Estimating Paleointensities From Chemical Remanent Magnetizations of Magnetite Using Non‐Heating Methods
Abstract Many meteorites experienced aqueous alteration on their parent body. During this process, magnetite usually forms and acquires a chemical remanent magnetization (CRM) if growing in the presence of a magnetic field. The epoch of aqueous alteration on planetesimals encompasses the lifetime of...
Published in: | Journal of Geophysical Research: Planets |
---|---|
Main Authors: | , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2023
|
Subjects: | |
Online Access: | https://hal.science/hal-04241905 https://hal.science/hal-04241905/document https://hal.science/hal-04241905/file/JGR%20Planets%20-%202023%20-%20Maurel%20-%20Estimating%20Paleointensities%20From%20Chemical%20Remanent%20Magnetizations%20of%20Magnetite%20Using.pdf https://doi.org/10.1029/2023JE007779 |
id |
ftunivaixmarseil:oai:HAL:hal-04241905v1 |
---|---|
record_format |
openpolar |
spelling |
ftunivaixmarseil:oai:HAL:hal-04241905v1 2023-12-17T10:50:52+01:00 Estimating Paleointensities From Chemical Remanent Magnetizations of Magnetite Using Non‐Heating Methods Maurel, C. Gattacceca, J. Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-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)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) 2023-06 https://hal.science/hal-04241905 https://hal.science/hal-04241905/document https://hal.science/hal-04241905/file/JGR%20Planets%20-%202023%20-%20Maurel%20-%20Estimating%20Paleointensities%20From%20Chemical%20Remanent%20Magnetizations%20of%20Magnetite%20Using.pdf https://doi.org/10.1029/2023JE007779 en eng HAL CCSD Wiley-Blackwell info:eu-repo/semantics/altIdentifier/doi/10.1029/2023JE007779 hal-04241905 https://hal.science/hal-04241905 https://hal.science/hal-04241905/document https://hal.science/hal-04241905/file/JGR%20Planets%20-%202023%20-%20Maurel%20-%20Estimating%20Paleointensities%20From%20Chemical%20Remanent%20Magnetizations%20of%20Magnetite%20Using.pdf doi:10.1029/2023JE007779 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 2169-9097 EISSN: 2169-9100 Journal of Geophysical Research. Planets https://hal.science/hal-04241905 Journal of Geophysical Research. Planets, 2023, 128 (6), ⟨10.1029/2023JE007779⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2023 ftunivaixmarseil https://doi.org/10.1029/2023JE007779 2023-11-21T23:36:07Z Abstract Many meteorites experienced aqueous alteration on their parent body. During this process, magnetite usually forms and acquires a chemical remanent magnetization (CRM) if growing in the presence of a magnetic field. The epoch of aqueous alteration on planetesimals encompasses the lifetime of the solar nebula. Therefore, magnetite‐bearing meteorites are potential sources of invaluable data regarding the intensity of the solar nebula magnetic field and its influence on planetary accretion. The major limitation encountered in meteorite paleomagnetic studies is the lack of an empirical law relating a CRM characterized using non‐heating methods and the magnetizing field intensity. This issue is usually bypassed using the empirical law for non‐heating methods calibrated for thermoremanent magnetizations (TRM), resulting in poorly constrained paleointensities. Here, we determine such an empirical law through a series of CRM acquisition experiments. Magnetite is grown in weakly magnetic sedimentary rocks and synthetic samples in a magnetic field while heated at 350°C for 5 hr in an argon atmosphere. All samples exhibit a high‐coercivity magnetization parallel and proportional to the field applied, identified as a CRM carried by magnetite. We determine the CRM empirical law by retrieving the applied field intensity using non‐heating methods. The empirical coefficients differ from the TRM ones by a factor of 1.9–3.2 depending on the method. We use these coefficients to revisit the paleointensities published for the CM chondrite Murchison and the C2 ungrouped Tagish Lake. This empirical law opens the door to the study of numerous magnetite‐bearing meteorites potentially carrying a CRM. Article in Journal/Newspaper Tagish Aix-Marseille Université: HAL Murchison ENVELOPE(144.250,144.250,-67.317,-67.317) Tagish ENVELOPE(-134.272,-134.272,60.313,60.313) Tagish Lake ENVELOPE(-134.233,-134.233,59.717,59.717) Journal of Geophysical Research: Planets 128 6 |
institution |
Open Polar |
collection |
Aix-Marseille Université: HAL |
