| タイトルヨミ | マスミズハラ カサイリュウ タイセキブツ ニ オケル ガンセキガクテキ オヨビ チキュウ カガクテキ ケンキュウ
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| 日本語以外のタイトル | Petrology and geochemistry of pyroclastic rocks from the Masumizuhara pyroclastic flow deposit
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| ファイル | |
| 言語 |
英語
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| 属性 |
論文
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| 著者 |
西田 華菜
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| 内容記述（抄録等） | Daisen Volcano is located in the San-in district, southwest Japan. The volcano is a large composite cone with several amalgamated eruptive centres which are Hiruzen, Karasugasen, and Misen. A thick apron of pyroclastic material surrounds the entire volcanic complex. The erupted material from Daisen volcano is divided into an Older group and a Younger group. The Masumizuhara pyroclastic flow deposits are sourced from the Misen lava dome and are part of the Younger group. Pyroclastic rocks were analysed by X-ray fluorescence spectrometry (XRF) and all samples are classified as adakitic, medium-K dacites. Mineral and glass composition was determined by electron probe microanalyzer (EPMA) to evaluate magma storage conditions and to characterize the magmatic system of Mt. Daisen during its youngest eruptive cycle. Pressure, temperature, water content and oxygen fugacity range from 126 to 201 MPa, 843 to 864 ˚C, 5.0 to 7.7 wt % and +1.6 to +2.0 log units above the nickel-nickel oxide (NNO) buffer, respectively.
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| 主題 | Daisen Volcano
Misen Lava Dome
Masumizuhara Block and Ash flows
Thermobarometry
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| 掲載誌名 |
島根大学地球科学研究報告
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| 巻 | 37
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| 開始ページ | 11
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| 終了ページ | 19
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| ISSN | 13439774
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| 発行日 | 2020-03-25
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| 資料タイプ |
紀要論文
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| ファイル形式 |
PDF
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| 著者版/出版社版 |
出版社版
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| 業績ID | e37846
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| 部局 |
総合理工学部
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| 他の一覧 |
