Re-evaluation and extension of the Marine Isotope Stage 5 tephrostratigraphy of the Faroe Islands region: The cryptotephra record
Previous studies of marine sequences from the Faroe Islands region have identified a series of coarse-grained tephra horizons deposited during Marine Isotope Stage (MIS) 5. Here we reassess the MIS 5 tephrostratigraphy of the Faroe Islands region and focus on the cryptotephra deposits preserved with...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Elsevier Science Bv
2014
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Online Access: | https://archimer.ifremer.fr/doc/00290/40096/38832.pdf https://archimer.ifremer.fr/doc/00290/40096/38833.xlsx https://doi.org/10.1016/j.palaeo.2014.05.004 https://archimer.ifremer.fr/doc/00290/40096/ |
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ftarchimer:oai:archimer.ifremer.fr:40096 2023-05-15T16:10:31+02:00 Re-evaluation and extension of the Marine Isotope Stage 5 tephrostratigraphy of the Faroe Islands region: The cryptotephra record Abbott, P. M. Austin, W. E. N. Davies, S. M. Pearce, N. J. G. Rasmussen, T. L. Wastegard, S. Brendryen, J. 2014-09-01 application/pdf https://archimer.ifremer.fr/doc/00290/40096/38832.pdf https://archimer.ifremer.fr/doc/00290/40096/38833.xlsx https://doi.org/10.1016/j.palaeo.2014.05.004 https://archimer.ifremer.fr/doc/00290/40096/ eng eng Elsevier Science Bv info:eu-repo/grantAgreement/EC/FP7/243908/EU//PAST4FUTURE https://archimer.ifremer.fr/doc/00290/40096/38832.pdf https://archimer.ifremer.fr/doc/00290/40096/38833.xlsx doi:10.1016/j.palaeo.2014.05.004 https://archimer.ifremer.fr/doc/00290/40096/ 2014 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license info:eu-repo/semantics/openAccess restricted use CC-BY Palaeogeography Palaeoclimatology Palaeoecology (0031-0182) (Elsevier Science Bv), 2014-09-01 , Vol. 409 , P. 153-168 Volcanic ash Iceland Marine sequences Isochrons Palaeoclimatic synchronisation text Publication info:eu-repo/semantics/article 2014 ftarchimer https://doi.org/10.1016/j.palaeo.2014.05.004 2021-09-23T20:26:50Z Previous studies of marine sequences from the Faroe Islands region have identified a series of coarse-grained tephra horizons deposited during Marine Isotope Stage (MIS) 5. Here we reassess the MIS 5 tephrostratigraphy of the Faroe Islands region and focus on the cryptotephra deposits preserved within the fine-grained fraction of marine core LINK 16. We also extend the record to encompass the late MIS 6 and early MIS 4 periods. A density separation technique, commonly used for tephra investigations in lacustrine settings but rarely applied to marine sediments, is utilised to explore the fine-grained material and EPMA and LA-ICP-MS are employed to determine the major and trace element composition of individual tephra shards. In total, 3 basaltic and 3 rhyolitic Icelandic cryptotephra deposits with homogeneous geochemical compositions are identified - all of which have the potential to act as isochronous tie-lines. Geochemical results highlight that the Grimsvotn volcanic system of Iceland is the predominant source of the basaltic horizons and the Oraefajokull or Torfajokull systems are the likely sources of the rhyolitic deposits. Three of the horizons have been previously recognised in Faroe Islands region marine sequences, with two of these deposits traceable into a Norwegian Sea sequence. An early MIS 4 rhyolitic horizon is the most widespread deposit as it can be traced into the Norwegian Sea and to the south into a record from the Rockall Trough. Basaltic and rhyolitic horizons deposited during late MIS 6 have not been recognised in other sequences and represent new additions to the regional tephrostratigraphy. Article in Journal/Newspaper Faroe Islands Iceland Norwegian Sea Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Faroe Islands Grimsvotn ENVELOPE(-17.319,-17.319,64.416,64.416) Norwegian Sea Rockall Trough ENVELOPE(-15.036,-15.036,53.825,53.825) Palaeogeography, Palaeoclimatology, Palaeoecology 409 153 168 |
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 |
Volcanic ash Iceland Marine sequences Isochrons Palaeoclimatic synchronisation |
spellingShingle |
Volcanic ash Iceland Marine sequences Isochrons Palaeoclimatic synchronisation Abbott, P. M. Austin, W. E. N. Davies, S. M. Pearce, N. J. G. Rasmussen, T. L. Wastegard, S. Brendryen, J. Re-evaluation and extension of the Marine Isotope Stage 5 tephrostratigraphy of the Faroe Islands region: The cryptotephra record |
