Deep Mantle Component and Continental Crust Remobilization in the Source of Vesteris Seamount, East Greenland Margin
Abstract Vesteris Seamount is a large Quaternary intraplate submarine volcano in the SW Greenland Sea, about 1,000 km NE of Iceland and 300 km NW of the Mohn's spreading ridge, whose mode of formation remains unsolved. We present geochemical data for new samples dredged from the Vesteris edific...
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Language: | English |
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The Geochemical Society
2024
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Online Access: | http://hdl.handle.net/10852/107055 https://doi.org/10.1029/2023GC011196 |
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ftoslouniv:oai:www.duo.uio.no:10852/107055 2024-02-11T10:03:26+01:00 Deep Mantle Component and Continental Crust Remobilization in the Source of Vesteris Seamount, East Greenland Margin ENEngelskEnglishDeep Mantle Component and Continental Crust Remobilization in the Source of Vesteris Seamount, East Greenland Margin Belosa, Lea Callegaro, Sara Meyzen, Christine M Gaina, Carmen Polteau, Stephane Bizimis, Michael Mazzini, Adriano 2024-01-11T01:42:35Z http://hdl.handle.net/10852/107055 https://doi.org/10.1029/2023GC011196 EN eng The Geochemical Society NFR/288299 Belosa, Lea Callegaro, Sara Meyzen, Christine M Gaina, Carmen Polteau, Stephane Bizimis, Michael Mazzini, Adriano . Deep Mantle Component and Continental Crust Remobilization in the Source of Vesteris Seamount, East Greenland Margin. Geochemistry Geophysics Geosystems. 2024, 25, e2023GC011196 http://hdl.handle.net/10852/107055 2224277 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Geochemistry Geophysics Geosystems&rft.volume=25&rft.spage=e2023GC011196&rft.date=2024 Geochemistry Geophysics Geosystems 25 1 e2023GC011196 https://doi.org/10.1029/2023GC011196 Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ 1525-2027 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2024 ftoslouniv https://doi.org/10.1029/2023GC011196 2024-01-24T23:39:44Z Abstract Vesteris Seamount is a large Quaternary intraplate submarine volcano in the SW Greenland Sea, about 1,000 km NE of Iceland and 300 km NW of the Mohn's spreading ridge, whose mode of formation remains unsolved. We present geochemical data for new samples dredged from the Vesteris edifice, including major, trace elements and Sr‐Nd‐Pb‐Hf isotopes. The isotopic characteristics of the alkaline lavas, covering the basanite/tephrite to benmoreite range, indicate the involvement of depleted and enriched mantle components. The source is dominated by the depleted mantle (85%–90%) and a deep enriched component possibly supplied by the Iceland Plume (IP) (10%–15%). Additional source enrichment was due to recycled crust and sub‐continental lithospheric mantle, as suggested by Hf isotopes (0.283147 ± 0.000005) measured for the first time in Vesteris lavas and by a decoupling in Pb isotopes evidenced by relatively low‐radiogenic 207 Pb/ 204 Pb (15.510) and high‐radiogenic 208 Pb/ 204 Pb (38.554) with respect to the Northern Hemisphere Reference Line. We interpret the geochemical results using existing knowledge about the regional lithospheric and upper mantle structure. Our findings suggest that a deep (ca. 420–320 km) mantle anomaly, with seismological characteristics of the Iceland mantle plume, extends from East Greenland to the north of Jan Mayen Fracture Zone. The regional lithospheric thinning toward the Greenland Basin enabled the melting events that produced the Vesteris seamount. This lateral NNE‐directed flow lobe of the Iceland plume may have carved and transferred enriched components from the continental lithospheric margin of Greenland north of Scoresby Sund toward the Vesteris source. Article in Journal/Newspaper East Greenland Greenland Greenland Sea Iceland Jan Mayen Scoresby Sund Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Greenland Jan Mayen Sund ENVELOPE(13.644,13.644,66.207,66.207) Scoresby ENVELOPE(162.750,162.750,-66.567,-66.567) Scoresby Sund ENVELOPE(-24.387,-24.387,70.476,70.476) Jan Mayen Fracture Zone ENVELOPE(-8.000,-8.000,71.200,71.200) Greenland Basin ENVELOPE(-5.000,-5.000,73.500,73.500) Vesteris Seamount ENVELOPE(-9.113,-9.113,73.519,73.519) Geochemistry, Geophysics, Geosystems 25 1 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
