Distal volcanic ash layers in the Lateglacial Interstadial (GI-1): problems of stratigraphic discrimination
A new Icelandic ash layer has been detected in mid-Interstadial sediments in a number of Scottish Lateglacial sequences and has been named the Penifiler Tephra. It is rhyolitic in composition and possesses a chemistry, which is similar to the Borrobol Tephra of early Lateglacial Interstadial age, wh...
Published in: | Quaternary Science Reviews |
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Language: | English |
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2008
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ftholloway:oai:repository.royalholloway.ac.uk:947691c4-1ba0-40fa-da0b-6a96b7259771/4 2023-05-15T16:39:21+02:00 Distal volcanic ash layers in the Lateglacial Interstadial (GI-1): problems of stratigraphic discrimination Pyne-O'Donnell, S. D. F. Blockley, Simon Turney, C. S. M. Lowe, J. J. 2008-1 application/pdf https://repository.royalholloway.ac.uk/items/947691c4-1ba0-40fa-da0b-6a96b7259771/4/ https://doi.org/10.1016/j.quascirev.2007.02.019 eng eng http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VBC-4RFD09B-1&_user=122871&_coverDate=01%2F31%2F2008&_alid=1216725471&_rdoc=1&_fmt=high&_orig=search&_cdi=5923&_sort=r&_st=4&_docanchor=&_ct=39&_acct=C000010084&_version=1&_urlVersion=0&_userid=122871&md5=e983e3bbb62aec6457342b75ee8e311f https://repository.royalholloway.ac.uk/items/947691c4-1ba0-40fa-da0b-6a96b7259771/4/ http://dx.doi.org/10.1016/j.quascirev.2007.02.019 Quaternary Science Reviews, 27 (1-2) GLACIAL-INTERGLACIAL TRANSITION ELECTRON-PROBE MICROANALYSIS NORTH-ATLANTIC REGION EARLY HOLOCENE WHITRIG BOG PALEOENVIRONMENTAL RECORD EVENT STRATIGRAPHY WESTERN NORWAY INNER HEBRIDES TEPHRA SHARDS Faculty of Science\Geography Research Groups and Centres\Geography\Centre for Quaternary Research info:eu-repo/semantics/article info:eu-repo/semantics/submittedVersion 2008 ftholloway https://doi.org/10.1016/j.quascirev.2007.02.019 2022-09-26T12:55:50Z A new Icelandic ash layer has been detected in mid-Interstadial sediments in a number of Scottish Lateglacial sequences and has been named the Penifiler Tephra. It is rhyolitic in composition and possesses a chemistry, which is similar to the Borrobol Tephra of early Lateglacial Interstadial age, which also occurs in a number of these same sequences. Where the Borrobol Tephra has been identified in these sequences it consistently exhibits a diffuse distribution accompanied in some cases by stratigraphic bimodality. A number of sedimentological and taphonomic factors are considered in order to account for this distribution. One possibility is that these distributions are produced by taphonomic factors. Another possibility is that the Borrobol Tephra may not be the product of a single Icelandic eruption, but of two events closely spaced in time. In at least two of the sequences investigated in this study, basaltic shards were found in association with the Penifiler and Borrobol tephras, suggesting either a basaltic phase associated with these eruptions, or coincident eruptions from a separate basaltic volcanic centre. The discovery of the new Penifiler Tephra makes a contribution to the regional tephrostratigraphic framework, and provides an additional isochron for assessing the synchroneity of palaeoenvironmental changes during the Interstadial. The true stratigraphic nature and age of the Borrobol Tephra, however, remains unresolved and, therefore. its use as an isochron is more problematic. The possible occurrence of basaltic populations may strengthen correlations with basaltic tephras recently detected in the NGRIP ice-core. (C) 2007 Elsevier Ltd. All rights reserved. Article in Journal/Newspaper ice core NGRIP North Atlantic Royal Holloway University of London: Royal Holloway Digital Repository Norway Quaternary Science Reviews 27 1-2 72 84 |
institution |
Open Polar |
collection |
Royal Holloway University of London: Royal Holloway Digital Repository |
op_collection_id |
ftholloway |
language |
English |
topic |
GLACIAL-INTERGLACIAL TRANSITION ELECTRON-PROBE MICROANALYSIS NORTH-ATLANTIC REGION EARLY HOLOCENE WHITRIG BOG PALEOENVIRONMENTAL RECORD EVENT STRATIGRAPHY WESTERN NORWAY INNER HEBRIDES TEPHRA SHARDS Faculty of Science\Geography Research Groups and Centres\Geography\Centre for Quaternary Research |
spellingShingle |
