing of common isochronous tephra horizons. We outline the identification of three previously unknown cryptotephra horizons within a marine core from the Rockall Trough, North East Atlantic. This sequence preserves a high-resolution record of this interval and shard size, geochemical heterogeneity and the co-variance of shard concentrations with ice-rafted debris data are utilized to demonstrate that primary airfall was the most likely transport and depositional pathway. The main geochemical populations of these horizons have similar transitional alkali major and trace element compositions, suggesting that they were derived from a common Icelandic source, potentially the oraefajokull volcanic system. These tephra horizons represent additions to the North Atlantic event stratigraphy for this period and tentative correlations to Icelandic terrestrial deposits are proposed for two horizons. Article in Journal/Newspaper Iceland North Atlantic North East Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Rockall Trough ENVELOPE(-15.036,-15.036,53.825,53.825) Journal of Quaternary Science 28 5 501 514 |
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 |
cryptotephra Iceland isochrons palaeoclimatic correlation volcanic ash |
spellingShingle |
cryptotephra Iceland isochrons palaeoclimatic correlation volcanic ash Abbott, Peter M. Austin, William E. N. Davies, Siwan M. Pearce, Nicholas J. G. Hibbert, Fiona D. Cryptotephrochronology of the Eemian and the last interglacial-glacial transition in the North East Atlantic |
topic_facet |
cryptotephra Iceland isochrons palaeoclimatic correlation volcanic ash |
description |
The Eemian interglacial and the onset of the subsequent glacial period serve as the most recent analogue for the natural operation of the climate system during the current interglacial. Pronounced climatic oscillations occurred during this period, but their nature and pattern are poorly understood due to dating limitations and unknown phase relationships between different regions and archives. Tephrochronology offers considerable potential for precise correlation of disparate palaeoclimatic archives preserving evidence of these rapid climatic transitions through the tracing of common isochronous tephra horizons. We outline the identification of three previously unknown cryptotephra horizons within a marine core from the Rockall Trough, North East Atlantic. This sequence preserves a high-resolution record of this interval and shard size, geochemical heterogeneity and the co-variance of shard concentrations with ice-rafted debris data are utilized to demonstrate that primary airfall was the most likely transport and depositional pathway. The main geochemical populations of these horizons have similar transitional alkali major and trace element compositions, suggesting that they were derived from a common Icelandic source, potentially the oraefajokull volcanic system. These tephra horizons represent additions to the North Atlantic event stratigraphy for this period and tentative correlations to Icelandic terrestrial deposits are proposed for two horizons. |
format |
Article in Journal/Newspaper |
author |
Abbott, Peter M. Austin, William E. N. Davies, Siwan M. Pearce, Nicholas J. G. Hibbert, Fiona D. |
author_facet |
Abbott, Peter M. Austin, William E. N. Davies, Siwan M. Pearce, Nicholas J. G. Hibbert, Fiona D. |
author_sort |
Abbott, Peter M. |
title |
Cryptotephrochronology of the Eemian and the last interglacial-glacial transition in the North East Atlantic |
title_short |
Cryptotephrochronology of the Eemian and the last interglacial-glacial transition in the North East Atlantic |
title_full |
Cryptotephrochronology of the Eemian and the last interglacial-glacial transition in the North East Atlantic |
title_fullStr |
Cryptotephrochronology of the Eemian and the last interglacial-glacial transition in the North East Atlantic |
title_full_unstemmed |
Cryptotephrochronology of the Eemian and the last interglacial-glacial transition in the North East Atlantic |
title_sort |
cryptotephrochronology of the eemian and the last interglacial-glacial transition in the north east atlantic |
publisher |
Wiley-blackwell |
publishDate |
2013 |
url |
https://archimer.ifremer.fr/doc/00264/37517/35822.pdf https://doi.org/10.1002/jqs.2641 https://archimer.ifremer.fr/doc/00264/37517/ |
long_lat |
ENVELOPE(-15.036,-15.036,53.825,53.825) |
geographic |
Rockall Trough |
geographic_facet |
Rockall Trough |
genre |
Iceland North Atlantic North East Atlantic |
genre_facet |
Iceland North Atlantic North East Atlantic |
op_source |
Journal Of Quaternary Science (0267-8179) (Wiley-blackwell), 2013-07 , Vol. 28 , N. 5 , P. 501-514 |
op_relation |
https://archimer.ifremer.fr/doc/00264/37517/35822.pdf doi:10.1002/jqs.2641 https://archimer.ifremer.fr/doc/00264/37517/ |
op_rights |
2013 John Wiley & Sons, Ltd. info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1002/jqs.2641 |
container_title |
Journal of Quaternary Science |
container_volume |
28 |
container_issue |
5 |
container_start_page |
501 |
op_container_end_page |
514 |
_version_ |
1766040799314706432 |