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研究内容

氏名 Wildan Nur Hamzah
所属 Graduate of School of International Resource Sciences Department of Geosciences, Geotechnology & Material Engineering for Resources, Akita University
研究者番号
研究分野 Petrology volcanology
会議でのプレゼンテーション
研究テーマ名称 Magmatic Processes which Triggered Mt. Ciremai Explosive Eruption
研究テーマ概要 This work provides new insight into the magmatic processes that triggered the eruption style of Mt. Ciremai explosive eruption. The tephra layer information of each eruption episode including non-historical and historical eruptions is gotten from a geological map, volcano-stratigraphy, and eruption history reports. The detailed stratigraphic log records the internal structure of the tephra layer for each episode and takes the sample of each tephra layer of each episode. The approach in this study involves a detailed stratigraphic log (different color, thickness, grain size, and internal structure), grain size sieving, grain content analysis (material assemblage and shape), and a description of the petrological variation of juvenile and non-juvenile material. It observes the texture and material proportion using a polarizer microscope and BSE-image from SEM (mineral fraction, bubble fraction, melt fraction, crystal size distribution, bubble size distribution, crystal density, bubble density, and broken crystal shape distribution). The chemical studies analyze the whole rocks of juvenile material by XRF approach and mineral chemistry by EPMA approach. Integration of textural analysis with mineral chemistry study is used to explain magmatic processes in the volcanic conduit system that triggered the explosive eruption episode.
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