The timing of the Svalbardian Orogeny in Svalbard: a review
In the Late Devonian to earliest Mississippian, Svalbard was affected by a short-lived episode of deformation named the Svalbardian Orogeny. This event resulted in intense folding and thrusting in Devonian sedimentary successions. Deformation stopped prior to the deposition of Carboniferous to Permi...
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Copernicus Publications
2022
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ftdoajarticles:oai:doaj.org/article:3c4b75b4f50f4829bdead53f42623728 2023-05-15T15:13:14+02:00 The timing of the Svalbardian Orogeny in Svalbard: a review J.-B. P. Koehl J. E. A. Marshall G. Lopes 2022-08-01T00:00:00Z https://doi.org/10.5194/se-13-1353-2022 https://doaj.org/article/3c4b75b4f50f4829bdead53f42623728 EN eng Copernicus Publications https://se.copernicus.org/articles/13/1353/2022/se-13-1353-2022.pdf https://doaj.org/toc/1869-9510 https://doaj.org/toc/1869-9529 doi:10.5194/se-13-1353-2022 1869-9510 1869-9529 https://doaj.org/article/3c4b75b4f50f4829bdead53f42623728 Solid Earth, Vol 13, Pp 1353-1370 (2022) Geology QE1-996.5 Stratigraphy QE640-699 article 2022 ftdoajarticles https://doi.org/10.5194/se-13-1353-2022 2022-12-30T23:27:33Z In the Late Devonian to earliest Mississippian, Svalbard was affected by a short-lived episode of deformation named the Svalbardian Orogeny. This event resulted in intense folding and thrusting in Devonian sedimentary successions. Deformation stopped prior to the deposition of Carboniferous to Permian sedimentary strata of the Billefjorden and Gipsdalen groups, which lie unconformably over folded Devonian strata. Later on, presumed Svalbardian structures were reworked during Eurekan tectonism in the early Cenozoic and partly eroded. At present, records of Svalbardian deformation are only preserved in narrow N–S-trending belts in central, northern, western, and southern Spitsbergen. Despite extensive field studies, the timing of the Svalbardian Orogeny is poorly constrained and remains a matter of debate in places because of conflicting ages and because of the complex tectonic history of Svalbard. The present contribution aims at reviewing and discussing all available age constraints for Svalbardian tectonism, including notably palynological, paleontological, and geochronological evidence. This has great implications for the plate tectonic reconstructions of Arctic regions and for the tectonic history of Svalbard. Palynological and paleontological evidence suggest that the Mimerdalen Subgroup is upper Givetian to lower Frasnian (ca. 385–380 Ma) in age and that the Billefjorden Group is mid-Famennian to Upper Mississippian (ca. 365–325 Ma) in age, constraining the Svalbardian event in central and northern Spitsbergen to 383–365 Ma if it ever occurred. Palynological ages indicate that the Adriabukta Formation in southern Spitsbergen is Middle Mississippian and therefore cannot have been involved in the Svalbardian event, thus suggesting that all the deformation in southern Spitsbergen is early Cenozoic in age and that strain-partitioning processes had a major role in localizing deformation in weaker stratigraphic units. The few geochronological age constraints yielding Late Devonian–Mississippian ages in Svalbard ... Article in Journal/Newspaper Arctic Billefjorden Svalbard Spitsbergen Directory of Open Access Journals: DOAJ Articles Arctic Svalbard Billefjorden ENVELOPE(16.417,16.417,78.563,78.563) Gipsdalen ENVELOPE(16.877,16.877,78.505,78.505) Mimerdalen ENVELOPE(16.277,16.277,78.647,78.647) Adriabukta ENVELOPE(16.191,16.191,76.986,76.986) Solid Earth 13 8 1353 1370 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Geology QE1-996.5 Stratigraphy QE640-699 |
spellingShingle |
Geology QE1-996.5 Stratigraphy QE640-699 J.-B. P. Koehl J. E. A. Marshall G. Lopes The timing of the Svalbardian Orogeny in Svalbard: a review |
