Original papers
Soya, T., Uto, K. and Suto, S. (1984) 三宅島火山1983年噴火と噴出物−とくに溶岩流について−．火山，29，S230-S241.
Soya, T., Uto, K. Makimoto, H., Kamata, H., Okumura K. and Suto, S.(1984) 三宅島火山1983年噴出物の化学組成および鉱物組成．火山，29，S283-S296.
Uto, K. (1986) Variation of Al2O3 content in late Cenozoic Japanese basalts: a re-examination of Kuno's high-alumina basalt. J.Volcanol.Geotherm.Res., 29, 397-411.
Uto, K., Hirai, H., Goto, K. and Arai, S. (1987) K-Ar ages of carbonate- and mantle nodule-bearing lamprophyre dikes from Shingu, central Shikoku, Southwest Japan. Geochem.J., 21, 283-290.
Kamata, H., Uto, K. and Uchiumi,S.(1988) Geochronology and evolution of the Post-Shishimuta Caldera activity around the Waitasan area in the Hohi volcanic zone, Kyushu, Japan. Bull.Volcanol.Soc.Japan, 33, 305-320.
Uto, K., Shibata,K. and Uchiumi,S. (1987) K-Ar ages of Neogene volcanic rocks from Northeast Japan: 1. the Mitaki and the Takadate Formations from Sendai district, Miyagi Prefecture. J.Geol.Soc.Japan, 95, 863-872 (in Japanese with English abstract).
松本哲一・宇都浩三・柴田 賢(1989) 歴史溶岩のアルゴン同位体比−若い火山岩のK-Ar年代測定における初生値補正の重要性−．質量分析，37，353-363.
内海 茂・宇都浩三・柴田 賢(1989) 岩石標準試料のK-Ar年代．質量分析，37，375-381.
宇都浩三・田上高広・内海 茂(1994) 山陰地方東部，鮮新統照来層群火山岩類のK-Ar及びフィッショントラック年代．地質雑，100, 787-798．
Uto, K., Takahashi, E., Nakamura, E. and Kaneoka, I. (1994) Geochronology of alkali volcanism in Oki-Dogo Island, Southwest Japan: geochemical evolution of basalts related to the opening of the Japan Sea. Geochem.J., 28, 431-449.
宇都浩三(1995) 火山と年代測定：K-Ar,40Ar/39Ar年代測定法の現状と将来．火山，40，S27-S46.
宇都浩三・R.M.コンレー・平田岳史・内海 茂(1995) 地質調査所における同位体希釈法K-Ar年代測定システムの精度向上−質量分析計自動計測制御及びピペット方式スパイク導入法の適用−．地調月報，46，239-249.
Tagami, T., 宇都浩三, Matsuda, T., Hasebe, N. and Matsumoto, A. (1995) K-Ar and fission-track ages of the Nisatai Dacite, Iwate Prefecture, Japan: A candidate for Tertiary age standard. Geochem.J., 29, 207-211.
宇都浩三・阿武 賢・周藤正史・内海 茂(1996) 西南日本，中期中新世室生火山岩類のK-Ar年代．火山，41，257-261.
Uto, K. and Tatsumi, Y. (1996) Quaternary volcanism of Japanese Islands. Island Arc, 5, 250-261.
宇都浩三・内海 茂(1997) 鹿児島県樋脇町丸山溶岩円頂丘のK-Ar年代：琉球弧第２列目の第四紀火山．火山，42，299-302．
Uto, K., Ishizuka, O., Matsumoto, A., Kamioka, H. and Togashi, S. (1997) Laser-fusion 40Ar/39Ar dating system of the Geological Survey of Japan: System outline and preliminary results. Bull.Geol.Surv.Japan, 46，23-46.
Xu, S., Uto, K. and Kim, Y.-K. (1998) K-Ar dating of volcanic rocks from Ulreung Island, Korea. Geochem.J., 32, 117-123.
Sudo, M., Uto, K., Anno, K., Ishizuka, O. and Uchiumi, S. (1998) SORI93 biotite: A new mineral standard of K-Ar dating. Geochem.J., 32, 49-58.
Ishizuka, O., Uto, K., Yuasa, M., and Hochstaedter, A.G. (1998) Preliminary K-Ar ages from the across-arc seamout chains in the back-arc knoll region of the Izu-Ogasawara arc. Island Arc, 7, 408-421.
Sudo,M., Uto, K., Tatsumi,Y. and Matsui,K.(1998) K-Ar geochronology of a Quaternary monogenetic volcano group in Ojika Jima District, Southwest Japan, Bull.Volcanol. (in press).
宇都浩三・石塚 治(1999) K-Ar，40Ar/39Ar法による第三紀火山岩の年代測定の現状と将来，石油技術協会誌（印刷中）．
宇都浩三・石塚 治(1999) Revealing volcanic history by the laser-heating 40Ar/39Ar dating method（印刷中）．
Maps
Uto, K., Hayakawa,Y., Aramaki,S. and Ossaka,J. (1983) Geologic map of Kusatsu-Shirane volcano. Geologic map of volcanoes 3, Geological Survey of Japan (in Japanese with English abstract).
宇都浩三・阪口圭一・寺岡易司・奥村公男・駒沢正夫(1997) 20万分の１地質図幅「鹿児島」，地質調査所．
松井和典・宇都浩三・広島俊夫(1997) 20万分の１地質図幅「唐津」，地質調査所．