A new Late Cretaceous to Present APWP for Asia and its implications for paleomagnetic shallow inclinations in Central Asia and Cenozoic Eurasian plate deformation
International audience Based on a compilation of 533 Cretaceous to present-day palaeomagnetic poles obtained from both sedimentary and igneous rocks, we present a new analysis of the so-called 'Asian inclination anomaly' and demonstrated the anomaly to be twofold: a 2nd-order anomaly, char...
Published in: | Geophysical Journal International |
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Main Authors: | , , , |
Other Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2013
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Online Access: | https://insu.hal.science/insu-00857217 https://insu.hal.science/insu-00857217/document https://insu.hal.science/insu-00857217/file/Manuscript-2.pdf https://doi.org/10.1093/gji/ggs104 |
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ftobservparis:oai:HAL:insu-00857217v1 |
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openpolar |
institution |
Open Polar |
collection |
Archive de l'Observatoire de Paris (HAL) |
op_collection_id |
ftobservparis |
language |
English |
topic |
Paleomagnetism applied to tectonics intra-plate processes crustal structure Arctic region Asia Europe [SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
Paleomagnetism applied to tectonics intra-plate processes crustal structure Arctic region Asia Europe [SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics [SDE.MCG]Environmental Sciences/Global Changes Cogné, Jean-Pascal Besse, Jean Chen, Yan Hankard, Fatim A new Late Cretaceous to Present APWP for Asia and its implications for paleomagnetic shallow inclinations in Central Asia and Cenozoic Eurasian plate deformation |
topic_facet |
Paleomagnetism applied to tectonics intra-plate processes crustal structure Arctic region Asia Europe [SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics [SDE.MCG]Environmental Sciences/Global Changes |
description |
International audience Based on a compilation of 533 Cretaceous to present-day palaeomagnetic poles obtained from both sedimentary and igneous rocks, we present a new analysis of the so-called 'Asian inclination anomaly' and demonstrated the anomaly to be twofold: a 2nd-order anomaly, characterized by high palaeolatitudes in Indochina and low palaeolatitudes over Tibet and Central Asia, is superimposed on a 1st-order anomaly, characterized by Cenozoic low palaeolatitudes found all over northeastern Asian stable blocks. The analysis herein convincingly shows that the Europe Apparent Polar Wandering Path (APWP) can no longer be used to interpret palaeomagnetic data East of the Urals, including interpretation of Asian Tertiary deformation related to the India-Asia Collision. We, thus, construct a new APWP for East Asia, based on palaeopoles from blocks assumed to be stable. This new APWP is consistent with and reinforces previous analyses of Asian tectonics, such as the age (∼55 Ma) and locus (∼5-10°N) of the Indo-Asian collision, the lateral extrusion of SE Asian continental blocks and the intracontinental shortening in Central Asia. Possible origins of the 1st-order palaeolatitude anomaly are: (1) a geomagnetic origin, due to long-lasting non-dipolar contribution to the magnetic field and (2) a tectonic hypothesis, in which a newly defined East Asia Plate was located ∼10° farther south than expected from the current Europe APWP. Based on a set of six new reconstructions from 90 Ma to present, we show that our tectonic model reconciles geophysical, geological and tectonic observations throughout Eurasia, from Siberia to Europe, including kinematics in the Arctic Ocean, up to northwestern Arctic Alaska. Beyond possible occurrences of non-dipolar field contribution and/or local inclination flattening in the sedimentary data, our model leads us to conclude that Cenozoic tectonics is the dominant contributor to the observed 1st-order ∼10° low palaeolatitude anomaly over Asia during the Tertiary. |
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) Institut des Sciences de la Terre d'Orléans - UMR7327 (ISTO) Bureau de Recherches Géologiques et Minières (BRGM)-Observatoire des Sciences de l'Univers en région Centre (OSUC) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Cogné, Jean-Pascal Besse, Jean Chen, Yan Hankard, Fatim |
author_facet |
Cogné, Jean-Pascal Besse, Jean Chen, Yan Hankard, Fatim |
author_sort |
Cogné, Jean-Pascal |
title |
A new Late Cretaceous to Present APWP for Asia and its implications for paleomagnetic shallow inclinations in Central Asia and Cenozoic Eurasian plate deformation |
title_short |
A new Late Cretaceous to Present APWP for Asia and its implications for paleomagnetic shallow inclinations in Central Asia and Cenozoic Eurasian plate deformation |
title_full |
A new Late Cretaceous to Present APWP for Asia and its implications for paleomagnetic shallow inclinations in Central Asia and Cenozoic Eurasian plate deformation |
title_fullStr |
A new Late Cretaceous to Present APWP for Asia and its implications for paleomagnetic shallow inclinations in Central Asia and Cenozoic Eurasian plate deformation |
