Magnetic susceptibility of volcanic ash: an evaluation in the Shinmoendake 2017-2018 eruption
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- Priyambodo Ekky Reno
- Tohoku University
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- Mujin Mayumi
- Tohoku University
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- Nakamura Michihiko
- Tohoku University
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- Sugaya Sarina
- Tohoku University
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- Toma Tomomori
- Tohoku University
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- Matsumoto Keiko
- Geological Survey of Japan, AIST
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- Takahashi Kazunori
- Oyo Corporation
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- Imura Ryusuke
- Kagoshima University
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- Shimano Taketo
- Tokoha University
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- Hiramine Hiroto
- Kajiki Junior High School
Abstract
In volcanic rocks, amount of magnetite chiefly changes their magnetic susceptibility behavior. The modal composition of magnetite presumably decreases in post-magmatic processes such as high-temperature oxidation and hydrothermal alteration. This study suggests that magnetic susceptibility is a possible indicator to identify post-magmatic processes and increased proportion of juvenile components when a pure eruption magmatic phase is approaching, on condition that the modal compositions of magnetite phenocryst are constant.
Journal
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- Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences
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Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences 2018 (0), 5-, 2018
Japan Association of Mineralogical Sciences
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Details 詳細情報について
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- CRID
- 1390002184863410688
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- NII Article ID
- 130007786181
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed