Crustal structure and origin of the Eggvin Bank west of Jan Mayen, NE Atlantic
The Eggvin Bank, located between the Jan Mayen Island and Greenland, is an unusually shallow area containing several submarine volcanic peaks, confined by two transforms on the Northern Kolbeinsey Ridge (NKR). We represent P and S wave velocity models for the Eggvin Bank based on an Ocean Bottom Sei...
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ftoslouniv:oai:www.duo.uio.no:10852/60985 2023-05-15T16:29:51+02:00 Crustal structure and origin of the Eggvin Bank west of Jan Mayen, NE Atlantic Tan, Pingchuan Breivik, Asbjørn Johan Trønnes, Reidar G Mjelde, Rolf Azuma, Ryosuke Eide, Sigurd 2017-01-05T11:45:24Z http://hdl.handle.net/10852/60985 http://urn.nb.no/URN:NBN:no-63610 https://doi.org/10.1002/2016JB013495 EN eng American Geopgysical Union (AGU) Tan, Pingchuan (2018) Magmatic development of the Jan Mayen - East Greenland area, NE Atlantic. Doctoral thesis http://hdl.handle.net/10852/65330 http://hdl.handle.net/10852/65330 NFR/223272 http://urn.nb.no/URN:NBN:no-63610 Tan, Pingchuan Breivik, Asbjørn Johan Trønnes, Reidar G Mjelde, Rolf Azuma, Ryosuke Eide, Sigurd . Crustal structure and origin of the Eggvin Bank west of Jan Mayen, NE Atlantic. Journal of Geophysical Research - Solid Earth. 2017, 122(1), 43-62 http://hdl.handle.net/10852/60985 1421511 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Geophysical Research - Solid Earth&rft.volume=122&rft.spage=43&rft.date=2017 Journal of Geophysical Research - Solid Earth 122 1 43 62 http://dx.doi.org/10.1002/2016JB013495 URN:NBN:no-63610 Fulltext https://www.duo.uio.no/bitstream/handle/10852/60985/4/Tan_et_al-2017-Journal_of_Geophysical_Research__Solid_Earth.pdf 2169-9313 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2017 ftoslouniv https://doi.org/10.1002/2016JB013495 2020-06-21T08:51:40Z The Eggvin Bank, located between the Jan Mayen Island and Greenland, is an unusually shallow area containing several submarine volcanic peaks, confined by two transforms on the Northern Kolbeinsey Ridge (NKR). We represent P and S wave velocity models for the Eggvin Bank based on an Ocean Bottom Seismometer profile collected in 2011, showing igneous crustal thickness variations from 8 km to 13 km. A 2–5 km increase is associated with two separate 20–30 km wide segments under the main seamounts. The oceanic crust has three layers: upper crust (L2A: 2.8–4.8 km/s), middle crust (L2B: 5.5–6.5 km/s), and lower crust (L3: 6.7–7.35 km/s). Both the thick layer 2(A/B) and the high ratio of layer 2(A/B) thickness to total crustal thickness indicate that secondary, intraplate magmatism built the seamounts of the Eggvin Bank. The seamount in the north where the crust is thickest has a flat top indicating subaerial exposure but is deeper than those with rounded tops in the south and is therefore probably older. Comparing lower crustal seismic velocity with crustal thickness also indicates that the degree of mantle melting may be higher in the north than in the south. An enriched mantle source presently feeds the NKR magmatism and probably influenced the Eggvin Bank development also at earlier times. To what extent the Eggvin Bank has been influenced by the Iceland plume is uncertain, both an enriched mantle component and elevated mantle temperature may have played a role at different times and locations. ©2016. American Geophysical Union. All Rights Reserved. Article in Journal/Newspaper Greenland Iceland Jan Mayen Jan Mayen Island Kolbeinsey Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Flat Top ENVELOPE(-137.387,-137.387,63.225,63.225) Greenland Jan Mayen Kolbeinsey ENVELOPE(-18.687,-18.687,67.149,67.149) Kolbeinsey Ridge ENVELOPE(-16.917,-16.917,68.833,68.833) Journal of Geophysical Research: Solid Earth 122 1 43 62 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
