The discovery of the Younger Dryas, and comments on the current meaning and usage of the term
The Younger Dryas (YD) cold event was discovered in Denmark by Hartz and Mithers in 1904 and the term coined by Hartz in 1912. It was identified as a lacustrine clay bed containing plant macrofossils of an Arctic flora, including Dryas octopetala, and lying between Allerød and Holocene gyttjas conta...
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ftunivbergen:oai:bora.uib.no:11250/2766487 2023-05-15T15:05:42+02:00 The discovery of the Younger Dryas, and comments on the current meaning and usage of the term Mangerud, Jan 2021 application/pdf https://hdl.handle.net/11250/2766487 https://doi.org/10.1111/bor.12481 eng eng Wiley urn:issn:0300-9483 https://hdl.handle.net/11250/2766487 https://doi.org/10.1111/bor.12481 cristin:1857173 Boreas. 2021, 50(1), 1-5. Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2020 The Authors Boreas 1-5 50 1 Journal article Peer reviewed 2021 ftunivbergen https://doi.org/10.1111/bor.12481 2023-03-14T17:43:42Z The Younger Dryas (YD) cold event was discovered in Denmark by Hartz and Mithers in 1904 and the term coined by Hartz in 1912. It was identified as a lacustrine clay bed containing plant macrofossils of an Arctic flora, including Dryas octopetala, and lying between Allerød and Holocene gyttjas containing a warmer flora with birch trees. The YD is unique in the sense that it is the largest and most abrupt climate change on Earth since the Last Glacial Maximum and thus within the reach of radiocarbon dating. Yet, I consider it is part of a regular Dansgaard-Oeschger event. The term has been used for a climate event and for lithostratigraphical, biostratigraphical and several other stratigraphical units. I prefer using it as a geochronological and chronostratigraphical unit, i.e. that the YD represents a specific period of geological time and the rocks and sediments formed during this period. In the type area of southern Scandinavia, the YD chron represents the age and duration of the cold event. publishedVersion Article in Journal/Newspaper Arctic Climate change Dryas octopetala University of Bergen: Bergen Open Research Archive (BORA-UiB) Arctic Boreas 50 1 1 5 |
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Open Polar |
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University of Bergen: Bergen Open Research Archive (BORA-UiB) |
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ftunivbergen |
language |
English |
description |
The Younger Dryas (YD) cold event was discovered in Denmark by Hartz and Mithers in 1904 and the term coined by Hartz in 1912. It was identified as a lacustrine clay bed containing plant macrofossils of an Arctic flora, including Dryas octopetala, and lying between Allerød and Holocene gyttjas containing a warmer flora with birch trees. The YD is unique in the sense that it is the largest and most abrupt climate change on Earth since the Last Glacial Maximum and thus within the reach of radiocarbon dating. Yet, I consider it is part of a regular Dansgaard-Oeschger event. The term has been used for a climate event and for lithostratigraphical, biostratigraphical and several other stratigraphical units. I prefer using it as a geochronological and chronostratigraphical unit, i.e. that the YD represents a specific period of geological time and the rocks and sediments formed during this period. In the type area of southern Scandinavia, the YD chron represents the age and duration of the cold event. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Mangerud, Jan |
spellingShingle |
Mangerud, Jan The discovery of the Younger Dryas, and comments on the current meaning and usage of the term |
author_facet |
Mangerud, Jan |
author_sort |
Mangerud, Jan |
title |
The discovery of the Younger Dryas, and comments on the current meaning and usage of the term |
title_short |
The discovery of the Younger Dryas, and comments on the current meaning and usage of the term |
title_full |
The discovery of the Younger Dryas, and comments on the current meaning and usage of the term |
title_fullStr |
The discovery of the Younger Dryas, and comments on the current meaning and usage of the term |
title_full_unstemmed |
The discovery of the Younger Dryas, and comments on the current meaning and usage of the term |
title_sort |
discovery of the younger dryas, and comments on the current meaning and usage of the term |
publisher |
Wiley |
publishDate |
2021 |
url |
https://hdl.handle.net/11250/2766487 https://doi.org/10.1111/bor.12481 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change Dryas octopetala |
genre_facet |
Arctic Climate change Dryas octopetala |
op_source |
Boreas 1-5 50 1 |
op_relation |
urn:issn:0300-9483 https://hdl.handle.net/11250/2766487 https://doi.org/10.1111/bor.12481 cristin:1857173 Boreas. 2021, 50(1), 1-5. |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2020 The Authors |
op_doi |
https://doi.org/10.1111/bor.12481 |
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Boreas |
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50 |
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1 |
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5 |
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1766337348433346560 |