A review of the NE Atlantic conjugate margins based on seismic refraction data
The NE Atlantic region evolved through several rift episodes, leading to break-up in the Eocene that was associated with voluminous magmatism along the conjugate margins of East Greenland and NW Europe. Existing seismic refraction data provide good constraints on the overall tectonic development of...
Published in: | Geological Society, London, Special Publications |
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Geological Society of London
2017
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Online Access: | http://nora.nerc.ac.uk/id/eprint/514883/ https://nora.nerc.ac.uk/id/eprint/514883/1/171.full.pd.pdf https://doi.org/10.1144/SP447.9 |
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ftnerc:oai:nora.nerc.ac.uk:514883 2023-05-15T15:38:59+02:00 A review of the NE Atlantic conjugate margins based on seismic refraction data Funck, Thomas Erlendsson, Ögmundur Geissler, Wolfram H. Gradmann, Sofie Kimbell, Geoffrey S. McDermott, Kenneth Petersen, Uni K. Péron-Pinvidic, G. Hopper, J. Stoker, M.S. 2017 text http://nora.nerc.ac.uk/id/eprint/514883/ https://nora.nerc.ac.uk/id/eprint/514883/1/171.full.pd.pdf https://doi.org/10.1144/SP447.9 en eng Geological Society of London https://nora.nerc.ac.uk/id/eprint/514883/1/171.full.pd.pdf Funck, Thomas; Erlendsson, Ögmundur; Geissler, Wolfram H.; Gradmann, Sofie; Kimbell, Geoffrey S.; McDermott, Kenneth; Petersen, Uni K. 2017 A review of the NE Atlantic conjugate margins based on seismic refraction data. In: Péron-Pinvidic, G.; Hopper, J.; Stoker, M.S., (eds.) The NE Atlantic Region: a reappraisal of crustal structure, tectonostratigraphy and magmatic evolution. London, UK, Geological Society of London, 171-205. (Geological Society Special Publication, 447). cc_by CC-BY Publication - Book Section PeerReviewed 2017 ftnerc https://doi.org/10.1144/SP447.9 2023-02-04T19:43:44Z The NE Atlantic region evolved through several rift episodes, leading to break-up in the Eocene that was associated with voluminous magmatism along the conjugate margins of East Greenland and NW Europe. Existing seismic refraction data provide good constraints on the overall tectonic development of the margins, despite data gaps at the NE Greenland shear margin and the southern Jan Mayen microcontinent. The maximum thickness of the initial oceanic crust is 40 km at the Greenland–Iceland–Faroe Ridge, but decreases with increasing distance to the Iceland plume. High-velocity lower crust interpreted as magmatic underplating or sill intrusions is observed along most margins but disappears north of the East Greenland Ridge and the Lofoten margin, with the exception of the Vestbakken Volcanic Province at the SW Barents Sea margin. South of the narrow Lofoten margin, the European side is characterized by wide margins. The opposite trend is seen in Greenland, with a wide margin in the NE and narrow margins elsewhere. The thin crust beneath the basins is generally underlain by rocks with velocities of >7 km s−1 interpreted as serpentinized mantle in the Porcupine and southern Rockall basins; while off Norway, alternative interpretations such as eclogite bodies and underplating are also discussed. Book Part Barents Sea East Greenland Greenland Iceland Jan Mayen Lofoten Natural Environment Research Council: NERC Open Research Archive Barents Sea Lofoten Greenland Norway Jan Mayen Vestbakken ENVELOPE(16.250,16.250,74.417,74.417) East Greenland Ridge ENVELOPE(2.557,2.557,75.182,75.182) Geological Society, London, Special Publications 447 1 171 205 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
