The effects of small-scale convection in the shallow lithosphere of the North Atlantic
SUMMARY Curie point depth can be used as a proxy for plate temperatures. Data from the North Atlantic (10°–50°N) are used here to determine if the observed oscillations and patterns in Curie depths could be a subproduct of small-scale thermal instabilities arising at the bottom of the lithospheric p...
Published in: | Geophysical Journal International |
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Oxford University Press (OUP)
2021
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Online Access: | http://dx.doi.org/10.1093/gji/ggab286 http://academic.oup.com/gji/advance-article-pdf/doi/10.1093/gji/ggab286/39272102/ggab286.pdf http://academic.oup.com/gji/article-pdf/227/3/1512/39743928/ggab286.pdf |
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croxfordunivpr:10.1093/gji/ggab286 2023-12-31T10:20:25+01:00 The effects of small-scale convection in the shallow lithosphere of the North Atlantic Likerman, Jeremías Zlotnik, Sergio Li, Chun-Feng European Union Agencia Nacional de Promoción Científica y Tecnológica Generalitat de Catalunya Ministerio de Ciencia, Innovación y Universidades National Natural Science Foundation of China 2021 http://dx.doi.org/10.1093/gji/ggab286 http://academic.oup.com/gji/advance-article-pdf/doi/10.1093/gji/ggab286/39272102/ggab286.pdf http://academic.oup.com/gji/article-pdf/227/3/1512/39743928/ggab286.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model Geophysical Journal International volume 227, issue 3, page 1512-1522 ISSN 0956-540X 1365-246X Geochemistry and Petrology Geophysics journal-article 2021 croxfordunivpr https://doi.org/10.1093/gji/ggab286 2023-12-06T08:44:39Z SUMMARY Curie point depth can be used as a proxy for plate temperatures. Data from the North Atlantic (10°–50°N) are used here to determine if the observed oscillations and patterns in Curie depths could be a subproduct of small-scale thermal instabilities arising at the bottom of the lithospheric plates. Our numerical models suggest that small-scale convection (SSC) cells could produce thermal perturbations at isotherms as low as the Curie point. These results are compatible with North Atlantic observations in terms of wavelengths (150–300 km), amplitudes (∼4 km) and orientations of the instabilities. Observed Curie-point depth oscillations before the onset (70 to 90 Myr) of SSC could also be linked to other different processes. We suggest that, in the case of the North Atlantic lithosphere, the spreading rate variation and the melt and upwelling could be intricately linked and cause a different pattern of SSC. Article in Journal/Newspaper North Atlantic Oxford University Press (via Crossref) Geophysical Journal International 227 3 1512 1522 |
institution |
Open Polar |
collection |
Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Geochemistry and Petrology Geophysics |
spellingShingle |
Geochemistry and Petrology Geophysics Likerman, Jeremías Zlotnik, Sergio Li, Chun-Feng The effects of small-scale convection in the shallow lithosphere of the North Atlantic |
topic_facet |
Geochemistry and Petrology Geophysics |
description |
SUMMARY Curie point depth can be used as a proxy for plate temperatures. Data from the North Atlantic (10°–50°N) are used here to determine if the observed oscillations and patterns in Curie depths could be a subproduct of small-scale thermal instabilities arising at the bottom of the lithospheric plates. Our numerical models suggest that small-scale convection (SSC) cells could produce thermal perturbations at isotherms as low as the Curie point. These results are compatible with North Atlantic observations in terms of wavelengths (150–300 km), amplitudes (∼4 km) and orientations of the instabilities. Observed Curie-point depth oscillations before the onset (70 to 90 Myr) of SSC could also be linked to other different processes. We suggest that, in the case of the North Atlantic lithosphere, the spreading rate variation and the melt and upwelling could be intricately linked and cause a different pattern of SSC. |
author2 |
European Union Agencia Nacional de Promoción Científica y Tecnológica Generalitat de Catalunya Ministerio de Ciencia, Innovación y Universidades National Natural Science Foundation of China |
format |
Article in Journal/Newspaper |
author |
Likerman, Jeremías Zlotnik, Sergio Li, Chun-Feng |
author_facet |
Likerman, Jeremías Zlotnik, Sergio Li, Chun-Feng |
author_sort |
Likerman, Jeremías |
title |
The effects of small-scale convection in the shallow lithosphere of the North Atlantic |
title_short |
The effects of small-scale convection in the shallow lithosphere of the North Atlantic |
title_full |
The effects of small-scale convection in the shallow lithosphere of the North Atlantic |
title_fullStr |
The effects of small-scale convection in the shallow lithosphere of the North Atlantic |
title_full_unstemmed |
The effects of small-scale convection in the shallow lithosphere of the North Atlantic |
title_sort |
effects of small-scale convection in the shallow lithosphere of the north atlantic |
publisher |
Oxford University Press (OUP) |
publishDate |
2021 |
url |
http://dx.doi.org/10.1093/gji/ggab286 http://academic.oup.com/gji/advance-article-pdf/doi/10.1093/gji/ggab286/39272102/ggab286.pdf http://academic.oup.com/gji/article-pdf/227/3/1512/39743928/ggab286.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Geophysical Journal International volume 227, issue 3, page 1512-1522 ISSN 0956-540X 1365-246X |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/gji/ggab286 |
container_title |
Geophysical Journal International |
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227 |
container_issue |
3 |
container_start_page |
1512 |
op_container_end_page |
1522 |
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1786830780106801152 |