Recent eruption history inferred from eruption ages of the two latest lava flows using multi-dating at Yokodake Volcano, Japan
Abstract Reconstruction of the eruption history of an active volcano is necessary to elucidate its volcanic activity and to assess the probability of its volcanic eruption. Yokodake volcano in central Japan is the only active volcano among the Yatsugatake volcano group. It has effused nine lava flow...
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doaj-24efa137b80b49cb8d2958dcf56bc45a2020-11-25T02:18:23ZengSpringerOpenEarth, Planets and Space1880-59812020-07-0172111510.1186/s40623-020-01220-3Recent eruption history inferred from eruption ages of the two latest lava flows using multi-dating at Yokodake Volcano, JapanHiroya Nitta0Takeshi Saito1Yorinao Shitaoka2Graduate School of Science and Technology, Shinshu UniversityInstitute of Science, Academic Assembly School of Science and Technology, Shinshu UniversityDepartment of Environment System, Faculty of Geo-environmental Science, Rissho UniversityAbstract Reconstruction of the eruption history of an active volcano is necessary to elucidate its volcanic activity and to assess the probability of its volcanic eruption. Yokodake volcano in central Japan is the only active volcano among the Yatsugatake volcano group. It has effused nine lava flows, most of which have not been dated. For this study, we ascertained the eruption ages of the latest lava (Y9) and second most recent lava (Y8) using radiocarbon (14C), thermoluminescence (TL), and paleomagnetic dating methods. Results revealed the eruption ages of the two lava flows and the recent eruption history of Yokodake volcano. Yokodake volcano effused its Y8 lava flow at ca. 3.4 ka, ejected NYk-2 tephra with explosive eruption at ca. 2.4–2.2 ka, and effused the Y9 lava flow associated with Y9-T tephra at ca. 0.6 ka. Magma eruption rates of Yokodake at 34 ky and 3.4 ky were estimated as about 9 × 10−3 km3/ky and 1 × 10−2 km3/ky, indicating a stable eruption rate maintained during the past 34 ky. This result suggests that Yokodake volcano retains some potential for eruption, although the volcanic activity of the Yatsugatake volcanoes (10−1–10−2 km3/ky) has weakened over time.http://link.springer.com/article/10.1186/s40623-020-01220-3Eruption rateHolocene lavaPaleomagnetic datingRadiocarbon (14C) datingThermoluminescence (TL) datingYatsugatake volcanoes |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Hiroya Nitta Takeshi Saito Yorinao Shitaoka |
spellingShingle |
Hiroya Nitta Takeshi Saito Yorinao Shitaoka Recent eruption history inferred from eruption ages of the two latest lava flows using multi-dating at Yokodake Volcano, Japan Earth, Planets and Space Eruption rate Holocene lava Paleomagnetic dating Radiocarbon (14C) dating Thermoluminescence (TL) dating Yatsugatake volcanoes |
author_facet |
Hiroya Nitta Takeshi Saito Yorinao Shitaoka |
author_sort |
Hiroya Nitta |
title |
Recent eruption history inferred from eruption ages of the two latest lava flows using multi-dating at Yokodake Volcano, Japan |
title_short |
Recent eruption history inferred from eruption ages of the two latest lava flows using multi-dating at Yokodake Volcano, Japan |
title_full |
Recent eruption history inferred from eruption ages of the two latest lava flows using multi-dating at Yokodake Volcano, Japan |
title_fullStr |
Recent eruption history inferred from eruption ages of the two latest lava flows using multi-dating at Yokodake Volcano, Japan |
title_full_unstemmed |
Recent eruption history inferred from eruption ages of the two latest lava flows using multi-dating at Yokodake Volcano, Japan |
title_sort |
recent eruption history inferred from eruption ages of the two latest lava flows using multi-dating at yokodake volcano, japan |
publisher |
SpringerOpen |
series |
Earth, Planets and Space |
issn |
1880-5981 |
publishDate |
2020-07-01 |
description |
Abstract Reconstruction of the eruption history of an active volcano is necessary to elucidate its volcanic activity and to assess the probability of its volcanic eruption. Yokodake volcano in central Japan is the only active volcano among the Yatsugatake volcano group. It has effused nine lava flows, most of which have not been dated. For this study, we ascertained the eruption ages of the latest lava (Y9) and second most recent lava (Y8) using radiocarbon (14C), thermoluminescence (TL), and paleomagnetic dating methods. Results revealed the eruption ages of the two lava flows and the recent eruption history of Yokodake volcano. Yokodake volcano effused its Y8 lava flow at ca. 3.4 ka, ejected NYk-2 tephra with explosive eruption at ca. 2.4–2.2 ka, and effused the Y9 lava flow associated with Y9-T tephra at ca. 0.6 ka. Magma eruption rates of Yokodake at 34 ky and 3.4 ky were estimated as about 9 × 10−3 km3/ky and 1 × 10−2 km3/ky, indicating a stable eruption rate maintained during the past 34 ky. This result suggests that Yokodake volcano retains some potential for eruption, although the volcanic activity of the Yatsugatake volcanoes (10−1–10−2 km3/ky) has weakened over time. |
topic |
Eruption rate Holocene lava Paleomagnetic dating Radiocarbon (14C) dating Thermoluminescence (TL) dating Yatsugatake volcanoes |
url |
http://link.springer.com/article/10.1186/s40623-020-01220-3 |
work_keys_str_mv |
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