| Project/Area Number |
01540626
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
地質学一般
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| Research Institution | Shinshu University |
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Principal Investigator |
KUMON Fujio Assistant Professor, Dept. Geology, Fac. Sci., Shinshu Univ., 理学部, 助教授 (60161717)
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| Co-Investigator(Kenkyū-buntansha) |
HOYANAGI Kouichi Assistant, Dept. Geology. Fac. Sci., Shinshu Univ., 理学部, 助手 (30202302)
KOSAKA Tomoyoshi Assistant Professor, Dept. Geology. Fac. Sci. : Shinshu Univ., 理学部, 助教授 (20020670)
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| Project Period (FY) |
1989 – 1990
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| Project Status |
Completed (Fiscal Year 1990)
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| Budget Amount *help |
¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1990: ¥500,000 (Direct Cost: ¥500,000)
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| Keywords | Tetori Group / Shokawa Village / Plant Fossil / Orthoquartzite / Jurassic / Cretaceous / Sho River / Mitarai Formation / 御手洗層 / 飛騨帯 / ジュラ起後期 / 白亜起前期 |
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| Research Abstract |
The late Jurassic to early Cretaceous Tetori Group in the Shokawa Village,Gifu Prefecture is divided into eight formations which have conformable relationship with each other. The sedimentary environments of the group changed from a shallow marine bay to meadering or braided river plain with some fluctuations. The modal composition of conglomerates and sandstones of the Tetori Group investigated quantitatively and systematically indicates that the source lands were composed mainly of granite and geneses, but sometime associated with Paleozoic to Mesozoic sedimentary rocks or Precambrian othoquartzites near the basin. These changes of the hinterland might be related to the tectonic movements in the Latest Jurassic to Early Cretaceous time in Japanese Islands.
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