The Eggvin Bank, located between the Jan Mayen Island and Greenland, is an unusually shallow area containing several submarine volcanic peaks, confined by two transforms on the Northern Kolbeinsey Ridge (NKR). We represent P and S wave velocity models for the Eggvin Bank based on an Ocean Bottom Seismometer profile collected in 2011, showing igneous crustal thickness variations from 8 km to 13 km. A 2–5 km increase is associated with two separate 20–30 km wide segments under the main seamounts. The oceanic crust has three layers: upper crust (L2A: 2.8–4.8 km/s), middle crust (L2B: 5.5–6.5 km/s), and lower crust (L3: 6.7–7.35 km/s). Both the thick layer 2(A/B) and the high ratio of layer 2(A/B) thickness to total crustal thickness indicate that secondary, intraplate magmatism built the seamounts of the Eggvin Bank. The seamount in the north where the crust is thickest has a flat top indicating subaerial exposure but is deeper than those with rounded tops in the south and is therefore probably older. Comparing lower crustal seismic velocity with crustal thickness also indicates that the degree of mantle melting may be higher in the north than in the south. An enriched mantle source presently feeds the NKR magmatism and probably influenced the Eggvin Bank development also at earlier times. To what extent the Eggvin Bank has been influenced by the Iceland plume is uncertain, both an enriched mantle component and elevated mantle temperature may have played a role at different times and locations. ©2016. American Geophysical Union. All Rights Reserved. |
format |
Article in Journal/Newspaper |
author |
Tan, Pingchuan Breivik, Asbjørn Johan Trønnes, Reidar G Mjelde, Rolf Azuma, Ryosuke Eide, Sigurd |
spellingShingle |
Tan, Pingchuan Breivik, Asbjørn Johan Trønnes, Reidar G Mjelde, Rolf Azuma, Ryosuke Eide, Sigurd Crustal structure and origin of the Eggvin Bank west of Jan Mayen, NE Atlantic |
author_facet |
Tan, Pingchuan Breivik, Asbjørn Johan Trønnes, Reidar G Mjelde, Rolf Azuma, Ryosuke Eide, Sigurd |
author_sort |
Tan, Pingchuan |
title |
Crustal structure and origin of the Eggvin Bank west of Jan Mayen, NE Atlantic |
title_short |
Crustal structure and origin of the Eggvin Bank west of Jan Mayen, NE Atlantic |
title_full |
Crustal structure and origin of the Eggvin Bank west of Jan Mayen, NE Atlantic |
title_fullStr |
Crustal structure and origin of the Eggvin Bank west of Jan Mayen, NE Atlantic |
title_full_unstemmed |
Crustal structure and origin of the Eggvin Bank west of Jan Mayen, NE Atlantic |
title_sort |
crustal structure and origin of the eggvin bank west of jan mayen, ne atlantic |
publisher |
American Geopgysical Union (AGU) |
publishDate |
2017 |
url |
http://hdl.handle.net/10852/60985 http://urn.nb.no/URN:NBN:no-63610 https://doi.org/10.1002/2016JB013495 |
long_lat |
ENVELOPE(-137.387,-137.387,63.225,63.225) ENVELOPE(-18.687,-18.687,67.149,67.149) ENVELOPE(-16.917,-16.917,68.833,68.833) |
geographic |
Flat Top Greenland Jan Mayen Kolbeinsey Kolbeinsey Ridge |
geographic_facet |
Flat Top Greenland Jan Mayen Kolbeinsey Kolbeinsey Ridge |
genre |
Greenland Iceland Jan Mayen Jan Mayen Island Kolbeinsey |
genre_facet |
Greenland Iceland Jan Mayen Jan Mayen Island Kolbeinsey |
op_source |
2169-9313 |
op_relation |
Tan, Pingchuan (2018) Magmatic development of the Jan Mayen - East Greenland area, NE Atlantic. Doctoral thesis http://hdl.handle.net/10852/65330 http://hdl.handle.net/10852/65330 NFR/223272 http://urn.nb.no/URN:NBN:no-63610 Tan, Pingchuan Breivik, Asbjørn Johan Trønnes, Reidar G Mjelde, Rolf Azuma, Ryosuke Eide, Sigurd . Crustal structure and origin of the Eggvin Bank west of Jan Mayen, NE Atlantic. Journal of Geophysical Research - Solid Earth. 2017, 122(1), 43-62 http://hdl.handle.net/10852/60985 1421511 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Geophysical Research - Solid Earth&rft.volume=122&rft.spage=43&rft.date=2017 Journal of Geophysical Research - Solid Earth 122 1 43 62 http://dx.doi.org/10.1002/2016JB013495 URN:NBN:no-63610 Fulltext https://www.duo.uio.no/bitstream/handle/10852/60985/4/Tan_et_al-2017-Journal_of_Geophysical_Research__Solid_Earth.pdf |
op_doi |
https://doi.org/10.1002/2016JB013495 |
container_title |
Journal of Geophysical Research: Solid Earth |
container_volume |
122 |
container_issue |
1 |
container_start_page |
43 |
op_container_end_page |
62 |
_version_ |
1766019554040872960 |