A tephra lattice for Greenland and a reconstruction of volcanic events spanning 25–45 ka b2k
Tephra layers preserved within the Greenland ice-cores are crucial for the independent synchronisation of these high-resolution records to other palaeoclimatic archives. Here we present a new and detailed tephrochronological framework for the time period 25,000 - 45,000 a b2k that brings together re...
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ftunivbern:oai:boris.unibe.ch:70071 2023-08-20T04:06:11+02:00 A tephra lattice for Greenland and a reconstruction of volcanic events spanning 25–45 ka b2k Bourne, A.J. Cook, E. Abbott, P.M. Seierstad, I.K. Steffensen, J.P. Svensson, A. Fischer, H. Schüpbach, S. Davies, S.M. 2015 application/pdf https://boris.unibe.ch/70071/1/bourne15qsr.pdf https://boris.unibe.ch/70071/ eng eng Pergamon https://boris.unibe.ch/70071/ info:eu-repo/semantics/restrictedAccess Bourne, A.J.; Cook, E.; Abbott, P.M.; Seierstad, I.K.; Steffensen, J.P.; Svensson, A.; Fischer, H.; Schüpbach, S.; Davies, S.M. (2015). A tephra lattice for Greenland and a reconstruction of volcanic events spanning 25–45 ka b2k. Quaternary Science Reviews, 118, pp. 122-141. Pergamon 10.1016/j.quascirev.2014.07.017 <http://dx.doi.org/10.1016/j.quascirev.2014.07.017> 530 Physics info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2015 ftunivbern https://doi.org/10.1016/j.quascirev.2014.07.017 2023-07-31T21:18:42Z Tephra layers preserved within the Greenland ice-cores are crucial for the independent synchronisation of these high-resolution records to other palaeoclimatic archives. Here we present a new and detailed tephrochronological framework for the time period 25,000 - 45,000 a b2k that brings together results from 4 deep Greenland ice-cores. In total, 99 tephra deposits, the majority of which are preserved as cryptotephra, are described from the NGRIP, NEEM, GRIP and DYE-3 records. The major element signatures of single glass shards within these deposits indicate that 93 are basaltic in composition all originating from Iceland. Specifically, 43 originate from Grimsv € otn, 20 are thought to be sourced from the Katla volcanic system and 17 show affinity to the Kverkfj € oll system. Robust geochemical characterisations, independent ages derived from the GICC05 ice-core chronology, and the stratigraphic positions of these deposits relative to the Dansgaard-Oeschger climate events represent a key framework that provides new information on the frequency and nature of volcanic events in the North Atlantic region between GS-3 and GI-12. Of particular importance are 19 tephra deposits that lie on the rapid climatic transitions that punctuate the last glacial period. This framework of well-constrained, time-synchronous tie-lines represents an important step towards the independent synchronisation of marine, terrestrial and ice-core records from the North Atlantic region, in order to assess the phasing of rapid climatic changes during the last glacial period. Article in Journal/Newspaper Dye 3 Dye-3 Greenland Greenland ice cores GRIP ice core Iceland Katla NGRIP North Atlantic BORIS (Bern Open Repository and Information System, University of Bern) Greenland Katla ENVELOPE(-19.062,-19.062,63.631,63.631) Quaternary Science Reviews 118 122 141 |
institution |
Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
topic |
530 Physics |
spellingShingle |
530 Physics Bourne, A.J. Cook, E. Abbott, P.M. Seierstad, I.K. Steffensen, J.P. Svensson, A. Fischer, H. Schüpbach, S. Davies, S.M. A tephra lattice for Greenland and a reconstruction of volcanic events spanning 25–45 ka b2k |
topic_facet |
530 Physics |
description |
Tephra layers preserved within the Greenland ice-cores are crucial for the independent synchronisation of these high-resolution records to other palaeoclimatic archives. Here we present a new and detailed tephrochronological framework for the time period 25,000 - 45,000 a b2k that brings together results from 4 deep Greenland ice-cores. In total, 99 tephra deposits, the majority of which are preserved as cryptotephra, are described from the NGRIP, NEEM, GRIP and DYE-3 records. The major element signatures of single glass shards within these deposits indicate that 93 are basaltic in composition all originating from Iceland. Specifically, 43 originate from Grimsv € otn, 20 are thought to be sourced from the Katla volcanic system and 17 show affinity to the Kverkfj € oll system. Robust geochemical characterisations, independent ages derived from the GICC05 ice-core chronology, and the stratigraphic positions of these deposits relative to the Dansgaard-Oeschger climate events represent a key framework that provides new information on the frequency and nature of volcanic events in the North Atlantic region between GS-3 and GI-12. Of particular importance are 19 tephra deposits that lie on the rapid climatic transitions that punctuate the last glacial period. This framework of well-constrained, time-synchronous tie-lines represents an important step towards the independent synchronisation of marine, terrestrial and ice-core records from the North Atlantic region, in order to assess the phasing of rapid climatic changes during the last glacial period. |
format |
Article in Journal/Newspaper |
author |
Bourne, A.J. Cook, E. Abbott, P.M. Seierstad, I.K. Steffensen, J.P. Svensson, A. Fischer, H. Schüpbach, S. Davies, S.M. |
author_facet |
Bourne, A.J. Cook, E. Abbott, P.M. Seierstad, I.K. Steffensen, J.P. Svensson, A. Fischer, H. Schüpbach, S. Davies, S.M. |
author_sort |
Bourne, A.J. |
title |
A tephra lattice for Greenland and a reconstruction of volcanic events spanning 25–45 ka b2k |
title_short |
A tephra lattice for Greenland and a reconstruction of volcanic events spanning 25–45 ka b2k |
title_full |
A tephra lattice for Greenland and a reconstruction of volcanic events spanning 25–45 ka b2k |
title_fullStr |
A tephra lattice for Greenland and a reconstruction of volcanic events spanning 25–45 ka b2k |
title_full_unstemmed |
A tephra lattice for Greenland and a reconstruction of volcanic events spanning 25–45 ka b2k |
title_sort |
tephra lattice for greenland and a reconstruction of volcanic events spanning 25–45 ka b2k |
publisher |
Pergamon |
publishDate |
2015 |
url |
https://boris.unibe.ch/70071/1/bourne15qsr.pdf https://boris.unibe.ch/70071/ |
long_lat |
ENVELOPE(-19.062,-19.062,63.631,63.631) |
geographic |
Greenland Katla |
geographic_facet |
Greenland Katla |
genre |
Dye 3 Dye-3 Greenland Greenland ice cores GRIP ice core Iceland Katla NGRIP North Atlantic |
genre_facet |
Dye 3 Dye-3 Greenland Greenland ice cores GRIP ice core Iceland Katla NGRIP North Atlantic |
op_source |
Bourne, A.J.; Cook, E.; Abbott, P.M.; Seierstad, I.K.; Steffensen, J.P.; Svensson, A.; Fischer, H.; Schüpbach, S.; Davies, S.M. (2015). A tephra lattice for Greenland and a reconstruction of volcanic events spanning 25–45 ka b2k. Quaternary Science Reviews, 118, pp. 122-141. Pergamon 10.1016/j.quascirev.2014.07.017 <http://dx.doi.org/10.1016/j.quascirev.2014.07.017> |
op_relation |
https://boris.unibe.ch/70071/ |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2014.07.017 |
container_title |
Quaternary Science Reviews |
container_volume |
118 |
container_start_page |
122 |
op_container_end_page |
141 |
_version_ |
1774717131150065664 |