Abstract Vesteris Seamount is a large Quaternary intraplate submarine volcano in the SW Greenland Sea, about 1,000 km NE of Iceland and 300 km NW of the Mohn's spreading ridge, whose mode of formation remains unsolved. We present geochemical data for new samples dredged from the Vesteris edifice, including major, trace elements and Sr‐Nd‐Pb‐Hf isotopes. The isotopic characteristics of the alkaline lavas, covering the basanite/tephrite to benmoreite range, indicate the involvement of depleted and enriched mantle components. The source is dominated by the depleted mantle (85%–90%) and a deep enriched component possibly supplied by the Iceland Plume (IP) (10%–15%). Additional source enrichment was due to recycled crust and sub‐continental lithospheric mantle, as suggested by Hf isotopes (0.283147 ± 0.000005) measured for the first time in Vesteris lavas and by a decoupling in Pb isotopes evidenced by relatively low‐radiogenic 207 Pb/ 204 Pb (15.510) and high‐radiogenic 208 Pb/ 204 Pb (38.554) with respect to the Northern Hemisphere Reference Line. We interpret the geochemical results using existing knowledge about the regional lithospheric and upper mantle structure. Our findings suggest that a deep (ca. 420–320 km) mantle anomaly, with seismological characteristics of the Iceland mantle plume, extends from East Greenland to the north of Jan Mayen Fracture Zone. The regional lithospheric thinning toward the Greenland Basin enabled the melting events that produced the Vesteris seamount. This lateral NNE‐directed flow lobe of the Iceland plume may have carved and transferred enriched components from the continental lithospheric margin of Greenland north of Scoresby Sund toward the Vesteris source. |
format |
Article in Journal/Newspaper |
author |
Belosa, Lea Callegaro, Sara Meyzen, Christine M Gaina, Carmen Polteau, Stephane Bizimis, Michael Mazzini, Adriano |
spellingShingle |
Belosa, Lea Callegaro, Sara Meyzen, Christine M Gaina, Carmen Polteau, Stephane Bizimis, Michael Mazzini, Adriano Deep Mantle Component and Continental Crust Remobilization in the Source of Vesteris Seamount, East Greenland Margin |
author_facet |
Belosa, Lea Callegaro, Sara Meyzen, Christine M Gaina, Carmen Polteau, Stephane Bizimis, Michael Mazzini, Adriano |
author_sort |
Belosa, Lea |
title |
Deep Mantle Component and Continental Crust Remobilization in the Source of Vesteris Seamount, East Greenland Margin |
title_short |
Deep Mantle Component and Continental Crust Remobilization in the Source of Vesteris Seamount, East Greenland Margin |
title_full |
Deep Mantle Component and Continental Crust Remobilization in the Source of Vesteris Seamount, East Greenland Margin |
title_fullStr |
Deep Mantle Component and Continental Crust Remobilization in the Source of Vesteris Seamount, East Greenland Margin |
title_full_unstemmed |
Deep Mantle Component and Continental Crust Remobilization in the Source of Vesteris Seamount, East Greenland Margin |
title_sort |
deep mantle component and continental crust remobilization in the source of vesteris seamount, east greenland margin |
publisher |
The Geochemical Society |
publishDate |
2024 |
url |
http://hdl.handle.net/10852/107055 https://doi.org/10.1029/2023GC011196 |
long_lat |
ENVELOPE(13.644,13.644,66.207,66.207) ENVELOPE(162.750,162.750,-66.567,-66.567) ENVELOPE(-24.387,-24.387,70.476,70.476) ENVELOPE(-8.000,-8.000,71.200,71.200) ENVELOPE(-5.000,-5.000,73.500,73.500) ENVELOPE(-9.113,-9.113,73.519,73.519) |
geographic |
Greenland Jan Mayen Sund Scoresby Scoresby Sund Jan Mayen Fracture Zone Greenland Basin Vesteris Seamount |
geographic_facet |
Greenland Jan Mayen Sund Scoresby Scoresby Sund Jan Mayen Fracture Zone Greenland Basin Vesteris Seamount |
genre |
East Greenland Greenland Greenland Sea Iceland Jan Mayen Scoresby Sund |
genre_facet |
East Greenland Greenland Greenland Sea Iceland Jan Mayen Scoresby Sund |
op_source |
1525-2027 |
op_relation |
NFR/288299 Belosa, Lea Callegaro, Sara Meyzen, Christine M Gaina, Carmen Polteau, Stephane Bizimis, Michael Mazzini, Adriano . Deep Mantle Component and Continental Crust Remobilization in the Source of Vesteris Seamount, East Greenland Margin. Geochemistry Geophysics Geosystems. 2024, 25, e2023GC011196 http://hdl.handle.net/10852/107055 2224277 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Geochemistry Geophysics Geosystems&rft.volume=25&rft.spage=e2023GC011196&rft.date=2024 Geochemistry Geophysics Geosystems 25 1 e2023GC011196 https://doi.org/10.1029/2023GC011196 |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1029/2023GC011196 |
container_title |
Geochemistry, Geophysics, Geosystems |
container_volume |
25 |
container_issue |
1 |
_version_ |
1790599668759003136 |