1987 Fiscal Year Final Research Report Summary
Sedimentological and geophysical inverstigation of the marine sediments distributing around the Japanese Islands
| Project/Area Number |
61490010
|
|---|
| Research Category |
Grant-in-Aid for General Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
広領域
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
FUJIOKA Kantaro Ocean Res. Inst., Univ. of Tokyo Research associate, 海洋研究所, 助手 (20107452)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
FURUTA Toshio Ocean Res.Inst.,Univ. of Tokyo Technician, 海洋研究所, 技官 (30107461)
KOBAYASHI Kazuo Ocean Res. Inst., Univ.of Tokyo Professor, 海洋研究所, 教授 (10013559)
|
|---|
| Project Period (FY) |
1986 – 1987
|
| Keywords | Marine sediments / Terrigenous material / Volcanogenic material / Drainage system Submarine canyon / Arc-trench system / 島弧-海溝系 / 堆積盆 |
|---|
| Research Abstract |
To understand the characteristics of the marine sediments distributing around the Japanese Islands,we have been studying on the following items;
1;Geology of land area;
Geologic survey on land which is the source of the terrigenous and volcanogenic materials were carried out for the Tsushima, Seven Izu Islands, Yap Islands and Otsuchi area.
2; Marine geology;
Marine geologic surveys were carried out in order to understand the distribution of the submarine sediments by R/V Hakuho Maru,TanseiMaru and Yayoi for the Mikura and Hachijyo Basins,around Yap Islands, Sabami Bay and Otsuchi Bay.
The characteristics of the marine sediments distributing around the Japanese Islands are the complex mixtures of Terrigenous,Volcanogenic, Biogenic,Authinenic and Eolian materials. Three major components, Terrigenous (T),Volcanogenic (V) and Biogenic (B) are fundermentally significant for the understanding of the origin of the sedimentary basins around the arc-trench regions. It is clarified that the ratio T/V/B can be the basic indicator for discriminating the marine sediments and the sedimentary basins.
|