topic_facet |
Volcanic ash Iceland Marine sequences Isochrons Palaeoclimatic synchronisation |
description |
Previous studies of marine sequences from the Faroe Islands region have identified a series of coarse-grained tephra horizons deposited during Marine Isotope Stage (MIS) 5. Here we reassess the MIS 5 tephrostratigraphy of the Faroe Islands region and focus on the cryptotephra deposits preserved within the fine-grained fraction of marine core LINK 16. We also extend the record to encompass the late MIS 6 and early MIS 4 periods. A density separation technique, commonly used for tephra investigations in lacustrine settings but rarely applied to marine sediments, is utilised to explore the fine-grained material and EPMA and LA-ICP-MS are employed to determine the major and trace element composition of individual tephra shards. In total, 3 basaltic and 3 rhyolitic Icelandic cryptotephra deposits with homogeneous geochemical compositions are identified - all of which have the potential to act as isochronous tie-lines. Geochemical results highlight that the Grimsvotn volcanic system of Iceland is the predominant source of the basaltic horizons and the Oraefajokull or Torfajokull systems are the likely sources of the rhyolitic deposits. Three of the horizons have been previously recognised in Faroe Islands region marine sequences, with two of these deposits traceable into a Norwegian Sea sequence. An early MIS 4 rhyolitic horizon is the most widespread deposit as it can be traced into the Norwegian Sea and to the south into a record from the Rockall Trough. Basaltic and rhyolitic horizons deposited during late MIS 6 have not been recognised in other sequences and represent new additions to the regional tephrostratigraphy. |
format |
Article in Journal/Newspaper |
author |
Abbott, P. M. Austin, W. E. N. Davies, S. M. Pearce, N. J. G. Rasmussen, T. L. Wastegard, S. Brendryen, J. |
author_facet |
Abbott, P. M. Austin, W. E. N. Davies, S. M. Pearce, N. J. G. Rasmussen, T. L. Wastegard, S. Brendryen, J. |
author_sort |
Abbott, P. M. |
title |
Re-evaluation and extension of the Marine Isotope Stage 5 tephrostratigraphy of the Faroe Islands region: The cryptotephra record |
title_short |
Re-evaluation and extension of the Marine Isotope Stage 5 tephrostratigraphy of the Faroe Islands region: The cryptotephra record |
title_full |
Re-evaluation and extension of the Marine Isotope Stage 5 tephrostratigraphy of the Faroe Islands region: The cryptotephra record |
title_fullStr |
Re-evaluation and extension of the Marine Isotope Stage 5 tephrostratigraphy of the Faroe Islands region: The cryptotephra record |
title_full_unstemmed |
Re-evaluation and extension of the Marine Isotope Stage 5 tephrostratigraphy of the Faroe Islands region: The cryptotephra record |
title_sort |
re-evaluation and extension of the marine isotope stage 5 tephrostratigraphy of the faroe islands region: the cryptotephra record |
publisher |
Elsevier Science Bv |
publishDate |
2014 |
url |
https://archimer.ifremer.fr/doc/00290/40096/38832.pdf https://archimer.ifremer.fr/doc/00290/40096/38833.xlsx https://doi.org/10.1016/j.palaeo.2014.05.004 https://archimer.ifremer.fr/doc/00290/40096/ |
long_lat |
ENVELOPE(-17.319,-17.319,64.416,64.416) ENVELOPE(-15.036,-15.036,53.825,53.825) |
geographic |
Faroe Islands Grimsvotn Norwegian Sea Rockall Trough |
geographic_facet |
Faroe Islands Grimsvotn Norwegian Sea Rockall Trough |
genre |
Faroe Islands Iceland Norwegian Sea |
genre_facet |
Faroe Islands Iceland Norwegian Sea |
op_source |
Palaeogeography Palaeoclimatology Palaeoecology (0031-0182) (Elsevier Science Bv), 2014-09-01 , Vol. 409 , P. 153-168 |
op_relation |
info:eu-repo/grantAgreement/EC/FP7/243908/EU//PAST4FUTURE https://archimer.ifremer.fr/doc/00290/40096/38832.pdf https://archimer.ifremer.fr/doc/00290/40096/38833.xlsx doi:10.1016/j.palaeo.2014.05.004 https://archimer.ifremer.fr/doc/00290/40096/ |
op_rights |
2014 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license info:eu-repo/semantics/openAccess restricted use |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1016/j.palaeo.2014.05.004 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
409 |
container_start_page |
153 |
op_container_end_page |
168 |
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1765995697204625408 |