Micromagnetic Tomography for Paleomagnetism and Rock-Magnetism
| العنوان: | Micromagnetic Tomography for Paleomagnetism and Rock-Magnetism |
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| المؤلفون: | de Groot, Lennart V., Fabian, Karl, Béguin, Annemarieke, Kosters, Martha E., Cortés-Ortuño, David, Fu, Roger R., Jansen, Chloë M.L., Harrison, Richard J., van Leeuwen, Tristan, Barnhoorn, Auke, Paleomagnetism, Sub Mathematical Modeling, Mathematical Modeling |
| المساهمون: | Paleomagnetism, Sub Mathematical Modeling, Mathematical Modeling, de Groot, Lennart V [0000-0002-1151-5662], Fabian, Karl [0000-0002-3504-3292], Béguin, Annemarieke [0000-0002-6196-4247], Kosters, Martha E [0000-0001-5035-1034], Cortés-Ortuño, David [0000-0003-3799-3141], Fu, Roger R [0000-0003-3635-2676], Harrison, Richard J [0000-0003-3469-762X], van Leeuwen, Tristan [0000-0002-8794-6426], Barnhoorn, Auke [0000-0002-3074-5535], Apollo - University of Cambridge Repository |
| المصدر: | JGR Solid Earth, 126(10) Journal of Geophysical Research: Solid Earth Journal of Geophysical Research: Solid Earth, 126(10), 1 |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Paleomagnetism, Computational geophysics, microCT, 010504 meteorology & atmospheric sciences, Sample (material), Geophysics, rock‐magnetism, 010502 geochemistry & geophysics, scanning magnetometry, 01 natural sciences, Rock magnetism, Magnetic field, Physics::Geophysics, rock-magnetism, Potential field inversion, Magnetization, Earth's magnetic field, Geochemistry and Petrology, Space and Planetary Science, Earth and Planetary Sciences (miscellaneous), Tomography, micromagnetic tomography, 0105 earth and related environmental sciences |
| الوصف: | Our understanding of the past behavior of the geomagnetic field arises from magnetic signals stored in geological materials, e.g., (volcanic) rocks. Bulk rock samples, however, often contain magnetic grains that differ in chemistry, size, and shape; some of them record the Earth's magnetic field well, others are unreliable. The presence of a small amount of adverse behaved magnetic grains in a sample may already obscure important information on the past state of the geomagnetic field. Recently it was shown that it is possible to determine magnetizations of individual grains in a sample by combining X-ray computed tomography and magnetic surface scanning measurements. Here we establish this new Micromagnetic Tomography (MMT) technique and make it suitable for use with different magnetic scanning techniques, and for both synthetic and natural samples. We acquired reliable magnetic directions by selecting subsets of grains in a synthetic sample, and we obtained rock-magnetic information of individual grains in a volcanic sample. This illustrates that MMT opens up entirely new venues of paleomagnetic and rock-magnetic research. MMT's unique ability to determine the magnetization of individual grains in a nondestructive way allows for a systematic analysis of how geological materials record and retain information on the past state of the Earth's magnetic field. Moreover, by interpreting only the contributions of known magnetically well-behaved grains in a sample, MMT has the potential to unlock paleomagnetic information from even the most complex, crucial, or valuable recorders that current methods are unable to recover. |
| وصف الملف: | application/pdf; text/xml |
| تدمد: | 2169-9313 2169-9356 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce71b8afcfdae5be9464fdae038de50aTest https://pubmed.ncbi.nlm.nih.gov/35866100Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....ce71b8afcfdae5be9464fdae038de50a |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 21699313 21699356 |
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