1989 Fiscal Year Final Research Report Summary
GRANITE PROVINCES AND ASSOCIATED ORE DEPOSITS OF JAPAN AND OF THE CONTINENTAL MARGIN ADJACENT THERETO
| Project/Area Number |
62303008
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| Research Category |
Grant-in-Aid for Co-operative Research (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
鉱物学(含岩石・鉱床学)
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| Research Institution | KUMAMOTO UNIVERSITY |
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Principal Investigator |
TSUSUE Akio KUMAMOTO UNIV., DEPT. OF GEOL. PROF., 理学部, 教授 (20011512)
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| Co-Investigator(Kenkyū-buntansha) |
SATO Kohei GEOL. SURV., MINERAL RESOURCES DEPT., SENIOR RESEARCHER, 鉱物資源部, 主任研究官
SHIBATA Ken GEOL. SURV., GEOCHEM. DEPT, HEAD, 地殻化学部, 部長
SHIMIZU Masaaki UNIV. OF TOKYO, UNIV. MUS., RESEARCH FELLOW, 総合研究資料館, 助手 (50162714)
KANO Takashi YAMAGUCHI UNIV., DEPT. MINERAL. SCI. AND GEOL., 理学部, 助教授 (60108264)
SHIMAZAKI Hidehiko UNIV. OF TOKYO, GEOL. INST., PROF., 理学部, 教授 (50013751)
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| Project Period (FY) |
1987 – 1989
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| Keywords | Comparison of Jurassic granitoids / Hida belt / South Korea / REE patterns / Radiometric ages / Initial strontium ratios / Modal composition / Geological situation of granitoids |
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| Research Abstract |
A comparison of the Jurassic granitoids between the Hida belt and South Korea has been made utilizing the REE(rare earth element) pattems, initial Sr ratios, and types of granitoids.
From the data, it will be seen that similarities and dissimilarities of the Jurassic granitoids between two regions. These are: 1) The modal composition of the Jurassic granitoids are similar between the two regions; 2) the radiometric ages of the Jurassic granitoids in the Hida belt are a little older than the ages of the Jurassic granitoids in South Korea; 3) the types, initial strontium ratios, and REE patterns of the Jurassic granitoids are different.
These facts mean that source materials and genesis of the Jurassic granitoids between two regions were different. Although it is still immature to conclude the geological relations of the Jurassic granitoids between the two regions, from the difference in the initial strontium ratios between the two regions, it is suggested that the Jurassic granitoids in South Korea may have been situated in the continental side compared with the Jurassic granitoids in the Hida belt.
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Research Products
(19 results)
