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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
北海道大学地球物理学研究報告 = Geophysical bulletin of Hokkaido University >
第84号 >
蘭越町および共和町のボーリングコアに産出する洞爺カルデラ形成噴火噴出物について
This item is licensed under:Creative Commons Attribution-NonCommercial 4.0 International
| Title: | 蘭越町および共和町のボーリングコアに産出する洞爺カルデラ形成噴火噴出物について |
| Other Titles: | Deposits of Toya caldera-forming eruption in boring cores at Kyowa and Rankoshi towns |
| Authors: | 宮坂, 瑞穂1 Browse this author | | 中川, 光弘2 Browse this author →KAKEN DB |
| Authors(alt): | Amma-MIYASAKA, Mizuho1 | | NAKAGAWA, Mitsuhiro2 |
| Issue Date: | 26-Mar-2021 |
| Publisher: | 北海道大学大学院理学研究院 |
| Journal Title: | 北海道大学地球物理学研究報告 |
| Journal Title(alt): | Geophysical bulletin of Hokkaido University |
| Volume: | 84 |
| Start Page: | 1 |
| End Page: | 10 |
| Abstract: | We examined boring cores excavated at Kyowa and Rankoshi towns to clarify stratigraphy and thickness of deposits of Toya caldera-forming eruption. As a result, there exists thick pyroclastic flow deposits of ca. 20m thick in these areas, and we also recognized fine-grained pyroclastic fall and pyroclastic flow deposits of 10cm-thick each below the thick pyroclastic flow deposits at Rankoshi. Glass compositions of these deposits are in the range of deposits of Toya caldera-forming eruption, suggesting that they are all derived from the eruption and upper pyroclastic flow deposits are more voluminous. |
| Rights: | https://creativecommons.org/licenses/by-nc/4.0/ |
| Type: | bulletin (article) |
| URI: | http://hdl.handle.net/2115/80695 |
| Appears in Collections: | 北海道大学地球物理学研究報告 = Geophysical bulletin of Hokkaido University > 第84号
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