論文

• Maureen Feineman, Takuya Moriguti, Tetsuya Yokoyama, Sakiko Terui, Eizo Nakamura. Sediment-enriched adakitic magmas from the Daisen volcanic field, Southwest Japan., Geochem. Geophys. Geosystem., Vol. DOI: 10.1002/ggge.20176, 2013.
• T.A Chekol, Katsura Kobayashi, Tetsuya Yokoyama, Chie Sakaguchi, Eizo Nakamura. Timescales of magma differentiation from basalt to andesite beneath Hekla Volcano, Iceland: Constraints from U-series disequilibria in lavas from the last quarter-millennium flows., Geochim. Cosmochim. Acta, Vol. 75, pp. 256-283, 2011.
• Takeshi Kuritani, Tetsuya Tokoyama, Hiroshi Kitagawa, Katsura Kobayashi, Eizo Nakamura. Geochemical evolution of historical lavas from Askja Volcano, Iceland: Implications for mechanisms and timescales of magmatic differentiation., Geochim. Cosmochim. Acta, Vol. 75, pp. 570-587, 2011.
• Festus T. Aka, Tetsuya Yokoyama, Minoru Kusakabe, Eizo Nakamura, Gregory Tanyileke, Bekoa Ateba, Vincent Ngako, Joseph Nnange, Joseph Hell. U-series dating of Lake Nyos maar basalts, Cameroon (West Africa): Implications for potential hazards on the Lake Nyos dam, Journal of Volcanology and Geothermal Research, Vol. 176, pp. 212-224, 2008.
• Takeshi Kuritani, Tetsuya Yokoyama, Eizo Nakamura. Generation of rear-arc magmas induced by influx of slab-derived supercritical liquids: Implications from alkali basalt lavas from Rishiri volcano, Kurile Arc, Journal of Petrology, Vol. 49, pp. 1319-1342, 2008.
• Takeshi Kuritani, Tetsuya Yokoyama, Eizo Nakamura. Rates of thermal and chemical evolution of a cooling magma chamber: a chronological and theoretical study on basaltic and andesitic lavas from Rishiri Volcano, Japan, Journal of Petrology, Vol. 48, pp. 1295-1319, 2007.
• Tetsuya Yokoyama, Festus T. Aka, Minoru Kusakabe, Eizo Nakamura. Plume-lithosphere interaction beneath Mt. Cameroon volcano, West Africa: Constraints from 238U-230Th-226Ra and Sr-Nd-Pb isotope systematics, Geochimica et Cosmochimica Acta, Vol. 71, pp. 1835-1854, 2007.
• Tetsuya Yokoyama, Takeshi Kuritani, Katsura Kobayashi, Eizo Nakamura. Geochemical evolution of a shallow magma plumbing system during the last 500 years, Miyakejima volcano, Japan: Constraints from 238U-230Th-226Ra systematics, Geochimica et Cosmochimica Acta, Vol. 70, pp. 2885-2901, 2006.
• Takeshi Kuritani, Tomohiro Usui, Tetsuya Yokoyama, Eizo Nakamura. Accurate isotopic and concentration analyses of small amounts of Pb using isotope dilution coupled with the double spike technique, Geostandards and Geoanalytical Research, Vol. 30, pp. 209-220, 2006.
• Tetsuya Yokoyama, Eizo Nakamura. Precise analysis of the 228Ra/226Ra isotope ratio for short-lived U-series disequilibria in natural samples by total evaporation thermal ionization mass spectrometry (TE-TIMS), Journal of Analytical Atomic Spectrometry, Vol. 19, pp. 717-727, 2004.
• Takeshi Kuritani, Tetsuya Yokoyama, Katsura Kobayashi, Eizo Nakamura. Shift and rotation of composition trends by magma mixing: 1983 eruption at Miyake-jima volcano, Japan, Journal of Petrology, Vol. 44, pp. 1895-1916, 2003.
• Eizo Nakamura, Akio Makishima, Takuya Moriguti, Katsura Kobayashi, Chie Sakaguchi, Tetsuya Yokoyama, Ryoji Tanaka, Takeshi Kuritani, Hiroyuki Takei. Comprehensive geochemical analyses of small amounts (<100mg) of extraterrestrial samples for the analytical competition related to the sample- return mission, MUSES-C, The Institute of Space and Astronautical Science Report, Vol. Sp. No 16, pp. 49-101, 2003.
• Tetsuya Yokoyama, Katsura Kobayashi, Takeshi Kuritani, Eizo Nakamura. Mantle metasomatism and rapid ascent of slab components beneath island arcs: Evidence from 238U-230Th-226Ra disequilibria of Miyakejima volcano, Izu arc, Japan, Journal of Geophysical Research, Vol. doi: 10.1029/2002JB002103, 2003.
• Tetsuya Yokoyama, Eizo Nakamura, Katsura Kobayashi, Takeshi Kuritani. Timing and trigger of arc volcanism controlled by fluid flushing from subducting slab, Proceedings of the Japan Academy, Vol. 78, No. Ser. B, pp. 190-195, 2002.
• Tetsuya Yokoyama, Eizo Nakamura. Precise determination of ferrous iron in silicate rocks, Geochimica et Cosmochimica Acta, Vol. 66, pp. 1085-1093, 2002.
• Hiroyuki Takei, Tetsuya Yokoyama, Akio Makishima, Eizo Nakamura. Formation and suppression of AlF3 during HF digestion of rock samples in Teflon bomb for precise trace element analyses by ICP-MS and ID-TIMS, Proceedings of the Japan Academy, Vol. 77, pp. 13-17, 2001.
• Tetsuya Yokoyama, Akio Makishima, Eizo Nakamura. Precise analysis of 234U/238U ratio using UO2+ ion with thermal ionization mass spectrometry for natural samples, Chemical Geology, Vol. 181, pp. 1-12, 2001.
• Tetsuya Yokoyama, Akio Makishima, Eizo Nakamura. Evaluation of the coprecipitation of incompatible trace elements with fluoride during silicate rock dissolution by acid digestion, Chemical Geology, Vol. 157, pp. 175-187, 1999.
• Tetsuya Yokoyama, Akio Makishima, Eizo Nakamura. Separation of Thorium and Uranium from Silicate Rock Samples Using Two Commercial Extraction Chromatographic Resins, Analytical Chemistry, Vol. 71, pp. 135-141, 1999.

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