Late Quaternary foraminiferal record in Murchisonfjorden, Nordaustlandet, Svalbard
Benthic foraminiferal assemblages from Nordaustlandet, Svalbard, are described for the first time with the objective of reconstructing the palaeoenvironmental conditions in the area during the late Quaternary. Investigations were carried out on marine deposits exposed along the southern shores of Mu...
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Norwegian Polar Institute
2010
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ftjpolarres:oai:journals.openacademia.net:article/2934 2023-05-15T15:08:57+02:00 Late Quaternary foraminiferal record in Murchisonfjorden, Nordaustlandet, Svalbard Kubischta, Frauke Knudsen, Karen Luise Kaakinen, Anu Salonen, Veli-Pekka 2010-12-01 application/pdf https://polarresearch.net/index.php/polar/article/view/2934 https://doi.org/10.3402/polar.v29i3.6081 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/2934/6561 https://polarresearch.net/index.php/polar/article/view/2934 doi:10.3402/polar.v29i3.6081 Copyright (c) 2018 Polar Research Polar Research; Vol. 29 No. 3 (2010); 283-297 1751-8369 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2010 ftjpolarres https://doi.org/10.3402/polar.v29i3.6081 2021-11-11T19:13:37Z Benthic foraminiferal assemblages from Nordaustlandet, Svalbard, are described for the first time with the objective of reconstructing the palaeoenvironmental conditions in the area during the late Quaternary. Investigations were carried out on marine deposits exposed along the southern shores of Murchisonfjorden. Five foraminiferal assemblages (A1–A5), representing different palaeoenvironmental conditions, were identified from the marine intervals, i.e., the Cassidulina reniforme–Elphidium albiumbilicatum assemblage (A1) from the Early Weichselian, the Islandiella helenae–Cibicides lobatulus assemblage (A2) from the Early Weichselian, the Cibicides lobatulus–Cassidulina reniforme assemblage (A3) from marine isotope stage 3, the Elphidium albiumbilicatum assemblage (A4) from the early Holocene and the Astrononion gallowayi assemblage (A5) from the mid-Holocene. Assemblages A1–A5 are compared with modern and fossil Quaternary assemblages from Arctic regions. Particularly notable is the fact that a well-defined Middle Weichselian assemblage in Svalbard is described for the first time, i.e., the Cibicides lobatulus– Cassidulina reniforme assemblage. All the assemblages from Nordaustlandet represent glacier-distal, inner-shelf environments with an open connection to the ocean. The results reveal the occurrence of three marine intervals (ice-free periods) in the north-western part of Nordaustlandet during the Weichselian, as well as ice-free conditions during most of the Holocene. A comparison of the assemblages from Nordaustlandet with previously published foraminiferal zones from onshore sections elsewhere in Svalbard show some degree of similarity, but also show considerable variation in species compositions, presumably caused by local environmental differences. Article in Journal/Newspaper Arctic Foraminifera* glacier Nordaustlandet Polar Research Svalbard Polar Research (E-Journal) Arctic Svalbard Nordaustlandet ENVELOPE(22.400,22.400,79.800,79.800) Murchisonfjorden ENVELOPE(18.429,18.429,79.986,79.986) Polar Research 29 3 283 297 |
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Open Polar |
collection |
Polar Research (E-Journal) |
op_collection_id |
ftjpolarres |
language |
English |
description |
Benthic foraminiferal assemblages from Nordaustlandet, Svalbard, are described for the first time with the objective of reconstructing the palaeoenvironmental conditions in the area during the late Quaternary. Investigations were carried out on marine deposits exposed along the southern shores of Murchisonfjorden. Five foraminiferal assemblages (A1–A5), representing different palaeoenvironmental conditions, were identified from the marine intervals, i.e., the Cassidulina reniforme–Elphidium albiumbilicatum assemblage (A1) from the Early Weichselian, the Islandiella helenae–Cibicides lobatulus assemblage (A2) from the Early Weichselian, the Cibicides lobatulus–Cassidulina reniforme assemblage (A3) from marine isotope stage 3, the Elphidium albiumbilicatum assemblage (A4) from the early Holocene and the Astrononion gallowayi assemblage (A5) from the mid-Holocene. Assemblages A1–A5 are compared with modern and fossil Quaternary assemblages from Arctic regions. Particularly notable is the fact that a well-defined Middle Weichselian assemblage in Svalbard is described for the first time, i.e., the Cibicides lobatulus– Cassidulina reniforme assemblage. All the assemblages from Nordaustlandet represent glacier-distal, inner-shelf environments with an open connection to the ocean. The results reveal the occurrence of three marine intervals (ice-free periods) in the north-western part of Nordaustlandet during the Weichselian, as well as ice-free conditions during most of the Holocene. A comparison of the assemblages from Nordaustlandet with previously published foraminiferal zones from onshore sections elsewhere in Svalbard show some degree of similarity, but also show considerable variation in species compositions, presumably caused by local environmental differences. |
format |
Article in Journal/Newspaper |
author |
Kubischta, Frauke Knudsen, Karen Luise Kaakinen, Anu Salonen, Veli-Pekka |
spellingShingle |
Kubischta, Frauke Knudsen, Karen Luise Kaakinen, Anu Salonen, Veli-Pekka Late Quaternary foraminiferal record in Murchisonfjorden, Nordaustlandet, Svalbard |
author_facet |
Kubischta, Frauke Knudsen, Karen Luise Kaakinen, Anu Salonen, Veli-Pekka |
author_sort |
Kubischta, Frauke |
title |
Late Quaternary foraminiferal record in Murchisonfjorden, Nordaustlandet, Svalbard |
title_short |
Late Quaternary foraminiferal record in Murchisonfjorden, Nordaustlandet, Svalbard |
title_full |
Late Quaternary foraminiferal record in Murchisonfjorden, Nordaustlandet, Svalbard |
title_fullStr |
Late Quaternary foraminiferal record in Murchisonfjorden, Nordaustlandet, Svalbard |
title_full_unstemmed |
Late Quaternary foraminiferal record in Murchisonfjorden, Nordaustlandet, Svalbard |
title_sort |
late quaternary foraminiferal record in murchisonfjorden, nordaustlandet, svalbard |
publisher |
Norwegian Polar Institute |
publishDate |
2010 |
url |
https://polarresearch.net/index.php/polar/article/view/2934 https://doi.org/10.3402/polar.v29i3.6081 |
long_lat |
ENVELOPE(22.400,22.400,79.800,79.800) ENVELOPE(18.429,18.429,79.986,79.986) |
geographic |
Arctic Svalbard Nordaustlandet Murchisonfjorden |
geographic_facet |
Arctic Svalbard Nordaustlandet Murchisonfjorden |
genre |
Arctic Foraminifera* glacier Nordaustlandet Polar Research Svalbard |
genre_facet |
Arctic Foraminifera* glacier Nordaustlandet Polar Research Svalbard |
op_source |
Polar Research; Vol. 29 No. 3 (2010); 283-297 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/2934/6561 https://polarresearch.net/index.php/polar/article/view/2934 doi:10.3402/polar.v29i3.6081 |
op_rights |
Copyright (c) 2018 Polar Research |
op_doi |
https://doi.org/10.3402/polar.v29i3.6081 |
container_title |
Polar Research |
container_volume |
29 |
container_issue |
3 |
container_start_page |
283 |
op_container_end_page |
297 |
_version_ |
1766340216863326208 |