Faroe Marine Ash Zone IV: a new MIS 3 ash zone on the Faroe Islands margin
A basaltic tephra layer from MIS 3 has been discovered by analysis of cores from the Faroe Islands margin. The tephra layer appears up to 20 cm thick in some records. After the first main fall-out event the tephra is believed to be mainly deposited and redistributed by bottom currents. Geochemical a...
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ftdatacite:10.6084/m9.figshare.3453623.v1 2023-05-15T16:10:29+02:00 Faroe Marine Ash Zone IV: a new MIS 3 ash zone on the Faroe Islands margin Wastegård, Stefan Rasmussen, Tine L. 2016 https://dx.doi.org/10.6084/m9.figshare.3453623.v1 https://geolsoc.figshare.com/articles/journal_contribution/Faroe_Marine_Ash_Zone_IV_a_new_MIS_3_ash_zone_on_the_Faroe_Islands_margin/3453623/1 unknown Geological Society of London https://dx.doi.org/10.1144/sp398.3 https://dx.doi.org/10.6084/m9.figshare.3453623 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Geology FOS Earth and related environmental sciences Text article-journal Journal contribution ScholarlyArticle 2016 ftdatacite https://doi.org/10.6084/m9.figshare.3453623.v1 https://doi.org/10.1144/sp398.3 https://doi.org/10.6084/m9.figshare.3453623 2021-11-05T12:55:41Z A basaltic tephra layer from MIS 3 has been discovered by analysis of cores from the Faroe Islands margin. The tephra layer appears up to 20 cm thick in some records. After the first main fall-out event the tephra is believed to be mainly deposited and redistributed by bottom currents. Geochemical analyses suggest that the tephra is relatively undisturbed by allochtonous tephra grains and unmixed. The peak occurrences are in the lower part of GIS (Greenland Interstadial) 12 and we suggest naming this new tephra Faroe Marine Ash Zone IV (FMAZ IV), following the nomenclature adopted for previous ash zones found on the Faroe Islands margin. Geochemical analyses of the tephra show affinities with the Grímsvötn volcanic system in the Eastern Volcanic Zone in south Iceland. The average age of FMAZ IV from four independent age models is 46 800±1000 years BP. We suggest that the V5 ash zone, found on the Reykjanes Ridge is a correlative to the FMAZ IV. Text Faroe Islands Greenland Iceland DataCite Metadata Store (German National Library of Science and Technology) Faroe Islands Greenland Reykjanes ENVELOPE(-22.250,-22.250,65.467,65.467) |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Geology FOS Earth and related environmental sciences |
spellingShingle |
Geology FOS Earth and related environmental sciences Wastegård, Stefan Rasmussen, Tine L. Faroe Marine Ash Zone IV: a new MIS 3 ash zone on the Faroe Islands margin |
topic_facet |
Geology FOS Earth and related environmental sciences |
description |
A basaltic tephra layer from MIS 3 has been discovered by analysis of cores from the Faroe Islands margin. The tephra layer appears up to 20 cm thick in some records. After the first main fall-out event the tephra is believed to be mainly deposited and redistributed by bottom currents. Geochemical analyses suggest that the tephra is relatively undisturbed by allochtonous tephra grains and unmixed. The peak occurrences are in the lower part of GIS (Greenland Interstadial) 12 and we suggest naming this new tephra Faroe Marine Ash Zone IV (FMAZ IV), following the nomenclature adopted for previous ash zones found on the Faroe Islands margin. Geochemical analyses of the tephra show affinities with the Grímsvötn volcanic system in the Eastern Volcanic Zone in south Iceland. The average age of FMAZ IV from four independent age models is 46 800±1000 years BP. We suggest that the V5 ash zone, found on the Reykjanes Ridge is a correlative to the FMAZ IV. |
format |
Text |
author |
Wastegård, Stefan Rasmussen, Tine L. |
author_facet |
Wastegård, Stefan Rasmussen, Tine L. |
author_sort |
Wastegård, Stefan |
title |
Faroe Marine Ash Zone IV: a new MIS 3 ash zone on the Faroe Islands margin |
title_short |
Faroe Marine Ash Zone IV: a new MIS 3 ash zone on the Faroe Islands margin |
title_full |
Faroe Marine Ash Zone IV: a new MIS 3 ash zone on the Faroe Islands margin |
title_fullStr |
Faroe Marine Ash Zone IV: a new MIS 3 ash zone on the Faroe Islands margin |
title_full_unstemmed |
Faroe Marine Ash Zone IV: a new MIS 3 ash zone on the Faroe Islands margin |
title_sort |
faroe marine ash zone iv: a new mis 3 ash zone on the faroe islands margin |
publisher |
Geological Society of London |
publishDate |
2016 |
url |
https://dx.doi.org/10.6084/m9.figshare.3453623.v1 https://geolsoc.figshare.com/articles/journal_contribution/Faroe_Marine_Ash_Zone_IV_a_new_MIS_3_ash_zone_on_the_Faroe_Islands_margin/3453623/1 |
long_lat |
ENVELOPE(-22.250,-22.250,65.467,65.467) |
geographic |
Faroe Islands Greenland Reykjanes |
geographic_facet |
Faroe Islands Greenland Reykjanes |
genre |
Faroe Islands Greenland Iceland |
genre_facet |
Faroe Islands Greenland Iceland |
op_relation |
https://dx.doi.org/10.1144/sp398.3 https://dx.doi.org/10.6084/m9.figshare.3453623 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.3453623.v1 https://doi.org/10.1144/sp398.3 https://doi.org/10.6084/m9.figshare.3453623 |
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