Break-up and seafloor spreading domains in the NE Atlantic
An updated magnetic anomaly grid of the NE Atlantic and an improved database of magnetic anomaly and fracture zone identifications allow the kinematic history of this region to be revisited. At break-up time, continental rupture occurred parallel to the Mesozoic rift axes in the south, but obliquely...
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ftoslouniv:oai:www.duo.uio.no:10852/61242 2023-05-15T16:10:53+02:00 Break-up and seafloor spreading domains in the NE Atlantic Gaina, Carmen Nasuti, Aziz Kimbell, Geoffrey S Blischke, Anett 2018-02-15T11:30:50Z http://hdl.handle.net/10852/61242 http://urn.nb.no/URN:NBN:no-63863 https://doi.org/10.1144/SP447.12 EN eng The Geological Society Publishing House http://urn.nb.no/URN:NBN:no-63863 Gaina, Carmen Nasuti, Aziz Kimbell, Geoffrey S Blischke, Anett . Break-up and seafloor spreading domains in the NE Atlantic. Geological Society Special Publication. 2017, 447, 393-417 http://hdl.handle.net/10852/61242 1565484 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Geological Society Special Publication&rft.volume=447&rft.spage=393&rft.date=2017 Geological Society Special Publication 447 393 417 http://dx.doi.org/10.1144/SP447.12 URN:NBN:no-63863 Fulltext https://www.duo.uio.no/bitstream/handle/10852/61242/1/393.full87845.pdf Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/ CC-BY 0305-8719 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2018 ftoslouniv https://doi.org/10.1144/SP447.12 2020-06-21T08:51:49Z An updated magnetic anomaly grid of the NE Atlantic and an improved database of magnetic anomaly and fracture zone identifications allow the kinematic history of this region to be revisited. At break-up time, continental rupture occurred parallel to the Mesozoic rift axes in the south, but obliquely to the previous rifting trend in the north, probably due to the proximity of the Iceland plume at 57–54 Ma. The new oceanic lithosphere age grid is based on 30 isochrons (C) from C24n old (53.93 Ma) to C1n old (0.78 Ma), and documents ridge reorganizations in the SE Lofoten Basin, the Jan Mayen Fracture Zone region, in Iceland and offshore Faroe Islands. Updated continent–ocean boundaries, including the Jan Mayen microcontinent, and detailed kinematics of the Eocene–Present Greenland–Eurasia relative motions are included in this model. Variations in the subduction regime in the NE Pacific could have caused the sudden northwards motion of Greenland and subsequent Eurekan deformation. These events caused seafloor spreading changes in the neighbouring Labrador Sea and a decrease in spreading rates in the NE Atlantic. Boundaries between major oceanic crustal domains were formed when the European Plate changed its absolute motion direction, probably caused by successive adjustments along its southern boundary. Article in Journal/Newspaper Faroe Islands Greenland Iceland Jan Mayen Labrador Sea Lofoten Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Faroe Islands Greenland Jan Mayen Jan Mayen Fracture Zone ENVELOPE(-8.000,-8.000,71.200,71.200) Lofoten Lofoten Basin ENVELOPE(4.000,4.000,70.000,70.000) Pacific Geological Society, London, Special Publications 447 1 393 417 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
An updated magnetic anomaly grid of the NE Atlantic and an improved database of magnetic anomaly and fracture zone identifications allow the kinematic history of this region to be revisited. At break-up time, continental rupture occurred parallel to the Mesozoic rift axes in the south, but obliquely to the previous rifting trend in the north, probably due to the proximity of the Iceland plume at 57–54 Ma. The new oceanic lithosphere age grid is based on 30 isochrons (C) from C24n old (53.93 Ma) to C1n old (0.78 Ma), and documents ridge reorganizations in the SE Lofoten Basin, the Jan Mayen Fracture Zone region, in Iceland and offshore Faroe Islands. Updated continent–ocean boundaries, including the Jan Mayen microcontinent, and detailed kinematics of the Eocene–Present Greenland–Eurasia relative motions are included in this model. Variations in the subduction regime in the NE Pacific could have caused the sudden northwards motion of Greenland and subsequent Eurekan deformation. These events caused seafloor spreading changes in the neighbouring Labrador Sea and a decrease in spreading rates in the NE Atlantic. Boundaries between major oceanic crustal domains were formed when the European Plate changed its absolute motion direction, probably caused by successive adjustments along its southern boundary. |
format |
Article in Journal/Newspaper |
author |
Gaina, Carmen Nasuti, Aziz Kimbell, Geoffrey S Blischke, Anett |
spellingShingle |
Gaina, Carmen Nasuti, Aziz Kimbell, Geoffrey S Blischke, Anett Break-up and seafloor spreading domains in the NE Atlantic |
author_facet |
Gaina, Carmen Nasuti, Aziz Kimbell, Geoffrey S Blischke, Anett |
author_sort |
Gaina, Carmen |
title |
Break-up and seafloor spreading domains in the NE Atlantic |
title_short |
Break-up and seafloor spreading domains in the NE Atlantic |
title_full |
Break-up and seafloor spreading domains in the NE Atlantic |
title_fullStr |
Break-up and seafloor spreading domains in the NE Atlantic |
title_full_unstemmed |
Break-up and seafloor spreading domains in the NE Atlantic |
title_sort |
break-up and seafloor spreading domains in the ne atlantic |
publisher |
The Geological Society Publishing House |
publishDate |
2018 |
url |
http://hdl.handle.net/10852/61242 http://urn.nb.no/URN:NBN:no-63863 https://doi.org/10.1144/SP447.12 |
long_lat |
ENVELOPE(-8.000,-8.000,71.200,71.200) ENVELOPE(4.000,4.000,70.000,70.000) |
geographic |
Faroe Islands Greenland Jan Mayen Jan Mayen Fracture Zone Lofoten Lofoten Basin Pacific |
geographic_facet |
Faroe Islands Greenland Jan Mayen Jan Mayen Fracture Zone Lofoten Lofoten Basin Pacific |
genre |
Faroe Islands Greenland Iceland Jan Mayen Labrador Sea Lofoten |
genre_facet |
Faroe Islands Greenland Iceland Jan Mayen Labrador Sea Lofoten |
op_source |
0305-8719 |
op_relation |
http://urn.nb.no/URN:NBN:no-63863 Gaina, Carmen Nasuti, Aziz Kimbell, Geoffrey S Blischke, Anett . Break-up and seafloor spreading domains in the NE Atlantic. Geological Society Special Publication. 2017, 447, 393-417 http://hdl.handle.net/10852/61242 1565484 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Geological Society Special Publication&rft.volume=447&rft.spage=393&rft.date=2017 Geological Society Special Publication 447 393 417 http://dx.doi.org/10.1144/SP447.12 URN:NBN:no-63863 Fulltext https://www.duo.uio.no/bitstream/handle/10852/61242/1/393.full87845.pdf |
op_rights |
Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1144/SP447.12 |
container_title |
Geological Society, London, Special Publications |
container_volume |
447 |
container_issue |
1 |
container_start_page |
393 |
op_container_end_page |
417 |
_version_ |
1765996012987482112 |