A Paleozoic age for the Tunnunik impact structure
International audience We report paleomagnetic directions from the target rocks of the Tunnunik impact structure, as well as from lithic impact breccia dikes that formed during the impact event. The target sedimentary rocks have been remagnetized after impact-related tilting during a reverse polarit...
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Online Access: | https://hal.science/hal-02048190 https://hal.science/hal-02048190/document https://hal.science/hal-02048190/file/Lepaulard-MAPS2019-preprint.pdf https://doi.org/10.1111/maps.13239 |
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ftunivaixmarseil:oai:HAL:hal-02048190v1 2023-12-17T10:30:27+01:00 A Paleozoic age for the Tunnunik impact structure Lepaulard, Camille Gattacceca, Jérôme Swanson-Hysell, Nicholas Quesnel, Yoann Demory, François Osinski, Gordon Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Lawrence Berkeley National Laboratory Berkeley (LBNL) University of Western Ontario (UWO) French Polar Institute IPEV (Institut Paul Emile Victor); Natural Sciences and Engineering Research Council of Canada; Northern Research Supplement program; Industrial Research Chair (IRC) program; Canadian Space Agency; MDA 2019 https://hal.science/hal-02048190 https://hal.science/hal-02048190/document https://hal.science/hal-02048190/file/Lepaulard-MAPS2019-preprint.pdf https://doi.org/10.1111/maps.13239 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1111/maps.13239 hal-02048190 https://hal.science/hal-02048190 https://hal.science/hal-02048190/document https://hal.science/hal-02048190/file/Lepaulard-MAPS2019-preprint.pdf doi:10.1111/maps.13239 PRODINRA: 475665 WOS: 000462911900004 info:eu-repo/semantics/OpenAccess ISSN: 1086-9379 EISSN: 1945-5100 Meteoritics and Planetary Science https://hal.science/hal-02048190 Meteoritics and Planetary Science, 2019, 54 (4), pp.740-751. ⟨10.1111/maps.13239⟩ www.onlinelibrary.wiley.com victoria island polar wander paleomagnetism [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2019 ftunivaixmarseil https://doi.org/10.1111/maps.13239 2023-11-21T23:47:25Z International audience We report paleomagnetic directions from the target rocks of the Tunnunik impact structure, as well as from lithic impact breccia dikes that formed during the impact event. The target sedimentary rocks have been remagnetized after impact-related tilting during a reverse polarity interval. Their magnetization is unblocked up to 350 degrees C. The diabase dikes intruding into these sediments retained their original magnetization which unblocks above 400 degrees C. The impact breccia records a paleomagnetic direction similar to that of the overprints in the target sedimentary rocks. The comparison of the resulting virtual geomagnetic pole for the Tunnunik impact structure with the apparent polar wander path for Laurentia combined with biostratigraphic constraints from the target sedimentary rocks is most consistent with an impact age in the Late Ordovician or Silurian, around 430-450 Ma, soon after the deposition of the youngest impacted sedimentary rocks. Our results from the overprinted sedimentary rocks and diabase dikes imply that the postimpact temperature of the studied rocks was about 350 degrees C. Article in Journal/Newspaper Geomagnetic Pole Victoria Island Aix-Marseille Université: HAL Tilting ENVELOPE(-54.065,-54.065,49.700,49.700) Meteoritics & Planetary Science 54 4 740 751 |
institution |
Open Polar |
collection |
Aix-Marseille Université: HAL |
op_collection_id |
ftunivaixmarseil |
language |
English |
topic |
victoria island polar wander paleomagnetism [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
victoria island polar wander paleomagnetism [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Lepaulard, Camille Gattacceca, Jérôme Swanson-Hysell, Nicholas Quesnel, Yoann Demory, François Osinski, Gordon A Paleozoic age for the Tunnunik impact structure |
topic_facet |
victoria island polar wander paleomagnetism [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience We report paleomagnetic directions from the target rocks of the Tunnunik impact structure, as well as from lithic impact breccia dikes that formed during the impact event. The target sedimentary rocks have been remagnetized after impact-related tilting during a reverse polarity interval. Their magnetization is unblocked up to 350 degrees C. The diabase dikes intruding into these sediments retained their original magnetization which unblocks above 400 degrees C. The impact breccia records a paleomagnetic direction similar to that of the overprints in the target sedimentary rocks. The comparison of the resulting virtual geomagnetic pole for the Tunnunik impact structure with the apparent polar wander path for Laurentia combined with biostratigraphic constraints from the target sedimentary rocks is most consistent with an impact age in the Late Ordovician or Silurian, around 430-450 Ma, soon after the deposition of the youngest impacted sedimentary rocks. Our results from the overprinted sedimentary rocks and diabase dikes imply that the postimpact temperature of the studied rocks was about 350 degrees C. |
author2 |
Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Lawrence Berkeley National Laboratory Berkeley (LBNL) University of Western Ontario (UWO) French Polar Institute IPEV (Institut Paul Emile Victor); Natural Sciences and Engineering Research Council of Canada; Northern Research Supplement program; Industrial Research Chair (IRC) program; Canadian Space Agency; MDA |
format |
Article in Journal/Newspaper |
author |
Lepaulard, Camille Gattacceca, Jérôme Swanson-Hysell, Nicholas Quesnel, Yoann Demory, François Osinski, Gordon |
author_facet |
Lepaulard, Camille Gattacceca, Jérôme Swanson-Hysell, Nicholas Quesnel, Yoann Demory, François Osinski, Gordon |
author_sort |
Lepaulard, Camille |
title |
A Paleozoic age for the Tunnunik impact structure |
title_short |
A Paleozoic age for the Tunnunik impact structure |
title_full |
A Paleozoic age for the Tunnunik impact structure |
title_fullStr |
A Paleozoic age for the Tunnunik impact structure |
title_full_unstemmed |
A Paleozoic age for the Tunnunik impact structure |
title_sort |
paleozoic age for the tunnunik impact structure |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.science/hal-02048190 https://hal.science/hal-02048190/document https://hal.science/hal-02048190/file/Lepaulard-MAPS2019-preprint.pdf https://doi.org/10.1111/maps.13239 |
long_lat |
ENVELOPE(-54.065,-54.065,49.700,49.700) |
geographic |
Tilting |
geographic_facet |
Tilting |
genre |
Geomagnetic Pole Victoria Island |
genre_facet |
Geomagnetic Pole Victoria Island |
op_source |
ISSN: 1086-9379 EISSN: 1945-5100 Meteoritics and Planetary Science https://hal.science/hal-02048190 Meteoritics and Planetary Science, 2019, 54 (4), pp.740-751. ⟨10.1111/maps.13239⟩ www.onlinelibrary.wiley.com |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/maps.13239 hal-02048190 https://hal.science/hal-02048190 https://hal.science/hal-02048190/document https://hal.science/hal-02048190/file/Lepaulard-MAPS2019-preprint.pdf doi:10.1111/maps.13239 PRODINRA: 475665 WOS: 000462911900004 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1111/maps.13239 |
container_title |
Meteoritics & Planetary Science |
container_volume |
54 |
container_issue |
4 |
container_start_page |
740 |
op_container_end_page |
751 |
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1785583413120466944 |