A new global Paleocene–Eocene apparent polar wandering path loop by “stacking” magnetostratigraphies: Correlations with high latitude climatic data
International audience A new apparent polar wander path (APWP) from the beginning of the Paleocene (65 Ma) to the middle of the mid-Eocene (42 Ma) is shown to be correlated with polar climatic data of the same time period. Rather than applying the classical method based on analysis of site-based pol...
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ftinsu:oai:HAL:hal-00312034v1 2023-06-18T03:38:04+02:00 A new global Paleocene–Eocene apparent polar wandering path loop by “stacking” magnetostratigraphies: Correlations with high latitude climatic data Moreau, Marie-Gabrielle Besse, Jean Fluteau, Frédéric Greff-Lefftz, Marianne Institut de Physique du Globe de Paris (IPGP) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS) 2007 https://hal.science/hal-00312034 https://doi.org/10.1016/j.epsl.2007.05.025 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.epsl.2007.05.025 hal-00312034 https://hal.science/hal-00312034 doi:10.1016/j.epsl.2007.05.025 ISSN: 0012-821X Earth and Planetary Science Letters https://hal.science/hal-00312034 Earth and Planetary Science Letters, 2007, 260, pp.152-165. ⟨10.1016/j.epsl.2007.05.025⟩ Paleocene Eocene magnetostratigraphy APWP (apparent polar wander path) polar-regions climatic changes [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology info:eu-repo/semantics/article Journal articles 2007 ftinsu https://doi.org/10.1016/j.epsl.2007.05.025 2023-06-05T22:00:28Z International audience A new apparent polar wander path (APWP) from the beginning of the Paleocene (65 Ma) to the middle of the mid-Eocene (42 Ma) is shown to be correlated with polar climatic data of the same time period. Rather than applying the classical method based on analysis of site-based poles, we “stacked” the APWPs obtained from magnetostratigraphies. Magnetostratigraphies have the advantage of displaying an unbroken record of local APWPs through time and, for a magnetozone (defined as the a combination of normal and reversed polarity intervals), the instantaneous poles are synchronous. Seven magnetostratigraphies located on 4 different plates covered sufficient time to be used in the analysis. An average APWP was then determined with respect to age at the magnetozone level for the African plate, which was arbitrarily chosen as a reference frame; virtual geomagnetic poles were transferred onto the African plate using ocean kinematic Euler rotations. The calculated APWP is characterized by a loop with two main changes of direction at magnetozones 26–25 (61.5–56.5 Ma) and 24–22 (56.5–48.6 Ma) distinct at a 95% level of probability, and indistinct poles related to magnetozones 29–27 (65.5–61.5 Ma) and 21–19 (48.6–40.6 Ma). We also show that the implied rapid shift of the lithosphere with respect to the geographic pole, possibly an episode of true polar wander, was coeval with the time evolution of vertebrate occurrence on Ellesmere Island (Canadian Arctic) and with the tree ring growth rate in Western Antarctica. Article in Journal/Newspaper Antarc* Antarctica Arctic Ellesmere Island Institut national des sciences de l'Univers: HAL-INSU Arctic Ellesmere Island Earth and Planetary Science Letters 260 1-2 152 165 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
Paleocene Eocene magnetostratigraphy APWP (apparent polar wander path) polar-regions climatic changes [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology |
spellingShingle |
Paleocene Eocene magnetostratigraphy APWP (apparent polar wander path) polar-regions climatic changes [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology Moreau, Marie-Gabrielle Besse, Jean Fluteau, Frédéric Greff-Lefftz, Marianne A new global Paleocene–Eocene apparent polar wandering path loop by “stacking” magnetostratigraphies: Correlations with high latitude climatic data |
topic_facet |
Paleocene Eocene magnetostratigraphy APWP (apparent polar wander path) polar-regions climatic changes [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology |
description |
International audience A new apparent polar wander path (APWP) from the beginning of the Paleocene (65 Ma) to the middle of the mid-Eocene (42 Ma) is shown to be correlated with polar climatic data of the same time period. Rather than applying the classical method based on analysis of site-based poles, we “stacked” the APWPs obtained from magnetostratigraphies. Magnetostratigraphies have the advantage of displaying an unbroken record of local APWPs through time and, for a magnetozone (defined as the a combination of normal and reversed polarity intervals), the instantaneous poles are synchronous. Seven magnetostratigraphies located on 4 different plates covered sufficient time to be used in the analysis. An average APWP was then determined with respect to age at the magnetozone level for the African plate, which was arbitrarily chosen as a reference frame; virtual geomagnetic poles were transferred onto the African plate using ocean kinematic Euler rotations. The calculated APWP is characterized by a loop with two main changes of direction at magnetozones 26–25 (61.5–56.5 Ma) and 24–22 (56.5–48.6 Ma) distinct at a 95% level of probability, and indistinct poles related to magnetozones 29–27 (65.5–61.5 Ma) and 21–19 (48.6–40.6 Ma). We also show that the implied rapid shift of the lithosphere with respect to the geographic pole, possibly an episode of true polar wander, was coeval with the time evolution of vertebrate occurrence on Ellesmere Island (Canadian Arctic) and with the tree ring growth rate in Western Antarctica. |
author2 |
Institut de Physique du Globe de Paris (IPGP) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Moreau, Marie-Gabrielle Besse, Jean Fluteau, Frédéric Greff-Lefftz, Marianne |
author_facet |
Moreau, Marie-Gabrielle Besse, Jean Fluteau, Frédéric Greff-Lefftz, Marianne |
author_sort |
Moreau, Marie-Gabrielle |
title |
A new global Paleocene–Eocene apparent polar wandering path loop by “stacking” magnetostratigraphies: Correlations with high latitude climatic data |
title_short |
A new global Paleocene–Eocene apparent polar wandering path loop by “stacking” magnetostratigraphies: Correlations with high latitude climatic data |
title_full |
A new global Paleocene–Eocene apparent polar wandering path loop by “stacking” magnetostratigraphies: Correlations with high latitude climatic data |
title_fullStr |
A new global Paleocene–Eocene apparent polar wandering path loop by “stacking” magnetostratigraphies: Correlations with high latitude climatic data |
title_full_unstemmed |
A new global Paleocene–Eocene apparent polar wandering path loop by “stacking” magnetostratigraphies: Correlations with high latitude climatic data |
title_sort |
new global paleocene–eocene apparent polar wandering path loop by “stacking” magnetostratigraphies: correlations with high latitude climatic data |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-00312034 https://doi.org/10.1016/j.epsl.2007.05.025 |
geographic |
Arctic Ellesmere Island |
geographic_facet |
Arctic Ellesmere Island |
genre |
Antarc* Antarctica Arctic Ellesmere Island |
genre_facet |
Antarc* Antarctica Arctic Ellesmere Island |
op_source |
ISSN: 0012-821X Earth and Planetary Science Letters https://hal.science/hal-00312034 Earth and Planetary Science Letters, 2007, 260, pp.152-165. ⟨10.1016/j.epsl.2007.05.025⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.epsl.2007.05.025 hal-00312034 https://hal.science/hal-00312034 doi:10.1016/j.epsl.2007.05.025 |
op_doi |
https://doi.org/10.1016/j.epsl.2007.05.025 |
container_title |
Earth and Planetary Science Letters |
container_volume |
260 |
container_issue |
1-2 |
container_start_page |
152 |
op_container_end_page |
165 |
_version_ |
1769010886305906688 |