| Project/Area Number |
07554057
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 試験 |
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| Research Field |
Petrology/Mineralogy/Science of ore deposit
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| Research Institution | Tohoku University |
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Principal Investigator |
YOSHIDA Takeyoshi Tohoku Univ., Graduate School of Science, Associate Professor, 大学院・理学研究科, 助教授 (80004505)
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| Co-Investigator(Kenkyū-buntansha) |
HASENAKA Toshiaki Tohoku Univ., Graduate School of Science, Research Associate, 大学院・理学研究科, 助手 (50202429)
ISHIKAWA Ken-ichi Tohoku Univ., Graduate School of Science, Research Associate, 大学院・理学研究科, 助手 (20158744)
EHIRO Masayuki Tohoku Univ., Graduate School of Science, Associate Professor, 大学院・理学研究科, 助教授 (10124554)
KANISAWA Satoshi Tohoku Univ., Graduate School of Science, Professor, 大学院・理学研究科, 教授 (70005784)
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| Project Period (FY) |
1995 – 1996
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| Project Status |
Completed (Fiscal Year 1996)
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| Budget Amount *help |
¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 1996: ¥1,400,000 (Direct Cost: ¥1,400,000)
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| Keywords | igneous petrology / Discrimination of igneous rocks / Geochemical data / expart system for igneous petrology / image of rock textures / エキスパート・システム / 岩石組織 / 露頭写真 / 化学分析データ / データベース |
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| Research Abstract |
An expert system for the igneous petrology was constructed. We can discriminate each rock by this system based on the geochemical data. This system is composed of subprograms as follows ; the integrated part where various files are controlled and are managed, the data base part where the data are maintained and controlled systematically, the graphics part to display graph if necessary and to discriminate the data, the data mapping part where the original data or the secondary data are displayd on map, and, the data processing part where various data processings and the model calculations are done by using these data. Also, the discrimination system for the textures and the structures of the rocks taken by using the camera and the video camera was constructed.
It is necessary to construct the data base of igneous rockes for the discrimination of the belonging group and the origin of the each rock group based on the characteristic of the geochemical data. We made a data base for the analytical data of major and trace elements of igneous rockes which we have analyzed by XRF,photon activation, and ICP-MS.The analyzed samples are various igneous rocks collected from various places such as Neogene volcanic rocks from Northeast Honshu arc, the Quaternary volcanic rocks from Central Honshu, and the Cretaceous volcanic rocks from ther Sorachi group, volcanic rocks of Paleogene Shimanto group, and the Quaternary volcanic rocks from the Mexican volcanic belt. Then, the discrimination works were done by using this system about those various igneous rocks, and a part of the results was published.
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