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...
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ftcollegfrance:oai:HAL:in2p3-00684671v1 2024-06-23T07:46:46+00:00 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) 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) CSNSM AS Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM) Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) 2009 https://hal.in2p3.fr/in2p3-00684671 https://hal.in2p3.fr/in2p3-00684671/document https://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 https://hal.in2p3.fr/in2p3-00684671 https://hal.in2p3.fr/in2p3-00684671/document https://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 https://hal.in2p3.fr/in2p3-00684671 Journal of Geophysical Research : Solid Earth, 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 ftcollegfrance https://doi.org/10.1029/2008JB005831 2024-06-13T23:37:29Z 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 Collège de France: HAL Transantarctic Mountains Victoria Land Journal of Geophysical Research 114 B4 |
institution |
Open Polar |
collection |
Collège de France: HAL |
op_collection_id |
ftcollegfrance |
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) 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) CSNSM AS Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM) Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) |
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 |
https://hal.in2p3.fr/in2p3-00684671 https://hal.in2p3.fr/in2p3-00684671/document https://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 https://hal.in2p3.fr/in2p3-00684671 Journal of Geophysical Research : Solid Earth, 2009, 114, pp.B04102. ⟨10.1029/2008JB005831⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2008JB005831 in2p3-00684671 https://hal.in2p3.fr/in2p3-00684671 https://hal.in2p3.fr/in2p3-00684671/document https://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_ |
1802648057512198144 |