The NE Atlantic region evolved through several rift episodes, leading to break-up in the Eocene that was associated with voluminous magmatism along the conjugate margins of East Greenland and NW Europe. Existing seismic refraction data provide good constraints on the overall tectonic development of the margins, despite data gaps at the NE Greenland shear margin and the southern Jan Mayen microcontinent. The maximum thickness of the initial oceanic crust is 40 km at the Greenland–Iceland–Faroe Ridge, but decreases with increasing distance to the Iceland plume. High-velocity lower crust interpreted as magmatic underplating or sill intrusions is observed along most margins but disappears north of the East Greenland Ridge and the Lofoten margin, with the exception of the Vestbakken Volcanic Province at the SW Barents Sea margin. South of the narrow Lofoten margin, the European side is characterized by wide margins. The opposite trend is seen in Greenland, with a wide margin in the NE and narrow margins elsewhere. The thin crust beneath the basins is generally underlain by rocks with velocities of >7 km s−1 interpreted as serpentinized mantle in the Porcupine and southern Rockall basins; while off Norway, alternative interpretations such as eclogite bodies and underplating are also discussed. |
author2 |
Péron-Pinvidic, G. Hopper, J. Stoker, M.S. |
format |
Book Part |
author |
Funck, Thomas Erlendsson, Ögmundur Geissler, Wolfram H. Gradmann, Sofie Kimbell, Geoffrey S. McDermott, Kenneth Petersen, Uni K. |
spellingShingle |
Funck, Thomas Erlendsson, Ögmundur Geissler, Wolfram H. Gradmann, Sofie Kimbell, Geoffrey S. McDermott, Kenneth Petersen, Uni K. A review of the NE Atlantic conjugate margins based on seismic refraction data |
author_facet |
Funck, Thomas Erlendsson, Ögmundur Geissler, Wolfram H. Gradmann, Sofie Kimbell, Geoffrey S. McDermott, Kenneth Petersen, Uni K. |
author_sort |
Funck, Thomas |
title |
A review of the NE Atlantic conjugate margins based on seismic refraction data |
title_short |
A review of the NE Atlantic conjugate margins based on seismic refraction data |
title_full |
A review of the NE Atlantic conjugate margins based on seismic refraction data |
title_fullStr |
A review of the NE Atlantic conjugate margins based on seismic refraction data |
title_full_unstemmed |
A review of the NE Atlantic conjugate margins based on seismic refraction data |
title_sort |
review of the ne atlantic conjugate margins based on seismic refraction data |
publisher |
Geological Society of London |
publishDate |
2017 |
url |
http://nora.nerc.ac.uk/id/eprint/514883/ https://nora.nerc.ac.uk/id/eprint/514883/1/171.full.pd.pdf https://doi.org/10.1144/SP447.9 |
long_lat |
ENVELOPE(16.250,16.250,74.417,74.417) ENVELOPE(2.557,2.557,75.182,75.182) |
geographic |
Barents Sea Lofoten Greenland Norway Jan Mayen Vestbakken East Greenland Ridge |
geographic_facet |
Barents Sea Lofoten Greenland Norway Jan Mayen Vestbakken East Greenland Ridge |
genre |
Barents Sea East Greenland Greenland Iceland Jan Mayen Lofoten |
genre_facet |
Barents Sea East Greenland Greenland Iceland Jan Mayen Lofoten |
op_relation |
https://nora.nerc.ac.uk/id/eprint/514883/1/171.full.pd.pdf Funck, Thomas; Erlendsson, Ögmundur; Geissler, Wolfram H.; Gradmann, Sofie; Kimbell, Geoffrey S.; McDermott, Kenneth; Petersen, Uni K. 2017 A review of the NE Atlantic conjugate margins based on seismic refraction data. In: Péron-Pinvidic, G.; Hopper, J.; Stoker, M.S., (eds.) The NE Atlantic Region: a reappraisal of crustal structure, tectonostratigraphy and magmatic evolution. London, UK, Geological Society of London, 171-205. (Geological Society Special Publication, 447). |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1144/SP447.9 |
container_title |
Geological Society, London, Special Publications |
container_volume |
447 |
container_issue |
1 |
container_start_page |
171 |
op_container_end_page |
205 |
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1766370431961399296 |