Magnetic properties of micrometeorites
Most micrometeorites are strongly magnetic: the signal of a single micrometeorite may exceed the signal of a weakly magnetized standard sediment sample. Micrometeorites contain abundant magnetite, mostly produced by high-temperature oxidation during atmospheric entry. In this study, we carried out m...
Published in: | Journal of Geophysical Research |
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Main Authors: | , , , , , , |
Other Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2009
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Online Access: | http://hal.in2p3.fr/in2p3-00684671 http://hal.in2p3.fr/in2p3-00684671/document http://hal.in2p3.fr/in2p3-00684671/file/2008JB005831.pdf https://doi.org/10.1029/2008JB005831 |
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ftccsdartic:oai:HAL:in2p3-00684671v1 |
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Open Polar |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
language |
English |
topic |
ATMOSPHERIC ENTRY BLUE-ICE TRANSANTARCTIC MOUNTAINS COSMIC SPHERULES STONY METEORITES ACCRETION RATE VICTORIA LAND CLASSIFICATION ANTARCTICA CHONDRITES [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] [PHYS.ASTR.EP]Physics [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] |
spellingShingle |
ATMOSPHERIC ENTRY BLUE-ICE TRANSANTARCTIC MOUNTAINS COSMIC SPHERULES STONY METEORITES ACCRETION RATE VICTORIA LAND CLASSIFICATION ANTARCTICA CHONDRITES [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] [PHYS.ASTR.EP]Physics [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] Suavet, C. Gattacceca, J. Rochette, P. Perchiazzi, N. Folco, L. Duprat, J. Harvey, R.P. Magnetic properties of micrometeorites |
topic_facet |
ATMOSPHERIC ENTRY BLUE-ICE TRANSANTARCTIC MOUNTAINS COSMIC SPHERULES STONY METEORITES ACCRETION RATE VICTORIA LAND CLASSIFICATION ANTARCTICA CHONDRITES [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] [PHYS.ASTR.EP]Physics [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] |
description |
Most micrometeorites are strongly magnetic: the signal of a single micrometeorite may exceed the signal of a weakly magnetized standard sediment sample. Micrometeorites contain abundant magnetite, mostly produced by high-temperature oxidation during atmospheric entry. In this study, we carried out measurements on 520 micrometeorites (505 melted cosmic spherules, 6 partially melted scoriaceous micrometeorites, and 9 unmelted micrometeorites). The natural remanent magnetization and the saturation isothermal remanent magnetization have been measured, followed by alternating field or thermal stepwise demagnetization. The natural remanent magnetization is in the range of 0.4-300 A/m for cosmic spherules; it is a stable thermal remanent magnetization acquired by quenching in the Earth's magnetic field. The range is 3.8-16 A/m for scoriaceous micrometeorites and 78-525 A/m for unmelted micrometeorites, which may have preserved a preatmospheric magnetization. The magnetic susceptibility is in the range of 0.005-2.9 SI for cosmic spherules and is in the range of 0.06-0.12 SI for scoriaceous and unmelted micrometeorites. Temperature-dependent susceptibility analyses and thermal demagnetization indicate that magnetite is cation substituted in cosmic spherules. Different populations of magnetite grains may have different degrees of cation substitution within a single micrometeorite. Anisotropy of magnetic susceptibility measurements indicates that micrometeorites are strongly anisotropic (anisotropy degree > 15%) and that most have oblate fabrics consistent with the parallel habit of magnetite in barred olivine cosmic spherules. |
author2 |
Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Collège de France (CdF (institution))-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA) CSNSM AS Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM) Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11) |
format |
Article in Journal/Newspaper |
author |
Suavet, C. Gattacceca, J. Rochette, P. Perchiazzi, N. Folco, L. Duprat, J. Harvey, R.P. |
author_facet |
Suavet, C. Gattacceca, J. Rochette, P. Perchiazzi, N. Folco, L. Duprat, J. Harvey, R.P. |
author_sort |
Suavet, C. |
title |
Magnetic properties of micrometeorites |
title_short |
Magnetic properties of micrometeorites |
title_full |
Magnetic properties of micrometeorites |
title_fullStr |
Magnetic properties of micrometeorites |
title_full_unstemmed |
Magnetic properties of micrometeorites |
title_sort |
