Deformation analysis in the Barents Sea in relation to paleogene transpression along the Greenland-Eurasia plate boundary
Late Cretaceous‐Cenozoic contractional structures are widespread in the Barents Sea. While the exact dating of the deformation is unclear, it can only be inferred that the contraction is younger than the early Cretaceous. One likely contractional mechanism is related to Greenland Plate kinematics at...
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ftoslouniv:oai:www.duo.uio.no:10852/83499 2023-05-15T15:38:00+02:00 Deformation analysis in the Barents Sea in relation to paleogene transpression along the Greenland-Eurasia plate boundary Gac, Sebastien Minakov, Alexander Shephard, Grace Faleide, Jan Inge Planke, Sverre 2020-11-07T12:48:45Z http://hdl.handle.net/10852/83499 http://urn.nb.no/URN:NBN:no-86253 https://doi.org/10.1029/2020TC006172 EN eng NFR/223272 http://urn.nb.no/URN:NBN:no-86253 Gac, Sebastien Minakov, Alexander Shephard, Grace Faleide, Jan Inge Planke, Sverre . Deformation analysis in the Barents Sea in relation to paleogene transpression along the Greenland-Eurasia plate boundary. Tectonics. 2020, 39(10) http://hdl.handle.net/10852/83499 1845833 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Tectonics&rft.volume=39&rft.spage=&rft.date=2020 Tectonics 39 10 26 https://doi.org/10.1029/2020TC006172 URN:NBN:no-86253 Fulltext https://www.duo.uio.no/bitstream/handle/10852/83499/1/GacMinakovShephardFaleidePlanke2020.pdf 0278-7407 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2020 ftoslouniv https://doi.org/10.1029/2020TC006172 2021-04-07T22:30:57Z Late Cretaceous‐Cenozoic contractional structures are widespread in the Barents Sea. While the exact dating of the deformation is unclear, it can only be inferred that the contraction is younger than the early Cretaceous. One likely contractional mechanism is related to Greenland Plate kinematics at Paleogene times. We use a thin sheet finite element modeling approach to compute deformation within the Barents Sea in response to the Greenland‐Eurasia relative motions during the Paleogene. The analytical solution for the 3‐D folding of sediments above basement faults is used to assess possibilities for folding. Two existing Greenland Plate kinematic models, differing slightly in the timing, magnitude, and direction of motion, are tested. Results show that the Greenland Plate's general northward motion promotes growing anticlines in the entire Barents Sea shelf. Our numerical models suggest that the fan‐shaped pattern of cylindrical anticlines in the Barents Sea can be associated with the Eurekan deformation concurrent to the initial rifting and early seafloor spreading in the northeast Atlantic. The main contraction phase in the SW Barents Sea coincides with the timing of continental breakup, whereas the peak of deformation predicted for the NW Barents Sea occurred at later times. Svalbard has experienced a prolonged period of compressional deformation. We conclude that Paleogene Greenland Plate kinematics are a likely candidate to explain contractional structures in the Barents Sea Article in Journal/Newspaper Barents Sea Greenland Northeast Atlantic Svalbard Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Barents Sea Greenland Svalbard Tectonics 39 10 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
Late Cretaceous‐Cenozoic contractional structures are widespread in the Barents Sea. While the exact dating of the deformation is unclear, it can only be inferred that the contraction is younger than the early Cretaceous. One likely contractional mechanism is related to Greenland Plate kinematics at Paleogene times. We use a thin sheet finite element modeling approach to compute deformation within the Barents Sea in response to the Greenland‐Eurasia relative motions during the Paleogene. The analytical solution for the 3‐D folding of sediments above basement faults is used to assess possibilities for folding. Two existing Greenland Plate kinematic models, differing slightly in the timing, magnitude, and direction of motion, are tested. Results show that the Greenland Plate's general northward motion promotes growing anticlines in the entire Barents Sea shelf. Our numerical models suggest that the fan‐shaped pattern of cylindrical anticlines in the Barents Sea can be associated with the Eurekan deformation concurrent to the initial rifting and early seafloor spreading in the northeast Atlantic. The main contraction phase in the SW Barents Sea coincides with the timing of continental breakup, whereas the peak of deformation predicted for the NW Barents Sea occurred at later times. Svalbard has experienced a prolonged period of compressional deformation. We conclude that Paleogene Greenland Plate kinematics are a likely candidate to explain contractional structures in the Barents Sea |
format |
Article in Journal/Newspaper |
author |
Gac, Sebastien Minakov, Alexander Shephard, Grace Faleide, Jan Inge Planke, Sverre |
spellingShingle |
Gac, Sebastien Minakov, Alexander Shephard, Grace Faleide, Jan Inge Planke, Sverre Deformation analysis in the Barents Sea in relation to paleogene transpression along the Greenland-Eurasia plate boundary |
author_facet |
Gac, Sebastien Minakov, Alexander Shephard, Grace Faleide, Jan Inge Planke, Sverre |
author_sort |
Gac, Sebastien |
title |
Deformation analysis in the Barents Sea in relation to paleogene transpression along the Greenland-Eurasia plate boundary |
title_short |
Deformation analysis in the Barents Sea in relation to paleogene transpression along the Greenland-Eurasia plate boundary |
title_full |
Deformation analysis in the Barents Sea in relation to paleogene transpression along the Greenland-Eurasia plate boundary |
title_fullStr |
Deformation analysis in the Barents Sea in relation to paleogene transpression along the Greenland-Eurasia plate boundary |
title_full_unstemmed |
Deformation analysis in the Barents Sea in relation to paleogene transpression along the Greenland-Eurasia plate boundary |
title_sort |
deformation analysis in the barents sea in relation to paleogene transpression along the greenland-eurasia plate boundary |
publishDate |
2020 |
url |
http://hdl.handle.net/10852/83499 http://urn.nb.no/URN:NBN:no-86253 https://doi.org/10.1029/2020TC006172 |
geographic |
Barents Sea Greenland Svalbard |
geographic_facet |
Barents Sea Greenland Svalbard |
genre |
Barents Sea Greenland Northeast Atlantic Svalbard |
genre_facet |
Barents Sea Greenland Northeast Atlantic Svalbard |
op_source |
0278-7407 |
op_relation |
NFR/223272 http://urn.nb.no/URN:NBN:no-86253 Gac, Sebastien Minakov, Alexander Shephard, Grace Faleide, Jan Inge Planke, Sverre . Deformation analysis in the Barents Sea in relation to paleogene transpression along the Greenland-Eurasia plate boundary. Tectonics. 2020, 39(10) http://hdl.handle.net/10852/83499 1845833 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Tectonics&rft.volume=39&rft.spage=&rft.date=2020 Tectonics 39 10 26 https://doi.org/10.1029/2020TC006172 URN:NBN:no-86253 Fulltext https://www.duo.uio.no/bitstream/handle/10852/83499/1/GacMinakovShephardFaleidePlanke2020.pdf |
op_doi |
https://doi.org/10.1029/2020TC006172 |
container_title |
Tectonics |
container_volume |
39 |
container_issue |
10 |
_version_ |
1766368684889079808 |