Paleomagnetism and paleomagnetic dating to large volcanic bombs: an example from the historical eruption of Azuma–Jododaira volcano, NE Japan
| Title: | Paleomagnetism and paleomagnetic dating to large volcanic bombs: an example from the historical eruption of Azuma–Jododaira volcano, NE Japan |
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| Authors: | Takeshi Hasegawa, Bunta Kikuchi, Shohei Shibata, Yuhji Yamamoto, Takumi Imura, Masao Ban, Kae Tsunematsu, Chie Kusu, Makoto Okada, Tsukasa Ohba |
| Source: | Earth, Planets and Space, Vol 75, Iss 1, Pp 1-12 (2023) |
| Publisher Information: | SpringerOpen, 2023. |
| Publication Year: | 2023 |
| Collection: | LCC:Geography. Anthropology. Recreation LCC:Geodesy LCC:Geology |
| Subject Terms: | Paleomagnetic dating, Volcanic bomb, Rock magnetism, Azuma volcano group, Vulcanian eruptions, Geography. Anthropology. Recreation, Geodesy, QB275-343, Geology, QE1-996.5 |
| More Details: | Abstract Vulcanian activity is one of the most common eruption styles of arc andesitic volcanism on Earth. It ejects and deposits volcanic bombs around the source crater. Although paleomagnetic studies of volcanic bombs are limited, such studies can potentially provide more opportunities for high-resolution paleomagnetic dating of volcanic activity. In this study, paleomagnetic dating was applied to large (> 1 m) volcanic bombs around active craters in the Azuma volcano group, NE Japan. Oriented samples were collected from the interior parts of five large volcanic bombs situated on gentle slopes, a few hundred meters from the source crater. More than six core samples were collected from each bomb and all samples were subjected to a range of rock magnetic experiments, including anisotropy of magnetic susceptibility (AMS) and thermal/alternating field demagnetization (THD/AFD) analyses. The Characteristic Remanent Magnetization (ChRM) directions for specimens from all bombs were well-defined, have small α95 ( |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 1880-5981 |
| Relation: | https://doaj.org/toc/1880-5981 |
| DOI: | 10.1186/s40623-023-01931-3 |
| Access URL: | https://doaj.org/article/5bba0049ec0b4090be3bf82e6af33f9b |
| Accession Number: | edsdoj.5bba0049ec0b4090be3bf82e6af33f9b |
| Database: | Directory of Open Access Journals |
| ISSN: | 18805981 |
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| DOI: | 10.1186/s40623-023-01931-3 |
| Published in: | Earth, Planets and Space |
| Language: | English |