@article{CTT100659290, author = {Maureen Feineman and Takuya Moriguti and Tetsuya Yokoyama and Sakiko Terui and Eizo Nakamura}, title = {Sediment-enriched adakitic magmas from the Daisen volcanic field, Southwest Japan.}, journal = {Geochem. Geophys. Geosystem.}, year = 2013, } @article{CTT100659298, author = {T.A Chekol and Katsura Kobayashi and Tetsuya Yokoyama and Chie Sakaguchi and Eizo Nakamura}, title = {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.}, journal = {Geochim. Cosmochim. Acta}, year = 2011, } @article{CTT100659297, author = {Takeshi Kuritani and Tetsuya Tokoyama and Hiroshi Kitagawa and Katsura Kobayashi and Eizo Nakamura}, title = {Geochemical evolution of historical lavas from Askja Volcano, Iceland: Implications for mechanisms and timescales of magmatic differentiation.}, journal = {Geochim. Cosmochim. Acta}, year = 2011, } @article{CTT100575404, author = {Festus T. Aka and Tetsuya Yokoyama and Minoru Kusakabe and Eizo Nakamura and Gregory Tanyileke and Bekoa Ateba and Vincent Ngako and Joseph Nnange and Joseph Hell}, title = {U-series dating of Lake Nyos maar basalts, Cameroon (West Africa): Implications for potential hazards on the Lake Nyos dam}, journal = {Journal of Volcanology and Geothermal Research}, year = 2008, } @article{CTT100575398, author = {Takeshi Kuritani and Tetsuya Yokoyama and Eizo Nakamura}, title = {Generation of rear-arc magmas induced by influx of slab-derived supercritical liquids: Implications from alkali basalt lavas from Rishiri volcano, Kurile Arc}, journal = {Journal of Petrology}, year = 2008, } @article{CTT100559204, author = {Takeshi Kuritani and Tetsuya Yokoyama and Eizo Nakamura}, title = {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 = {Journal of Petrology}, year = 2007, } @article{CTT100559199, author = {Tetsuya Yokoyama and Festus T. Aka and Minoru Kusakabe and Eizo Nakamura}, title = {Plume-lithosphere interaction beneath Mt. Cameroon volcano, West Africa: Constraints from 238U-230Th-226Ra and Sr-Nd-Pb isotope systematics}, journal = {Geochimica et Cosmochimica Acta}, year = 2007, } @article{CTT100559200, author = {Tetsuya Yokoyama and Takeshi Kuritani and Katsura Kobayashi and Eizo Nakamura}, title = {Geochemical evolution of a shallow magma plumbing system during the last 500 years, Miyakejima volcano, Japan: Constraints from 238U-230Th-226Ra systematics}, journal = {Geochimica et Cosmochimica Acta}, year = 2006, } @article{CTT100559205, author = {Takeshi Kuritani and Tomohiro Usui and Tetsuya Yokoyama and Eizo Nakamura}, title = {Accurate isotopic and concentration analyses of small amounts of Pb using isotope dilution coupled with the double spike technique}, journal = {Geostandards and Geoanalytical Research}, year = 2006, } @article{CTT100559207, author = {Tetsuya Yokoyama and Eizo Nakamura}, title = {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 = {Journal of Analytical Atomic Spectrometry}, year = 2004, } @article{CTT100559209, author = {Takeshi Kuritani and Tetsuya Yokoyama and Katsura Kobayashi and Eizo Nakamura}, title = {Shift and rotation of composition trends by magma mixing: 1983 eruption at Miyake-jima volcano, Japan}, journal = {Journal of Petrology}, year = 2003, } @article{CTT100559210, author = {Eizo Nakamura and Akio Makishima and Takuya Moriguti and Katsura Kobayashi and Chie Sakaguchi and Tetsuya Yokoyama and Ryoji Tanaka and Takeshi Kuritani and Hiroyuki Takei}, title = {Comprehensive geochemical analyses of small amounts (<100mg) of extraterrestrial samples for the analytical competition related to the sample- return mission, MUSES-C}, journal = {The Institute of Space and Astronautical Science Report}, year = 2003, } @article{CTT100559212, author = {Tetsuya Yokoyama and Katsura Kobayashi and Takeshi Kuritani and Eizo Nakamura}, title = {Mantle metasomatism and rapid ascent of slab components beneath island arcs: Evidence from 238U-230Th-226Ra disequilibria of Miyakejima volcano, Izu arc, Japan}, journal = {Journal of Geophysical Research}, year = 2003, } @article{CTT100559211, author = {Tetsuya Yokoyama and Eizo Nakamura and Katsura Kobayashi and Takeshi Kuritani}, title = {Timing and trigger of arc volcanism controlled by fluid flushing from subducting slab}, journal = {Proceedings of the Japan Academy}, year = 2002, } @article{CTT100559185, author = {Tetsuya Yokoyama and Eizo Nakamura}, title = {Precise determination of ferrous iron in silicate rocks}, journal = {Geochimica et Cosmochimica Acta}, year = 2002, } @article{CTT100559213, author = {Hiroyuki Takei and Tetsuya Yokoyama and Akio Makishima and Eizo Nakamura}, title = {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}, journal = {Proceedings of the Japan Academy}, year = 2001, } @article{CTT100559194, author = {Tetsuya Yokoyama and Akio Makishima and Eizo Nakamura}, title = {Precise analysis of 234U/238U ratio using UO2+ ion with thermal ionization mass spectrometry for natural samples}, journal = {Chemical Geology}, year = 2001, } @article{CTT100559191, author = {Tetsuya Yokoyama and Akio Makishima and Eizo Nakamura}, title = {Evaluation of the coprecipitation of incompatible trace elements with fluoride during silicate rock dissolution by acid digestion}, journal = {Chemical Geology}, year = 1999, } @article{CTT100559189, author = {Tetsuya Yokoyama and Akio Makishima and Eizo Nakamura}, title = {Separation of Thorium and Uranium from Silicate Rock Samples Using Two Commercial Extraction Chromatographic Resins}, journal = {Analytical Chemistry}, year = 1999, }