magnetic properties of micrometeorites |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
http://hal.in2p3.fr/in2p3-00684671 http://hal.in2p3.fr/in2p3-00684671/document http://hal.in2p3.fr/in2p3-00684671/file/2008JB005831.pdf https://doi.org/10.1029/2008JB005831 |
geographic |
Transantarctic Mountains Victoria Land |
geographic_facet |
Transantarctic Mountains Victoria Land |
genre |
Antarc* Antarctica Victoria Land |
genre_facet |
Antarc* Antarctica Victoria Land |
op_source |
ISSN: 2169-9313 EISSN: 2169-9356 Journal of Geophysical Research : Solid Earth http://hal.in2p3.fr/in2p3-00684671 Journal of Geophysical Research : Solid Earth, American Geophysical Union, 2009, 114, pp.B04102. ⟨10.1029/2008JB005831⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2008JB005831 in2p3-00684671 http://hal.in2p3.fr/in2p3-00684671 http://hal.in2p3.fr/in2p3-00684671/document http://hal.in2p3.fr/in2p3-00684671/file/2008JB005831.pdf doi:10.1029/2008JB005831 |
op_rights |
http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2008JB005831 |
container_title |
Journal of Geophysical Research |
container_volume |
114 |
container_issue |
B4 |
_version_ |
1766265427534544896 |
spelling |
ftccsdartic:oai:HAL:in2p3-00684671v1 2023-05-15T13:57:39+02:00 Magnetic properties of micrometeorites Suavet, C. Gattacceca, J. Rochette, P. Perchiazzi, N. Folco, L. Duprat, J. Harvey, R.P. Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Collège de France (CdF (institution))-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA) CSNSM AS Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM) Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11) 2009 http://hal.in2p3.fr/in2p3-00684671 http://hal.in2p3.fr/in2p3-00684671/document http://hal.in2p3.fr/in2p3-00684671/file/2008JB005831.pdf https://doi.org/10.1029/2008JB005831 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2008JB005831 in2p3-00684671 http://hal.in2p3.fr/in2p3-00684671 http://hal.in2p3.fr/in2p3-00684671/document http://hal.in2p3.fr/in2p3-00684671/file/2008JB005831.pdf doi:10.1029/2008JB005831 http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess ISSN: 2169-9313 EISSN: 2169-9356 Journal of Geophysical Research : Solid Earth http://hal.in2p3.fr/in2p3-00684671 Journal of Geophysical Research : Solid Earth, American Geophysical Union, 2009, 114, pp.B04102. ⟨10.1029/2008JB005831⟩ ATMOSPHERIC ENTRY BLUE-ICE TRANSANTARCTIC MOUNTAINS COSMIC SPHERULES STONY METEORITES ACCRETION RATE VICTORIA LAND CLASSIFICATION ANTARCTICA CHONDRITES [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] [PHYS.ASTR.EP]Physics [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] info:eu-repo/semantics/article Journal articles 2009 ftccsdartic https://doi.org/10.1029/2008JB005831 2021-10-30T22:22:04Z Most micrometeorites are strongly magnetic: the signal of a single micrometeorite may exceed the signal of a weakly magnetized standard sediment sample. Micrometeorites contain abundant magnetite, mostly produced by high-temperature oxidation during atmospheric entry. In this study, we carried out measurements on 520 micrometeorites (505 melted cosmic spherules, 6 partially melted scoriaceous micrometeorites, and 9 unmelted micrometeorites). The natural remanent magnetization and the saturation isothermal remanent magnetization have been measured, followed by alternating field or thermal stepwise demagnetization. The natural remanent magnetization is in the range of 0.4-300 A/m for cosmic spherules; it is a stable thermal remanent magnetization acquired by quenching in the Earth's magnetic field. The range is 3.8-16 A/m for scoriaceous micrometeorites and 78-525 A/m for unmelted micrometeorites, which may have preserved a preatmospheric magnetization. The magnetic susceptibility is in the range of 0.005-2.9 SI for cosmic spherules and is in the range of 0.06-0.12 SI for scoriaceous and unmelted micrometeorites. Temperature-dependent susceptibility analyses and thermal demagnetization indicate that magnetite is cation substituted in cosmic spherules. Different populations of magnetite grains may have different degrees of cation substitution within a single micrometeorite. Anisotropy of magnetic susceptibility measurements indicates that micrometeorites are strongly anisotropic (anisotropy degree > 15%) and that most have oblate fabrics consistent with the parallel habit of magnetite in barred olivine cosmic spherules. Article in Journal/Newspaper Antarc* Antarctica Victoria Land Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Transantarctic Mountains Victoria Land Journal of Geophysical Research 114 B4 |