GLACIAL-INTERGLACIAL TRANSITION ELECTRON-PROBE MICROANALYSIS NORTH-ATLANTIC REGION EARLY HOLOCENE WHITRIG BOG PALEOENVIRONMENTAL RECORD EVENT STRATIGRAPHY WESTERN NORWAY INNER HEBRIDES TEPHRA SHARDS Faculty of Science\Geography Research Groups and Centres\Geography\Centre for Quaternary Research Pyne-O'Donnell, S. D. F. Blockley, Simon Turney, C. S. M. Lowe, J. J. Distal volcanic ash layers in the Lateglacial Interstadial (GI-1): problems of stratigraphic discrimination |
topic_facet |
GLACIAL-INTERGLACIAL TRANSITION ELECTRON-PROBE MICROANALYSIS NORTH-ATLANTIC REGION EARLY HOLOCENE WHITRIG BOG PALEOENVIRONMENTAL RECORD EVENT STRATIGRAPHY WESTERN NORWAY INNER HEBRIDES TEPHRA SHARDS Faculty of Science\Geography Research Groups and Centres\Geography\Centre for Quaternary Research |
description |
A new Icelandic ash layer has been detected in mid-Interstadial sediments in a number of Scottish Lateglacial sequences and has been named the Penifiler Tephra. It is rhyolitic in composition and possesses a chemistry, which is similar to the Borrobol Tephra of early Lateglacial Interstadial age, which also occurs in a number of these same sequences. Where the Borrobol Tephra has been identified in these sequences it consistently exhibits a diffuse distribution accompanied in some cases by stratigraphic bimodality. A number of sedimentological and taphonomic factors are considered in order to account for this distribution. One possibility is that these distributions are produced by taphonomic factors. Another possibility is that the Borrobol Tephra may not be the product of a single Icelandic eruption, but of two events closely spaced in time. In at least two of the sequences investigated in this study, basaltic shards were found in association with the Penifiler and Borrobol tephras, suggesting either a basaltic phase associated with these eruptions, or coincident eruptions from a separate basaltic volcanic centre. The discovery of the new Penifiler Tephra makes a contribution to the regional tephrostratigraphic framework, and provides an additional isochron for assessing the synchroneity of palaeoenvironmental changes during the Interstadial. The true stratigraphic nature and age of the Borrobol Tephra, however, remains unresolved and, therefore. its use as an isochron is more problematic. The possible occurrence of basaltic populations may strengthen correlations with basaltic tephras recently detected in the NGRIP ice-core. (C) 2007 Elsevier Ltd. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Pyne-O'Donnell, S. D. F. Blockley, Simon Turney, C. S. M. Lowe, J. J. |
author_facet |
Pyne-O'Donnell, S. D. F. Blockley, Simon Turney, C. S. M. Lowe, J. J. |
author_sort |
Pyne-O'Donnell, S. D. F. |
title |
Distal volcanic ash layers in the Lateglacial Interstadial (GI-1): problems of stratigraphic discrimination |
title_short |
Distal volcanic ash layers in the Lateglacial Interstadial (GI-1): problems of stratigraphic discrimination |
title_full |
Distal volcanic ash layers in the Lateglacial Interstadial (GI-1): problems of stratigraphic discrimination |
title_fullStr |
Distal volcanic ash layers in the Lateglacial Interstadial (GI-1): problems of stratigraphic discrimination |
title_full_unstemmed |
Distal volcanic ash layers in the Lateglacial Interstadial (GI-1): problems of stratigraphic discrimination |
title_sort |
distal volcanic ash layers in the lateglacial interstadial (gi-1): problems of stratigraphic discrimination |
publishDate |
2008 |
url |
https://repository.royalholloway.ac.uk/items/947691c4-1ba0-40fa-da0b-6a96b7259771/4/ https://doi.org/10.1016/j.quascirev.2007.02.019 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
ice core NGRIP North Atlantic |
genre_facet |
ice core NGRIP North Atlantic |
op_source |
Quaternary Science Reviews, 27 (1-2) |
op_relation |
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VBC-4RFD09B-1&_user=122871&_coverDate=01%2F31%2F2008&_alid=1216725471&_rdoc=1&_fmt=high&_orig=search&_cdi=5923&_sort=r&_st=4&_docanchor=&_ct=39&_acct=C000010084&_version=1&_urlVersion=0&_userid=122871&md5=e983e3bbb62aec6457342b75ee8e311f https://repository.royalholloway.ac.uk/items/947691c4-1ba0-40fa-da0b-6a96b7259771/4/ http://dx.doi.org/10.1016/j.quascirev.2007.02.019 |
op_doi |
https://doi.org/10.1016/j.quascirev.2007.02.019 |
container_title |
Quaternary Science Reviews |
container_volume |
27 |
container_issue |
1-2 |
container_start_page |
72 |
op_container_end_page |
84 |
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1766029690390183936 |