The Drangajökull ice cap, northwest Iceland, persisted into the early-mid Holocene
Most glaciers and ice caps in Iceland experienced rapid deglaciation in the early Holocene, reaching a minimum extent during the Holocene Thermal Maximum. Here we present evidence of the Holocene glacial history from lake sediment cores retrieved from seven threshold lakes around the Drangajökull ic...
Published in: | Quaternary Science Reviews |
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Online Access: | https://pure.au.dk/portal/da/publications/the-drangajoekull-ice-cap-northwest-iceland-persisted-into-the-earlymid-holocene(246a2b17-206e-4b23-8d65-a8fbeba4e618).html https://doi.org/10.1016/j.quascirev.2016.07.007 |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/246a2b17-206e-4b23-8d65-a8fbeba4e618 2023-12-31T10:06:19+01:00 The Drangajökull ice cap, northwest Iceland, persisted into the early-mid Holocene Schomacker, Anders Brynjólfsson, Skafti Andreassen, Julie M. Gudmundsdóttir, Esther Ruth Olsen, Jesper Odgaard, Bent V. Håkansson, Lena Ingólfsson, Ólafur Larsen, Nicolaj K. 2016-09-15 https://pure.au.dk/portal/da/publications/the-drangajoekull-ice-cap-northwest-iceland-persisted-into-the-earlymid-holocene(246a2b17-206e-4b23-8d65-a8fbeba4e618).html https://doi.org/10.1016/j.quascirev.2016.07.007 eng eng https://pure.au.dk/portal/da/publications/the-drangajoekull-ice-cap-northwest-iceland-persisted-into-the-earlymid-holocene(246a2b17-206e-4b23-8d65-a8fbeba4e618).html info:eu-repo/semantics/restrictedAccess Schomacker , A , Brynjólfsson , S , Andreassen , J M , Gudmundsdóttir , E R , Olsen , J , Odgaard , B V , Håkansson , L , Ingólfsson , Ó & Larsen , N K 2016 , ' The Drangajökull ice cap, northwest Iceland, persisted into the early-mid Holocene ' , Quaternary Science Reviews , vol. 148 , pp. 68-84 . https://doi.org/10.1016/j.quascirev.2016.07.007 Drangajökull Glacier Holocene Holocene thermal maximum Lake sediment Threshold lake article 2016 ftuniaarhuspubl https://doi.org/10.1016/j.quascirev.2016.07.007 2023-12-07T00:01:31Z Most glaciers and ice caps in Iceland experienced rapid deglaciation in the early Holocene, reaching a minimum extent during the Holocene Thermal Maximum. Here we present evidence of the Holocene glacial history from lake sediment cores retrieved from seven threshold lakes around the Drangajökull ice cap in the Vestfirðir peninsula, NW Iceland. The sediment cores show on/off signals of glacial meltwater activity, as minerogenic material deposited from glacial meltwater alternates with organic-rich material (gyttja) deposited without glacial meltwater. We base the chronology of the sediment cores on 14 C ages and geochemical identification of key tephra layers with known ages. A 25-cm thick layer of the Saksunarvatn tephra in Lake Skorarvatn indicates that the northern part of the ice cap had reached a similar size as today or was smaller already by 10.2 cal kyr BP. However, 14 C ages of lake sediment cores from the highlands southeast of Drangajökull suggest that this part of the ice cap was larger than today until 7.8–7.2 cal kyr BP. Even today, the Drangajökull ice cap has a different behavior than the main ice caps in Iceland, characterized by a very low glaciation limit. Because palaeoclimatic proxies show an early-mid Holocene temperature optimum in this part of Iceland, we suggest that the persistence of Drangajökull into the early Holocene and, possibly, also the entire Holocene was due to high winter precipitation. Article in Journal/Newspaper Drangajökull glacier Ice cap Iceland Aarhus University: Research Quaternary Science Reviews 148 68 84 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Drangajökull Glacier Holocene Holocene thermal maximum Lake sediment Threshold lake |
spellingShingle |
