New interpretation of the spreading evolution of the Knipovich Ridge derived from aeromagnetic data
SUMMARY Insights into the spreading evolution of the Knipovich Ridge and development of the Fram Strait are revealed from a recent aeromagnetic survey. As an ultraslow spreading ridge in an oblique system located between the Svalbard–Barents Sea and the Northeast Greenland rifted margins, the dynami...
Published in: | Geophysical Journal International |
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Main Authors: | , , , , |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Oxford University Press (OUP)
2020
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Online Access: | http://dx.doi.org/10.1093/gji/ggaa527 http://academic.oup.com/gji/advance-article-pdf/doi/10.1093/gji/ggaa527/34135546/ggaa527.pdf https://academic.oup.com/gji/article-pdf/224/2/1422/49872885/ggaa527.pdf |
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croxfordunivpr:10.1093/gji/ggaa527 2024-10-13T14:06:18+00:00 New interpretation of the spreading evolution of the Knipovich Ridge derived from aeromagnetic data Dumais, M-A Gernigon, L Olesen, O Johansen, S E Brönner, M Norwegian Petroleum Directorate Geological Survey of Norway 2020 http://dx.doi.org/10.1093/gji/ggaa527 http://academic.oup.com/gji/advance-article-pdf/doi/10.1093/gji/ggaa527/34135546/ggaa527.pdf https://academic.oup.com/gji/article-pdf/224/2/1422/49872885/ggaa527.pdf en eng Oxford University Press (OUP) http://creativecommons.org/licenses/by/4.0/ Geophysical Journal International volume 224, issue 2, page 1422-1428 ISSN 0956-540X 1365-246X journal-article 2020 croxfordunivpr https://doi.org/10.1093/gji/ggaa527 2024-09-17T04:29:04Z SUMMARY Insights into the spreading evolution of the Knipovich Ridge and development of the Fram Strait are revealed from a recent aeromagnetic survey. As an ultraslow spreading ridge in an oblique system located between the Svalbard–Barents Sea and the Northeast Greenland rifted margins, the dynamics of the Knipovich Ridge opening has long been debated. Its 90° bend with the Mohns Ridge, rare in plate tectonics, affects the evolution of the Fram Strait and motivates the study of crustal deformation with this distinctive configuration. We identified magnetic isochrons on either side of the present-day Knipovich Ridge. These magnetic observations considerably reduce the mapped extent of the oceanic domain and question the present understanding of the conjugate rifted margins. Our analysis reveals a failed spreading system before a major spreading reorganization of the Fram Strait gateway around magnetic chron C6 (circa 20 Ma). Article in Journal/Newspaper Barents Sea Fram Strait Greenland Svalbard Oxford University Press Barents Sea Greenland Knipovich Ridge ENVELOPE(7.074,7.074,75.712,75.712) Svalbard Geophysical Journal International 224 2 1422 1428 |
institution |
Open Polar |
collection |
Oxford University Press |
op_collection_id |
croxfordunivpr |
language |
English |
description |
SUMMARY Insights into the spreading evolution of the Knipovich Ridge and development of the Fram Strait are revealed from a recent aeromagnetic survey. As an ultraslow spreading ridge in an oblique system located between the Svalbard–Barents Sea and the Northeast Greenland rifted margins, the dynamics of the Knipovich Ridge opening has long been debated. Its 90° bend with the Mohns Ridge, rare in plate tectonics, affects the evolution of the Fram Strait and motivates the study of crustal deformation with this distinctive configuration. We identified magnetic isochrons on either side of the present-day Knipovich Ridge. These magnetic observations considerably reduce the mapped extent of the oceanic domain and question the present understanding of the conjugate rifted margins. Our analysis reveals a failed spreading system before a major spreading reorganization of the Fram Strait gateway around magnetic chron C6 (circa 20 Ma). |
author2 |
Norwegian Petroleum Directorate Geological Survey of Norway |
format |
Article in Journal/Newspaper |
author |
Dumais, M-A Gernigon, L Olesen, O Johansen, S E Brönner, M |
spellingShingle |
Dumais, M-A Gernigon, L Olesen, O Johansen, S E Brönner, M New interpretation of the spreading evolution of the Knipovich Ridge derived from aeromagnetic data |
author_facet |
Dumais, M-A Gernigon, L Olesen, O Johansen, S E Brönner, M |
author_sort |
Dumais, M-A |
title |
New interpretation of the spreading evolution of the Knipovich Ridge derived from aeromagnetic data |
title_short |
New interpretation of the spreading evolution of the Knipovich Ridge derived from aeromagnetic data |
title_full |
New interpretation of the spreading evolution of the Knipovich Ridge derived from aeromagnetic data |
title_fullStr |
New interpretation of the spreading evolution of the Knipovich Ridge derived from aeromagnetic data |
title_full_unstemmed |
New interpretation of the spreading evolution of the Knipovich Ridge derived from aeromagnetic data |
title_sort |
new interpretation of the spreading evolution of the knipovich ridge derived from aeromagnetic data |
publisher |
Oxford University Press (OUP) |
publishDate |
2020 |
url |
http://dx.doi.org/10.1093/gji/ggaa527 http://academic.oup.com/gji/advance-article-pdf/doi/10.1093/gji/ggaa527/34135546/ggaa527.pdf https://academic.oup.com/gji/article-pdf/224/2/1422/49872885/ggaa527.pdf |
long_lat |
ENVELOPE(7.074,7.074,75.712,75.712) |
geographic |
Barents Sea Greenland Knipovich Ridge Svalbard |
geographic_facet |
Barents Sea Greenland Knipovich Ridge Svalbard |
genre |
Barents Sea Fram Strait Greenland Svalbard |
genre_facet |
Barents Sea Fram Strait Greenland Svalbard |
op_source |
Geophysical Journal International volume 224, issue 2, page 1422-1428 ISSN 0956-540X 1365-246X |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1093/gji/ggaa527 |
container_title |
Geophysical Journal International |
container_volume |
224 |
container_issue |
2 |
container_start_page |
1422 |
op_container_end_page |
1428 |
_version_ |
1812812376134647808 |