title_full_unstemmed |
A new Late Cretaceous to Present APWP for Asia and its implications for paleomagnetic shallow inclinations in Central Asia and Cenozoic Eurasian plate deformation |
title_sort |
new late cretaceous to present apwp for asia and its implications for paleomagnetic shallow inclinations in central asia and cenozoic eurasian plate deformation |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://insu.hal.science/insu-00857217 https://insu.hal.science/insu-00857217/document https://insu.hal.science/insu-00857217/file/Manuscript-2.pdf https://doi.org/10.1093/gji/ggs104 |
genre |
Arctic Arctic Ocean Alaska Siberia |
genre_facet |
Arctic Arctic Ocean Alaska Siberia |
op_source |
ISSN: 0956-540X EISSN: 1365-246X Geophysical Journal International https://insu.hal.science/insu-00857217 Geophysical Journal International, 2013, 192, pp.1000-1024. ⟨10.1093/gji/ggs104⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1093/gji/ggs104 insu-00857217 https://insu.hal.science/insu-00857217 https://insu.hal.science/insu-00857217/document https://insu.hal.science/insu-00857217/file/Manuscript-2.pdf doi:10.1093/gji/ggs104 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1093/gji/ggs104 |
container_title |
Geophysical Journal International |
container_volume |
192 |
container_issue |
3 |
container_start_page |
1000 |
op_container_end_page |
1024 |
_version_ |
1799474521388875776 |
spelling |
ftobservparis:oai:HAL:insu-00857217v1 2024-05-19T07:35:42+00:00 A new Late Cretaceous to Present APWP for Asia and its implications for paleomagnetic shallow inclinations in Central Asia and Cenozoic Eurasian plate deformation Cogné, Jean-Pascal Besse, Jean Chen, Yan Hankard, Fatim 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) Institut des Sciences de la Terre d'Orléans - UMR7327 (ISTO) Bureau de Recherches Géologiques et Minières (BRGM)-Observatoire des Sciences de l'Univers en région Centre (OSUC) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS) 2013 https://insu.hal.science/insu-00857217 https://insu.hal.science/insu-00857217/document https://insu.hal.science/insu-00857217/file/Manuscript-2.pdf https://doi.org/10.1093/gji/ggs104 en eng HAL CCSD Oxford University Press (OUP) info:eu-repo/semantics/altIdentifier/doi/10.1093/gji/ggs104 insu-00857217 https://insu.hal.science/insu-00857217 https://insu.hal.science/insu-00857217/document https://insu.hal.science/insu-00857217/file/Manuscript-2.pdf doi:10.1093/gji/ggs104 info:eu-repo/semantics/OpenAccess ISSN: 0956-540X EISSN: 1365-246X Geophysical Journal International https://insu.hal.science/insu-00857217 Geophysical Journal International, 2013, 192, pp.1000-1024. ⟨10.1093/gji/ggs104⟩ Paleomagnetism applied to tectonics intra-plate processes crustal structure Arctic region Asia Europe [SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2013 ftobservparis https://doi.org/10.1093/gji/ggs104 2024-05-01T23:54:25Z International audience Based on a compilation of 533 Cretaceous to present-day palaeomagnetic poles obtained from both sedimentary and igneous rocks, we present a new analysis of the so-called 'Asian inclination anomaly' and demonstrated the anomaly to be twofold: a 2nd-order anomaly, characterized by high palaeolatitudes in Indochina and low palaeolatitudes over Tibet and Central Asia, is superimposed on a 1st-order anomaly, characterized by Cenozoic low palaeolatitudes found all over northeastern Asian stable blocks. The analysis herein convincingly shows that the Europe Apparent Polar Wandering Path (APWP) can no longer be used to interpret palaeomagnetic data East of the Urals, including interpretation of Asian Tertiary deformation related to the India-Asia Collision. We, thus, construct a new APWP for East Asia, based on palaeopoles from blocks assumed to be stable. This new APWP is consistent with and reinforces previous analyses of Asian tectonics, such as the age (∼55 Ma) and locus (∼5-10°N) of the Indo-Asian collision, the lateral extrusion of SE Asian continental blocks and the intracontinental shortening in Central Asia. Possible origins of the 1st-order palaeolatitude anomaly are: (1) a geomagnetic origin, due to long-lasting non-dipolar contribution to the magnetic field and (2) a tectonic hypothesis, in which a newly defined East Asia Plate was located ∼10° farther south than expected from the current Europe APWP. Based on a set of six new reconstructions from 90 Ma to present, we show that our tectonic model reconciles geophysical, geological and tectonic observations throughout Eurasia, from Siberia to Europe, including kinematics in the Arctic Ocean, up to northwestern Arctic Alaska. Beyond possible occurrences of non-dipolar field contribution and/or local inclination flattening in the sedimentary data, our model leads us to conclude that Cenozoic tectonics is the dominant contributor to the observed 1st-order ∼10° low palaeolatitude anomaly over Asia during the Tertiary. Article in Journal/Newspaper Arctic Arctic Ocean Alaska Siberia Archive de l'Observatoire de Paris (HAL) Geophysical Journal International 192 3 1000 1024 |