op_collection_id |
ftunivaixmarseil |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] |
spellingShingle |
[SDU]Sciences of the Universe [physics] Maurel, C. Gattacceca, J. Estimating Paleointensities From Chemical Remanent Magnetizations of Magnetite Using Non‐Heating Methods |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
Abstract Many meteorites experienced aqueous alteration on their parent body. During this process, magnetite usually forms and acquires a chemical remanent magnetization (CRM) if growing in the presence of a magnetic field. The epoch of aqueous alteration on planetesimals encompasses the lifetime of the solar nebula. Therefore, magnetite‐bearing meteorites are potential sources of invaluable data regarding the intensity of the solar nebula magnetic field and its influence on planetary accretion. The major limitation encountered in meteorite paleomagnetic studies is the lack of an empirical law relating a CRM characterized using non‐heating methods and the magnetizing field intensity. This issue is usually bypassed using the empirical law for non‐heating methods calibrated for thermoremanent magnetizations (TRM), resulting in poorly constrained paleointensities. Here, we determine such an empirical law through a series of CRM acquisition experiments. Magnetite is grown in weakly magnetic sedimentary rocks and synthetic samples in a magnetic field while heated at 350°C for 5 hr in an argon atmosphere. All samples exhibit a high‐coercivity magnetization parallel and proportional to the field applied, identified as a CRM carried by magnetite. We determine the CRM empirical law by retrieving the applied field intensity using non‐heating methods. The empirical coefficients differ from the TRM ones by a factor of 1.9–3.2 depending on the method. We use these coefficients to revisit the paleointensities published for the CM chondrite Murchison and the C2 ungrouped Tagish Lake. This empirical law opens the door to the study of numerous magnetite‐bearing meteorites potentially carrying a CRM. |
author2 |
Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-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)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
format |
Article in Journal/Newspaper |
author |
Maurel, C. Gattacceca, J. |
author_facet |
Maurel, C. Gattacceca, J. |
author_sort |
Maurel, C. |
title |
Estimating Paleointensities From Chemical Remanent Magnetizations of Magnetite Using Non‐Heating Methods |
title_short |
Estimating Paleointensities From Chemical Remanent Magnetizations of Magnetite Using Non‐Heating Methods |
title_full |
Estimating Paleointensities From Chemical Remanent Magnetizations of Magnetite Using Non‐Heating Methods |
title_fullStr |
Estimating Paleointensities From Chemical Remanent Magnetizations of Magnetite Using Non‐Heating Methods |
title_full_unstemmed |
Estimating Paleointensities From Chemical Remanent Magnetizations of Magnetite Using Non‐Heating Methods |
title_sort |
estimating paleointensities from chemical remanent magnetizations of magnetite using non‐heating methods |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04241905 https://hal.science/hal-04241905/document https://hal.science/hal-04241905/file/JGR%20Planets%20-%202023%20-%20Maurel%20-%20Estimating%20Paleointensities%20From%20Chemical%20Remanent%20Magnetizations%20of%20Magnetite%20Using.pdf https://doi.org/10.1029/2023JE007779 |
long_lat |
ENVELOPE(144.250,144.250,-67.317,-67.317) ENVELOPE(-134.272,-134.272,60.313,60.313) ENVELOPE(-134.233,-134.233,59.717,59.717) |
geographic |
Murchison Tagish Tagish Lake |
geographic_facet |
Murchison Tagish Tagish Lake |
genre |
Tagish |
genre_facet |
Tagish |
op_source |
ISSN: 2169-9097 EISSN: 2169-9100 Journal of Geophysical Research. Planets https://hal.science/hal-04241905 Journal of Geophysical Research. Planets, 2023, 128 (6), ⟨10.1029/2023JE007779⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2023JE007779 hal-04241905 https://hal.science/hal-04241905 https://hal.science/hal-04241905/document https://hal.science/hal-04241905/file/JGR%20Planets%20-%202023%20-%20Maurel%20-%20Estimating%20Paleointensities%20From%20Chemical%20Remanent%20Magnetizations%20of%20Magnetite%20Using.pdf doi:10.1029/2023JE007779 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2023JE007779 |
container_title |
Journal of Geophysical Research: Planets |
container_volume |
128 |
container_issue |
6 |
_version_ |
1785575965476257792 |