Chiba, H., Attainment of solution and gas equilibrium in japanese geothermal systems, Geochem. J., 25, 335--355, 1991.
Honma, H., Kusakabe, M., Kagami, H., Iizumi, S., Sakai, H., Kodama, Y., Kimura, M., Major and trace-element chemistry and d/h, 18o/16o, 87sr/86sr and 143nd/144nd ratios of rocks from the spreading center of the okinawa trough, a marginal back-arc basin, Geochem. J., 25, 121--136, 1991.
Ito, E., Katsura, T., Dissolution of silicon and oxygen in molten iron at high- pressure and temperature, Proc. Jpn. Acad. Ser. B-Phys. Biol. Sci., 67, 153--158, 1991.
Ito, E., Sato, H., Aseismicity in the lower mantle by superplasticity of the descending slab, Nature, 351, 140--141, 1991.
Katsura, T., Tsuchida, Y., Ito, E., Yagi, T., Utsumi, W., Akimoto, S., Stability of magnesite under the lower mantle conditions, Proc. Jpn. Acad. Ser. B-Phys. Biol. Sci., 67, 57--60, 1991.
Kirkpatrick, R.J., Howell, D., Phillips, B.L., Cong, X.D., Ito, E., Navrotsky, A., Mas nmr spectroscopic study of mg29sio3 with the perovskite structure, Am. Miner., 76, 673--676, 1991.
Kusakabe, M., Build-up of CO2 at Lake Nyos, Cameroon, Kagaku (Science), 61, 307--310, 1991 (in Japanese).
Makishima, A., Nakamura, E., Precise measurement of cerium isotope composition in rock samples, Chem. Geol., 94, 1--11, 1991.
Makishima, A., Nakamura, E., Calibration of faraday cup efficiency in a multicollector mass- spectrometer, Chem. Geol., 94, 105--110, 1991.
Makishima, A., Nakamura, E., Masuda, A., Applications of La-Ce systematics in the geochemistry, Bull. Volcanol. Soc. Jpn., 36, 161--175, 1991 (in Japanese)．
Ming, L.C., Kim, Y.H., Manghnani, M.H., Ushadevi, S., Ito, E., Xie, H.S., Back transformation and oxidation of (mg, fe)2sio4 spinels at high-temperatures, Phys. Chem. Miner., 18, 171--179, 1991.
Miura, Y., Nagao, K., Noble-gases in 6 gsj igneous rock samples, Geochem. J., 25, 163--171, 1991.
Mizota, C., Endo, H., Um, K.T., Kusakabe, M., Noto, M., Matsuhisa, Y., The eolian origin of silty mantle in sedentary soils from korea and japan, Geoderma, 49, 153--164, 1991.
Mizota, C., Itoh, M., Kusakabe, M., Noto, M., Oxygen isotope ratios of opaline silica and plant opal in 3 recent volcanic ash soils, Geoderma, 50, 211--217, 1991.
Nagao, K., Ogata, A., Miura, Y., Matsuda, J.I., Akimoto, S.I., Highly reproducible 13 and 17 ka k-ar ages of 2 volcanic-rocks, Geochem. J., 25, 447--451, 1991.
Oizumi, T., Fukuzaki, N., Moriyama, N., Urushiyama, Y., Kusakabe, M., Source of sulfur in the atmospheric deposits in view of sulfur isotopic variations - A case study in Niigata prefecture, Japan -, J. Chem. Soc. Jpn., 1991, 675--681, 1991 (in Japanese).
Ohtaka, O., Yamanaka, T., Kume, S., Ito, E., Navrotsky, A., Stability of monoclinic and orthorhombic zirconia - studies by high-pressure phase-equilibria and calorimetry, J. Am. Ceram. Soc., 74, 505--509, 1991.
Ohtani, E., Kato, T., Ito, E., Transition-metal partitioning between lower mantle and core materials at 27 gpa, Geophys. Res. Lett., 18, 85--88, 1991.
Osako, M., Ito, E., Thermal-diffusivity of mgsio3 perovskite, Geophys. Res. Lett., 18, 239--242, 1991.
Sato, H., Viscosity of the upper mantle from laboratory creep and anelasticity measurements in peridotite at high-pressure and temperature, Geophys. J. Int., 105, 587--599, 1991.
Sato, H., Kusakabe, M., Water content and hydrogen isotopic composition of glassy bronzite andesite (sanukite) and glassy rhyolite from Goshikidai and Kanayama, northeast Shikoku, Japan, J. Geol. Soc. Jpn., 97, 755--758, 1991 (in Japanese).
Sato, H., Tchoua, F., Kusakabe, M., Olivine phenocrysts in some cameroonian basalts - implications for primary magma composition, Mineral. Petrol., 44, 253--269, 1991.
Shibata, T., Nakamura, E., Interaction between subducted oceanic slab and wedge mantle inferred from across-arc variations of pb, sr and nd isotopic compositions in northeastern japan, Proc. Jpn. Acad. Ser. B-Phys. Biol. Sci., 67, 115--120, 1991.
Shuto, K., Tsuchiya, N., Tamura, S., Kagami, H., Geochemistry of newly discovered quaternary shiribeshi volcano, northeast japan sea, Mineral. Petrol., 44, 213--234, 1991.
Takaoka, N., Nagao, K., Miura, Y., Noble-gases in y-74063 (unique), Meteoritics, 26, 400--400, 1991.
