Kusatsu-Shirane Volcano
Introduction / Geology of Kusatsu-Shirane Volcano and environs / Geology of Kusatsu-Shirane Volcano
Eruptions of historical times
Rocks of Kusatsu-Shirane Volcano
Geochemistry of Kusatsu-Shirane Volcano
Compositions of volcanic gasses and their variation
Prediction of eruption, mitigation of hazard,
and benefit of volcano
Acknowledgment / References / Postscript
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Acknowledgment
When preparing this geologic map, we were indebted to Mr. Masao Sato and Mr. Tetsuto Sono of Kokan Mining Co. Ltd. for geology of Motoyama area, NE of the map area. We are grateful for their help.
References
In this explanatory text, references are not shown, but major reference sources are listed below. Also general reference for volcanoes is listed too.
Geology of the area
Hayakawa, Y. (1983) Geology of Kusatsu-Shirane volcano. Jour. Geol. Soc. Japan, vol. 89, p. 511-525 (in Japanese with English abstract).
Hayakawa, Y., Aramaki, S., Shimozuru, D. and Ossaka, J. (1981) Kusatsu-Shirane Volcano. In Field Excursion Guide to Fuji, Asama, Kusatsu-Shirane and Nantai Volcanoes, Volcanol. Soc. Japan, p. 49-63.
Mado, H. (1965) Geology and ore deposits of the Ishizu Mine, Gumma Prefecture, Japan. Mining Geology, vol. 15, p. 12-25 (in Japanese with English abstract).
Ota, R. (1957) Explanatory text of the geological map of Japan, scale 1:50,000, “Kusatsu”. Geological Survey of Japan, 83p (in Japanese with English abstract).
Ota, R. and Matsuno, K. (1970) Reinvestigation of Kusatsu-Shirane volcano. Bull. Geol. Surv. Japan, vol. 21, p. 609-618 (in Japanese with English abstract).
Soya, T., Uto, K. and Shitaya, M. (1983) Phreatic eruption of Kusatsu-Shirane Volcano on 26th October 1982. Chishitsu News, no. 341, p.7-16.
Tsuya, H.（1934）On some lavas of the Volcano Kusatu-Sirane, Koduke Province, Japan. Bull. Earthq. Res. Inst., vol. 12, p. 52-76.
Ueno, M., Mado, H., Kimbara, K. and Nishimura, S. (1978) Zonal arrangement of hydrothermal rock alteration of Kusatsu-Shirane･Hanashiki geothermal area, Gumma Prefecture. Rep. Geol. Surv. Japan, no. 259, p. 467-516 (in Japanese with English abstract).
Geochemistry, hot spring, and geothermy
Hirasawa, K. (1978) Report of geothermal energy development survey (8) South of Shirane area. Geothermal Energy, vol. 3, no. 9, p.11-29.
Minami, E., Yamagata, N., Shima, M. and Saijo, Y., (1952) Crater lake “Yugama” of Volcano Kusatsu-Shirane. Part, I. Japanese Journal of Limnology, vol. 16, p. 1-5 (in Japanese with English abstract).
Muto, H. (1978) Improvement of acidic river water quality by the neutralization method of using milk of lime. Proc. Japan Soc. Civil Eng., no. 275, p. 41-52 (in Japanese).
Nomura, T., Takaesu, A., Ossaka, T. and Ossaka, J. (1979) A study on the chemical characteristics of the volcanic gases in Kusatsu-Shirane volcano district. J. Geotherm. Res. Soc. Japan, vol. 1, p. 117-134 (in Japanese with English abstract).
Ossaka, J., Hirabayashi, J., Nomura, A. and Ossaka, T. (1972) Water quality in Manza Hot Spring area and its interpretation. Abst. Symp., Geochem. Soc. Japan, 1972, p. 92 (in Japanese).
Ossaka, J., Hirabayashi, J. and Hayashi, T. (1976) Chemical composition of new ejecta of Kusatsu-Shirane Volcano and eruptive mode. Abst. Annual Meeting, Geochem. Soc. Japan, 1976, p.110 (in Japanese).
Ossaka, J., Hirabayashi, J. Nomura, A. and Ossaka, T. (1980) Distribution of H2S gas in the atmosphere in Kusatsu-Shirane Volcano area and automated measurement and warning system. Abst. Annual Meet. Geotherm. Res. Society, 1980, p. 37.
Ossaka, J., Ozawa, T., Nomura, T., Ossaka, T., Hirabayashi, J., Takaesu, A. and Hayashi, T.（1980）Variation of chemical compositions in volcanic gases and waters at Kusatsu-Shirane Volcano and its activity in 1976. Bull.
Volcanologique, vol. 43, p. 207-216.
Sekioka, M., Sato, M. and Ishihara, M.（1979）Geothermal snow melting system in Japan. Geothermal Resources Transactions, vol. 3, p. 639-642.
Postscript
Kusatsu-Shirane volcano is continuing its activity as at January 1983. If this may continue in the future is not clear.