2012 Fiscal Year Final Research Report
High resolution analysis of evolution of magma chambers in island arc andesitic volcano - an example of Zao volcano past 2,000 years -
Project/Area Number |
22540487
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Petrology/Mineralogy/Science of ore deposit
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Research Institution | Yamagata University |
Principal Investigator |
BAN Masao 山形大学, 理学部, 教授 (50208724)
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Co-Investigator(Kenkyū-buntansha) |
KAGASHIMA Shinichi 山形大学, 理学部, 准教授 (70361243)
ISHIKAWA Naoto 京都大学, 大学院・人間環境学研究科, 教授 (30202964)
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Project Period (FY) |
2010 – 2012
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Keywords | マグマ / 火成岩 |
Research Abstract |
Revealing the evolution of magma chamber is one ofthe main subjects in the field of igneous petrology. Advance of petrologic technique allows us to solve this subject with a high resolution. Detailed petrologic studies on recent eruption events of volcanoes have revealed that the feeding system beneath island arc volcanoes fundamentally comprises shallower felsic and deeper mafic magma chamber. Sometimes, eruptions are triggered by the injection of mafic magmas into shallower chambers. Detailed studies of single or series of eruptive events have revealed there are several patterns of the chamber processes that result from the injections. The magma evolution course in the past ca. 2,000 years in Zao volcano, NE Japan was examined in this study. The results is also important in predicting future eruptions.
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[Presentation] Magma Feeding System for Historical Lavas of Chokai Volcano, NE Japan2012
Author(s)
Ban, M., Nakamura, J., Hayashi, S., Ohba, T., Shuto, K
Organizer
2012 AOGS -AGU (WPGM) Joint Assembly
Place of Presentation
Resorts World Convention Centre, Singapore
Year and Date
2012-08-15
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[Presentation] Interaction Between Hydrothermal Systems and ascending magma beneath Chokai volcano, Japan2011
Author(s)
Ohba, T., Hayashi, S., Ban, M., Kondo, A., Suzuki, S. et al.
Organizer
during the last 3, 000 years: implication from characterization of volcanic ash, 2011 IUGG General Assembly
Place of Presentation
メルボルン国際会議場
Year and Date
2011-07-05
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