Paleoceanographic Development in Nordfjord, North East Greenland, During the Mid- and Late Holocene
Sediment core HH13-012GC-TUNU, retrieved from Nordfjord, North-East Greenland, has been investigated in order to reconstruct the paleoceanographic development during the mid- and late Holocene. Nordfjord is one of three tributary fjords to Kaiser Franz Joseph Fjord, and Waltershausen Gletcher is loc...
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UiT Norges arktiske universitet
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ftunivtroemsoe:oai:munin.uit.no:10037/11150 2023-05-15T15:02:06+02:00 Paleoceanographic Development in Nordfjord, North East Greenland, During the Mid- and Late Holocene Skjelvan, Bjørnar Liland 2017-05-15 https://hdl.handle.net/10037/11150 eng eng UiT Norges arktiske universitet UiT The Arctic University of Norway https://hdl.handle.net/10037/11150 openAccess Copyright 2017 The Author(s) VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Marin geologi: 466 VDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 GEO-3900 Master thesis Mastergradsoppgave 2017 ftunivtroemsoe 2021-06-25T17:55:18Z Sediment core HH13-012GC-TUNU, retrieved from Nordfjord, North-East Greenland, has been investigated in order to reconstruct the paleoceanographic development during the mid- and late Holocene. Nordfjord is one of three tributary fjords to Kaiser Franz Joseph Fjord, and Waltershausen Gletcher is located at its head. The fjord system is largely influenced by the Eastern Greenland Current. Most of the paleoceanographic research from fjords in Greenland have been done in the south-east, and south-west, whereas there are very few studies from the north-eastern part. In this study, results from the sediment core HH13-012GC-TUNU are based on benthic foraminiferal assemblages. An age model is established based on two AMS 14C dates, in addition to an assumed age of the uppermost part. From the results, three foraminiferal assemblage zones are established within the last ⁓7800 cal. yr. BP, covering the Holocene Climate Optimum, the Neoglaciation, and the Little Ice Age. The strong dominance of the species Cassidulina reniforme throughout the core indicates that the conditions within Nordfjord have been that of a glaciomarine environment during the last ⁓7800 cal. yr. High relative abundance of Islandiella Helenae indicates that Atlantic Water, and seasonal sea ice conditions influenced the area until ⁓5200 cal. yr. BP. The transition from the Holocene Climate Optimum to the Neoglaciation is marked by an abrupt increase in the cold water species Astrononion Gallowayi, indicating inflow of Arctic Water, combined with higher energy conditions. The last ⁓630 cal. yr. BP is dominated by Elphidium excavatum f. clavata, indicating continued inflow of Arctic Water, combined with seasonal sea ice cover. Master Thesis Arctic East Greenland Foraminifera* Greenland Sea ice Tunu University of Tromsø: Munin Open Research Archive Arctic Greenland |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Marin geologi: 466 VDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 GEO-3900 |
spellingShingle |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Marin geologi: 466 VDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 GEO-3900 Skjelvan, Bjørnar Liland Paleoceanographic Development in Nordfjord, North East Greenland, During the Mid- and Late Holocene |
topic_facet |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Marin geologi: 466 VDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 GEO-3900 |
description |
Sediment core HH13-012GC-TUNU, retrieved from Nordfjord, North-East Greenland, has been investigated in order to reconstruct the paleoceanographic development during the mid- and late Holocene. Nordfjord is one of three tributary fjords to Kaiser Franz Joseph Fjord, and Waltershausen Gletcher is located at its head. The fjord system is largely influenced by the Eastern Greenland Current. Most of the paleoceanographic research from fjords in Greenland have been done in the south-east, and south-west, whereas there are very few studies from the north-eastern part. In this study, results from the sediment core HH13-012GC-TUNU are based on benthic foraminiferal assemblages. An age model is established based on two AMS 14C dates, in addition to an assumed age of the uppermost part. From the results, three foraminiferal assemblage zones are established within the last ⁓7800 cal. yr. BP, covering the Holocene Climate Optimum, the Neoglaciation, and the Little Ice Age. The strong dominance of the species Cassidulina reniforme throughout the core indicates that the conditions within Nordfjord have been that of a glaciomarine environment during the last ⁓7800 cal. yr. High relative abundance of Islandiella Helenae indicates that Atlantic Water, and seasonal sea ice conditions influenced the area until ⁓5200 cal. yr. BP. The transition from the Holocene Climate Optimum to the Neoglaciation is marked by an abrupt increase in the cold water species Astrononion Gallowayi, indicating inflow of Arctic Water, combined with higher energy conditions. The last ⁓630 cal. yr. BP is dominated by Elphidium excavatum f. clavata, indicating continued inflow of Arctic Water, combined with seasonal sea ice cover. |
format |
Master Thesis |
author |
Skjelvan, Bjørnar Liland |
author_facet |
Skjelvan, Bjørnar Liland |
author_sort |
Skjelvan, Bjørnar Liland |
title |
Paleoceanographic Development in Nordfjord, North East Greenland, During the Mid- and Late Holocene |
title_short |
Paleoceanographic Development in Nordfjord, North East Greenland, During the Mid- and Late Holocene |
title_full |
Paleoceanographic Development in Nordfjord, North East Greenland, During the Mid- and Late Holocene |
title_fullStr |
Paleoceanographic Development in Nordfjord, North East Greenland, During the Mid- and Late Holocene |
title_full_unstemmed |
Paleoceanographic Development in Nordfjord, North East Greenland, During the Mid- and Late Holocene |
title_sort |
paleoceanographic development in nordfjord, north east greenland, during the mid- and late holocene |
publisher |
UiT Norges arktiske universitet |
publishDate |
2017 |
url |
https://hdl.handle.net/10037/11150 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic East Greenland Foraminifera* Greenland Sea ice Tunu |
genre_facet |
Arctic East Greenland Foraminifera* Greenland Sea ice Tunu |
op_relation |
https://hdl.handle.net/10037/11150 |
op_rights |
openAccess Copyright 2017 The Author(s) |
_version_ |
1766334093217234944 |