topic_facet |
Geology QE1-996.5 Stratigraphy QE640-699 |
description |
In the Late Devonian to earliest Mississippian, Svalbard was affected by a short-lived episode of deformation named the Svalbardian Orogeny. This event resulted in intense folding and thrusting in Devonian sedimentary successions. Deformation stopped prior to the deposition of Carboniferous to Permian sedimentary strata of the Billefjorden and Gipsdalen groups, which lie unconformably over folded Devonian strata. Later on, presumed Svalbardian structures were reworked during Eurekan tectonism in the early Cenozoic and partly eroded. At present, records of Svalbardian deformation are only preserved in narrow N–S-trending belts in central, northern, western, and southern Spitsbergen. Despite extensive field studies, the timing of the Svalbardian Orogeny is poorly constrained and remains a matter of debate in places because of conflicting ages and because of the complex tectonic history of Svalbard. The present contribution aims at reviewing and discussing all available age constraints for Svalbardian tectonism, including notably palynological, paleontological, and geochronological evidence. This has great implications for the plate tectonic reconstructions of Arctic regions and for the tectonic history of Svalbard. Palynological and paleontological evidence suggest that the Mimerdalen Subgroup is upper Givetian to lower Frasnian (ca. 385–380 Ma) in age and that the Billefjorden Group is mid-Famennian to Upper Mississippian (ca. 365–325 Ma) in age, constraining the Svalbardian event in central and northern Spitsbergen to 383–365 Ma if it ever occurred. Palynological ages indicate that the Adriabukta Formation in southern Spitsbergen is Middle Mississippian and therefore cannot have been involved in the Svalbardian event, thus suggesting that all the deformation in southern Spitsbergen is early Cenozoic in age and that strain-partitioning processes had a major role in localizing deformation in weaker stratigraphic units. The few geochronological age constraints yielding Late Devonian–Mississippian ages in Svalbard ... |
format |
Article in Journal/Newspaper |
author |
J.-B. P. Koehl J. E. A. Marshall G. Lopes |
author_facet |
J.-B. P. Koehl J. E. A. Marshall G. Lopes |
author_sort |
J.-B. P. Koehl |
title |
The timing of the Svalbardian Orogeny in Svalbard: a review |
title_short |
The timing of the Svalbardian Orogeny in Svalbard: a review |
title_full |
The timing of the Svalbardian Orogeny in Svalbard: a review |
title_fullStr |
The timing of the Svalbardian Orogeny in Svalbard: a review |
title_full_unstemmed |
The timing of the Svalbardian Orogeny in Svalbard: a review |
title_sort |
timing of the svalbardian orogeny in svalbard: a review |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/se-13-1353-2022 https://doaj.org/article/3c4b75b4f50f4829bdead53f42623728 |
long_lat |
ENVELOPE(16.417,16.417,78.563,78.563) ENVELOPE(16.877,16.877,78.505,78.505) ENVELOPE(16.277,16.277,78.647,78.647) ENVELOPE(16.191,16.191,76.986,76.986) |
geographic |
Arctic Svalbard Billefjorden Gipsdalen Mimerdalen Adriabukta |
geographic_facet |
Arctic Svalbard Billefjorden Gipsdalen Mimerdalen Adriabukta |
genre |
Arctic Billefjorden Svalbard Spitsbergen |
genre_facet |
Arctic Billefjorden Svalbard Spitsbergen |
op_source |
Solid Earth, Vol 13, Pp 1353-1370 (2022) |
op_relation |
https://se.copernicus.org/articles/13/1353/2022/se-13-1353-2022.pdf https://doaj.org/toc/1869-9510 https://doaj.org/toc/1869-9529 doi:10.5194/se-13-1353-2022 1869-9510 1869-9529 https://doaj.org/article/3c4b75b4f50f4829bdead53f42623728 |
op_doi |
https://doi.org/10.5194/se-13-1353-2022 |
container_title |
Solid Earth |
container_volume |
13 |
container_issue |
8 |
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1353 |
op_container_end_page |
1370 |
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