Evidence of permafrost in the Paleoproterozoic (c. 1.9 Ga) of Central Sweden
This paper reports on an ice-wedge pseudomorph that formed and is preserved in metavolcanic host material that was later transformed to metamorphic solid bedrock. It has been dated to 1,895 ± 5 Ma by U–Pb geochronology of zircon in the bedrock, an Early Proterozoic age. Detailed observation of the d...
Published in: | Permafrost and Periglacial Processes |
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Format: | Article in Journal/Newspaper |
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2021
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Online Access: | https://research.vu.nl/en/publications/91382377-10c1-4e14-8a46-bf51ef05100e https://doi.org/10.1002/ppp.2094 https://hdl.handle.net/1871.1/91382377-10c1-4e14-8a46-bf51ef05100e http://www.scopus.com/inward/record.url?scp=85097627940&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85097627940&partnerID=8YFLogxK |
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ftvuamstcris:oai:research.vu.nl:publications/91382377-10c1-4e14-8a46-bf51ef05100e 2024-09-15T18:29:42+00:00 Evidence of permafrost in the Paleoproterozoic (c. 1.9 Ga) of Central Sweden Vandenberghe, Jef Kuipers, Gerrit Beunk, Frank F. Yi, Keewook van der Wateren, Frederik M. 2021-01 https://research.vu.nl/en/publications/91382377-10c1-4e14-8a46-bf51ef05100e https://doi.org/10.1002/ppp.2094 https://hdl.handle.net/1871.1/91382377-10c1-4e14-8a46-bf51ef05100e http://www.scopus.com/inward/record.url?scp=85097627940&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85097627940&partnerID=8YFLogxK eng eng https://research.vu.nl/en/publications/91382377-10c1-4e14-8a46-bf51ef05100e info:eu-repo/semantics/openAccess Vandenberghe , J , Kuipers , G , Beunk , F F , Yi , K & van der Wateren , F M 2021 , ' Evidence of permafrost in the Paleoproterozoic (c. 1.9 Ga) of Central Sweden ' , Permafrost and Periglacial Processes , vol. 32 , no. 1 , pp. 169-177 . https://doi.org/10.1002/ppp.2094 Central Sweden early Proterozoic ice-wedge cast paleo-permafrost /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2021 ftvuamstcris https://doi.org/10.1002/ppp.2094 2024-08-22T00:13:34Z This paper reports on an ice-wedge pseudomorph that formed and is preserved in metavolcanic host material that was later transformed to metamorphic solid bedrock. It has been dated to 1,895 ± 5 Ma by U–Pb geochronology of zircon in the bedrock, an Early Proterozoic age. Detailed observation of the deformation structures of the wedge points to an ice-wedge pseudomorph based on typical downbending around the wedge and vertical lamination in the inner part of the wedge due to slumping into the wedge after the ice melted, along with a few remains of lateral pressure structures (such as folds and upturned strata) in the adjacent host sediment. The interpretation of the wedge structure as an ice-wedge pseudomorph confirms previous work on this topic. This ice-wedge pseudomorph demonstrates for the first time the existence of permafrost at c. 1.9 Ga. It indicates that permafrost and associated conditions were present in lowlands at low latitude at discrete time intervals early in Earth’s history. Although some caution should be applied, mean annual air temperature appears to have been slightly below the freezing point at that time. Article in Journal/Newspaper permafrost Permafrost and Periglacial Processes Vrije Universiteit Amsterdam (VU): Research Portal Permafrost and Periglacial Processes 32 1 169 177 |
institution |
Open Polar |
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Vrije Universiteit Amsterdam (VU): Research Portal |
op_collection_id |
ftvuamstcris |
language |
English |
topic |
Central Sweden early Proterozoic ice-wedge cast paleo-permafrost /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
Central Sweden early Proterozoic ice-wedge cast paleo-permafrost /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Vandenberghe, Jef Kuipers, Gerrit Beunk, Frank F. Yi, Keewook van der Wateren, Frederik M. Evidence of permafrost in the Paleoproterozoic (c. 1.9 Ga) of Central Sweden |
topic_facet |
Central Sweden early Proterozoic ice-wedge cast paleo-permafrost /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
This paper reports on an ice-wedge pseudomorph that formed and is preserved in metavolcanic host material that was later transformed to metamorphic solid bedrock. It has been dated to 1,895 ± 5 Ma by U–Pb geochronology of zircon in the bedrock, an Early Proterozoic age. Detailed observation of the deformation structures of the wedge points to an ice-wedge pseudomorph based on typical downbending around the wedge and vertical lamination in the inner part of the wedge due to slumping into the wedge after the ice melted, along with a few remains of lateral pressure structures (such as folds and upturned strata) in the adjacent host sediment. The interpretation of the wedge structure as an ice-wedge pseudomorph confirms previous work on this topic. This ice-wedge pseudomorph demonstrates for the first time the existence of permafrost at c. 1.9 Ga. It indicates that permafrost and associated conditions were present in lowlands at low latitude at discrete time intervals early in Earth’s history. Although some caution should be applied, mean annual air temperature appears to have been slightly below the freezing point at that time. |
format |
Article in Journal/Newspaper |
author |
Vandenberghe, Jef Kuipers, Gerrit Beunk, Frank F. Yi, Keewook van der Wateren, Frederik M. |
author_facet |
Vandenberghe, Jef Kuipers, Gerrit Beunk, Frank F. Yi, Keewook van der Wateren, Frederik M. |
author_sort |
Vandenberghe, Jef |
title |
Evidence of permafrost in the Paleoproterozoic (c. 1.9 Ga) of Central Sweden |
title_short |
Evidence of permafrost in the Paleoproterozoic (c. 1.9 Ga) of Central Sweden |
title_full |
Evidence of permafrost in the Paleoproterozoic (c. 1.9 Ga) of Central Sweden |
title_fullStr |
Evidence of permafrost in the Paleoproterozoic (c. 1.9 Ga) of Central Sweden |
title_full_unstemmed |
Evidence of permafrost in the Paleoproterozoic (c. 1.9 Ga) of Central Sweden |
title_sort |
evidence of permafrost in the paleoproterozoic (c. 1.9 ga) of central sweden |
publishDate |
2021 |
url |
https://research.vu.nl/en/publications/91382377-10c1-4e14-8a46-bf51ef05100e https://doi.org/10.1002/ppp.2094 https://hdl.handle.net/1871.1/91382377-10c1-4e14-8a46-bf51ef05100e http://www.scopus.com/inward/record.url?scp=85097627940&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85097627940&partnerID=8YFLogxK |
genre |
permafrost Permafrost and Periglacial Processes |
genre_facet |
permafrost Permafrost and Periglacial Processes |
op_source |
Vandenberghe , J , Kuipers , G , Beunk , F F , Yi , K & van der Wateren , F M 2021 , ' Evidence of permafrost in the Paleoproterozoic (c. 1.9 Ga) of Central Sweden ' , Permafrost and Periglacial Processes , vol. 32 , no. 1 , pp. 169-177 . https://doi.org/10.1002/ppp.2094 |
op_relation |
https://research.vu.nl/en/publications/91382377-10c1-4e14-8a46-bf51ef05100e |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/ppp.2094 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
32 |
container_issue |
1 |
container_start_page |
169 |
op_container_end_page |
177 |
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1810471116812058624 |