2015 Fiscal Year Final Research Report
Rock properties based on anisotropy of magnetic susceptibility of sedimentary rock samples impregnated with ferromagnetic suspension
Project/Area Number |
25400456
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Solid earth and planetary physics
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Research Institution | Osaka Prefecture University |
Principal Investigator |
Itoh Yasuto 大阪府立大学, 理学(系)研究科(研究院), 准教授 (20285315)
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Project Period (FY) |
2013-04-01 – 2016-03-31
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Keywords | 岩石磁気 / 浸透率 / 異方性 / 活断層 / テクトニクス / 磁化率 / 磁性流体 / 変動帯 |
Outline of Final Research Achievements |
The present study aimed at establishment of the experimental procedures of quantitative assessment of anisotropy of permeability of rocks. To achieve the mission, ferrofluid experiments based on low- / high-pressure treatments were executed on a turbidite sequence burying a foreland basin, of which sedimentological and tectonic backgrounds had been elucidated. For all of the processed samples, tomographic images were obtained utilizing a micro-focus X-ray CT scanner that succeeded in visualization of the three-dimensional pore and fracture networks in rocks. Geologic ages of the analyzed rocks were determined by means of fission-track and U-Pb dating methods. Thus we clarified spatiotemporal distribution of various tectonic events and successfully evaluated their impact on microscopic rock fabrics envisioned through the ferrofluid impregnation experiments.
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Free Research Field |
地質学
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