Identification of recent fault activity by measurement of hydration thickness using quartz from faults
| Project/Area Number |
25350500
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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 |
Natural disaster / Disaster prevention science
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| Research Institution | Japan Atomic Energy Agency |
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Principal Investigator |
NIWA Masakazu 国立研究開発法人日本原子力研究開発機構, バックエンド研究開発部門 東濃地科学センター, 研究副主幹 (90421685)
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| Co-Investigator(Kenkyū-buntansha) |
島田 耕史 国立研究開発法人日本原子力研究開発機構, 高速炉研究開発部門 もんじゅ運営計画・研究開発センター, 技術副主幹 (10446403)
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 石英 / 水和 / 断層 / 活動性 / 地質学 / 年代測定 |
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| Outline of Final Research Achievements |
We focused on hydration of quartz in faulted rocks to identify recent fault activity. Fault activity possibly facilitates a growth of the quartz hydration layer, though hydration rate of quartz is generally too slow. In this study, secondary ion mass spectrometry (SIMS) analysis was applied to examine an influence of fault activity on the quartz hydration.
Based on the analyses for quartz from both faulted and unfaulted rocks in chert and granite, significant increase of hydrogen ion concentration along shiny fault planes was clear compared to natural, flat surfaces without fault slip. The SIMS analysis could be applicable for the estimation of hydration thickness of quartz along faults as well as the measurement of obsidian hydration thickness on the archaeological studies. The tests for still more samples should be further studies to examine geochronological application for fault activity.
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Report
(5 results)
Research Products
(10 results)
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[Journal Article] Identification of pumice derived from historic eruption in the same volcano:2016
Author(s)
生田正文, 丹羽正和, 檀原 徹, 山下 透, 丸山誠史, 鎌滝孝信, 小林哲夫, 黒澤英樹, 國分(齋藤）陽子, 平田岳史
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Journal Title
The Journal of the Geological Society of Japan
Volume: 122
Issue: 3
Pages: 89-107
DOI
NAID
ISSN
0016-7630, 1349-9963
Year and Date
2016-03-15
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Journal Article] Thermal constraints on clay growth in fault gouge and their relationship with fault zone evolution and hydrothermal alteration： Case study of gouges in the Kojaku Granite, Central Japan2016
Author(s)
Niwa, M., Shimada, K., Tamura, H., Shibata, K., Sueoka, S., Yasue, K., Ishimaru, T., Umeda, K.
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Journal Title
Clays and Clay Minerals
Volume: 印刷中
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Presentation] Difference of microscopic texture between fault gouges and hydrothermal clay veins2013
Author(s)
M. Niwa, K. Shimada, K. Aoki, K. Seshimo, Y. Tanaka, N. Okubo, K. Kondo, K. Yasue, T. Ishimaru, K. Umeda
Organizer
Geological Society of America 125th anniversary annual meeting
Place of Presentation
Denver, U.S.A.
Related Report