Drangajökull Glacier Holocene Holocene thermal maximum Lake sediment Threshold lake Schomacker, Anders Brynjólfsson, Skafti Andreassen, Julie M. Gudmundsdóttir, Esther Ruth Olsen, Jesper Odgaard, Bent V. Håkansson, Lena Ingólfsson, Ólafur Larsen, Nicolaj K. The Drangajökull ice cap, northwest Iceland, persisted into the early-mid Holocene |
topic_facet |
Drangajökull Glacier Holocene Holocene thermal maximum Lake sediment Threshold lake |
description |
Most glaciers and ice caps in Iceland experienced rapid deglaciation in the early Holocene, reaching a minimum extent during the Holocene Thermal Maximum. Here we present evidence of the Holocene glacial history from lake sediment cores retrieved from seven threshold lakes around the Drangajökull ice cap in the Vestfirðir peninsula, NW Iceland. The sediment cores show on/off signals of glacial meltwater activity, as minerogenic material deposited from glacial meltwater alternates with organic-rich material (gyttja) deposited without glacial meltwater. We base the chronology of the sediment cores on 14 C ages and geochemical identification of key tephra layers with known ages. A 25-cm thick layer of the Saksunarvatn tephra in Lake Skorarvatn indicates that the northern part of the ice cap had reached a similar size as today or was smaller already by 10.2 cal kyr BP. However, 14 C ages of lake sediment cores from the highlands southeast of Drangajökull suggest that this part of the ice cap was larger than today until 7.8–7.2 cal kyr BP. Even today, the Drangajökull ice cap has a different behavior than the main ice caps in Iceland, characterized by a very low glaciation limit. Because palaeoclimatic proxies show an early-mid Holocene temperature optimum in this part of Iceland, we suggest that the persistence of Drangajökull into the early Holocene and, possibly, also the entire Holocene was due to high winter precipitation. |
format |
Article in Journal/Newspaper |
author |
Schomacker, Anders Brynjólfsson, Skafti Andreassen, Julie M. Gudmundsdóttir, Esther Ruth Olsen, Jesper Odgaard, Bent V. Håkansson, Lena Ingólfsson, Ólafur Larsen, Nicolaj K. |
author_facet |
Schomacker, Anders Brynjólfsson, Skafti Andreassen, Julie M. Gudmundsdóttir, Esther Ruth Olsen, Jesper Odgaard, Bent V. Håkansson, Lena Ingólfsson, Ólafur Larsen, Nicolaj K. |
author_sort |
Schomacker, Anders |
title |
The Drangajökull ice cap, northwest Iceland, persisted into the early-mid Holocene |
title_short |
The Drangajökull ice cap, northwest Iceland, persisted into the early-mid Holocene |
title_full |
The Drangajökull ice cap, northwest Iceland, persisted into the early-mid Holocene |
title_fullStr |
The Drangajökull ice cap, northwest Iceland, persisted into the early-mid Holocene |
title_full_unstemmed |
The Drangajökull ice cap, northwest Iceland, persisted into the early-mid Holocene |
title_sort |
drangajökull ice cap, northwest iceland, persisted into the early-mid holocene |
publishDate |
2016 |
url |
https://pure.au.dk/portal/da/publications/the-drangajoekull-ice-cap-northwest-iceland-persisted-into-the-earlymid-holocene(246a2b17-206e-4b23-8d65-a8fbeba4e618).html https://doi.org/10.1016/j.quascirev.2016.07.007 |
genre |
Drangajökull glacier Ice cap Iceland |
genre_facet |
Drangajökull glacier Ice cap Iceland |
op_source |
Schomacker , A , Brynjólfsson , S , Andreassen , J M , Gudmundsdóttir , E R , Olsen , J , Odgaard , B V , Håkansson , L , Ingólfsson , Ó & Larsen , N K 2016 , ' The Drangajökull ice cap, northwest Iceland, persisted into the early-mid Holocene ' , Quaternary Science Reviews , vol. 148 , pp. 68-84 . https://doi.org/10.1016/j.quascirev.2016.07.007 |
op_relation |
https://pure.au.dk/portal/da/publications/the-drangajoekull-ice-cap-northwest-iceland-persisted-into-the-earlymid-holocene(246a2b17-206e-4b23-8d65-a8fbeba4e618).html |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2016.07.007 |
container_title |
Quaternary Science Reviews |
container_volume |
148 |
container_start_page |
68 |
op_container_end_page |
84 |
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