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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Published in:Geological Society, London, Special Publications
Main Authors: Wastegard, S., Rasmussen, T. L.
Other Authors: Austin, W. E. N.
Format: Book Part
Language:English
Published: Geological Society 2014
Subjects:
Online Access:https://oceanrep.geomar.de/id/eprint/33797/
https://oceanrep.geomar.de/id/eprint/33797/1/Wastegard.pdf
https://oceanrep.geomar.de/id/eprint/33797/7/Wastegard_Suppl.pdf
https://doi.org/10.1144/SP398.3
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spelling ftoceanrep:oai:oceanrep.geomar.de:33797 2023-05-15T16:10:27+02:00 Faroe Marine Ash Zone IV: a new MIS 3 ash zone on the Faroe Islands margin Wastegard, S. Rasmussen, T. L. Austin, W. E. N. 2014 text https://oceanrep.geomar.de/id/eprint/33797/ https://oceanrep.geomar.de/id/eprint/33797/1/Wastegard.pdf https://oceanrep.geomar.de/id/eprint/33797/7/Wastegard_Suppl.pdf https://doi.org/10.1144/SP398.3 en eng Geological Society https://oceanrep.geomar.de/id/eprint/33797/1/Wastegard.pdf https://oceanrep.geomar.de/id/eprint/33797/7/Wastegard_Suppl.pdf Wastegard, S. and Rasmussen, T. L. (2014) Faroe Marine Ash Zone IV: a new MIS 3 ash zone on the Faroe Islands margin. In: Marine techrochronology. , ed. by Austin, W. E. N. Geological Society Special Publication, 398 . Geological Society, London, pp. 81-93. DOI 10.1144/SP398.3 <https://doi.org/10.1144/SP398.3>. doi:10.1144/SP398.3 info:eu-repo/semantics/restrictedAccess Book chapter NonPeerReviewed 2014 ftoceanrep https://doi.org/10.1144/SP398.3 2023-04-07T15:27:23Z 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. Book Part Faroe Islands Greenland Iceland OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Faroe Islands Greenland Reykjanes ENVELOPE(-22.250,-22.250,65.467,65.467) Geological Society, London, Special Publications 398 1 81 93
institution Open Polar
collection OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
op_collection_id ftoceanrep
language English
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.
author2 Austin, W. E. N.
format Book Part
author Wastegard, S.
Rasmussen, T. L.
spellingShingle Wastegard, S.
Rasmussen, T. L.
Faroe Marine Ash Zone IV: a new MIS 3 ash zone on the Faroe Islands margin
author_facet Wastegard, S.
Rasmussen, T. L.
author_sort Wastegard, S.
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
publishDate 2014
url https://oceanrep.geomar.de/id/eprint/33797/
https://oceanrep.geomar.de/id/eprint/33797/1/Wastegard.pdf
https://oceanrep.geomar.de/id/eprint/33797/7/Wastegard_Suppl.pdf
https://doi.org/10.1144/SP398.3
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://oceanrep.geomar.de/id/eprint/33797/1/Wastegard.pdf
https://oceanrep.geomar.de/id/eprint/33797/7/Wastegard_Suppl.pdf
Wastegard, S. and Rasmussen, T. L. (2014) Faroe Marine Ash Zone IV: a new MIS 3 ash zone on the Faroe Islands margin. In: Marine techrochronology. , ed. by Austin, W. E. N. Geological Society Special Publication, 398 . Geological Society, London, pp. 81-93. DOI 10.1144/SP398.3 <https://doi.org/10.1144/SP398.3>.
doi:10.1144/SP398.3
op_rights info:eu-repo/semantics/restrictedAccess
op_doi https://doi.org/10.1144/SP398.3
container_title Geological Society, London, Special Publications
container_volume 398
container_issue 1
container_start_page 81
op_container_end_page 93
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