2017 Fiscal Year Final Research Report
Changes of fault materials and their surrounding environments during seismic cycle
| Project/Area Number |
15K05308
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Geology
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| Research Institution | Tokyo Gakugei University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
SATO Kiminori 東京学芸大学, 教育学部, 教授 (00401448)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 断層物質 / 地震 / 粘土鉱物 / 粉砕 / 非晶質化 / 水 / コンシステンシー |
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| Outline of Final Research Achievements |
The results are summarized as follows. (1)Clay minerals are easily amorphized by dry milling, whereas, water inhibits amorphization. Amorphizaion changes physical properties. (2) It takes as long time as thousand years under a surface environment, for recrystallization of amorphized kaolinite. (3) Smectite has higher liquid limit comparing to the other clay minerals. Even a few tens wt% of smectite effectively increase the liquid limits of clay-water mixture. Physical properties of semctite-water mixtures is important for understaning the behavior of fault in subduction zones, since smectite is major constituent mineral in subduction zone.
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| Free Research Field |
地質学
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