1997 Fiscal Year Final Research Report Summary
TRANSITIONAL STUDY ON HYDROTHERMAL ACTIVITY IN GEOTHERMAL AREAS
| Project/Area Number |
07640636
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Petrology/Mineralogy/Science of ore deposit
|
|---|
| Research Institution | UNIVERSITY OF TOKYO |
|---|
Principal Investigator |
UTADA Minoru UNIV.OF TOKYO,UNIV.MISEUM,PROF., 総合研究博物館, 教授 (50012406)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
SHIMIZU Masaaki UNIV.OF TOKYO,UNIV.MUSEUM,ASS., 総合研究博物館, 助手 (50162714)
|
|---|
| Project Period (FY) |
1995 – 1997
|
| Keywords | ACTIVE GEOTHERMAL AREA / PALEOGEOTHERMAL AREA / HYDROTHERMAL ALTERATION / CALDERA / SAN 'IN DISTRICT / SHITARA CASDERA / smseyite / 乙女鉱山末広脈 |
|---|
| Research Abstract |
(1) Zeolite-its species, mode of occurrence, distribution and condition of formation : Zeolitization is classified into three ; Ca-silicate, Ca-Na-silicate and Na-silicate types. Hydrothermal zeollites which show zonal distribution often occur in geothermal areas in volcanic belts, and are usefl to estimate temperatural and chemical chenges of hydrogthermal activity in such geothermal areas. This study summarized the condition of formation of the zeolites
(2) Geochemical study on alteration minerals of basalts in the Furutobe Kuroko mining area : Chlorite (230-250ﾟC) was formed under lower temperature than epidote (250-280ﾟC), based on fluid inclusions. The water/rock ratio of the former (max.40) was lager than that of the latter (0.1-0.8). These should be mainly attributed to porosity of the original basalts
(3) Sulfur isotopic study on hydrothermal deposits in the southern Fossa Magna area
(4) Ferrierite from Monbertsu, Hokkaido
(5) Pavonite from the Ikuno mine, Hyogo Prefecture
(6) Semseyite from the Chichibu mine, Saitama Prefecture
(7) Mineralization of the Suehiro vein of the Otome mine, Yamanashi Prefecture.
|
Research Products
(20 results)
-
-
-
-
-
-
-
-
[Publications] Matsubara, S., Kato, A., Shimizu, M., Sekiuchi, K.and Suzuki, Y.: "Romeite from the Gozaisho mine, Iwaki, Japan" Mineralogical Journal. 18. 155-160 (1996)
Description
「研究成果報告書概要(欧文)」より
-
-
-
-
-
-
[Publications] Shimizu, M.Schmidt, S.T., Stanley, C.J.and Tsunoda, K.: "Kawazulite and unnamed Bi_3 (Te, Se, S) _4 in Ag-Bi-Te-Se-S mineralization from the Suttsu mine, Hokkaido, Japan" Neues Jahrbuch fur Mineralogie, Abhandlungen. 169. 305-308 (1995)
Description
「研究成果報告書概要(欧文)」より
-
-
-
-
-
-
