1999 Fiscal Year Final Research Report Summary
Development of polarized laser scanning microscope and its use to quantitative analysis of rock textures
| Project/Area Number |
09440173
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Geology
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| Research Institution | University of Tokyo |
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Principal Investigator |
SHIMIZU Ichiro Graduate School of Science, University of Tokyo, Research Associate, 大学院・理学系研究科, 助手 (40211966)
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| Co-Investigator(Kenkyū-buntansha) |
SHIMAMOTO Toshihiko Graduate School of Science, Kyoto University, Professor, 大学院・理学研究科, 教授 (20112170)
NAKASHIMA Satoru Graduate School of Science and Engineering Tokyo Institute of Technology, Professor, 大学院・理工学部, 教授 (80237255)
MASUDA Toshiaki Faculty Science, Shizuoka University, Professor, 理学部, 教授 (30126164)
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| Project Period (FY) |
1997 – 1999
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| Keywords | laser scanning microscope / image processing / rock texture / recrystallization / particle analysis / confocal image / fluorescence / polarized image |
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| Research Abstract |
New techniques of quantitative analysis of rock textures using a laser scanning microscope (LSM) are proposed. A LSM equipped with polarized filters was used to capture various kinds of digital images of rock texture. Confocal images of reflected laser beams were used to analyze surface topography of rock specimens. Cracks and grain boundaries in rocks were cleary visualized and analyzed by digital image processing techniques. Polarized images of rock textures under blue (B=488 nm), green (G=568 nm) and red (R=633 nm) laser beams were superimposed to construct color (RGB) images. Optical properties of minerals such as reflectance and retardation are accurately measured by the LSM.Spectroscopic imaging of rock texture enable us to viusalize the distribution of a mineral under considerlation. Organic materials in sedimentary rocks are detected in intensity of map of fluorescence.
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