2016 前期セミナー

date name subject
April 14th Tetsuya YOKOYAMA Investigating the influence of non-spectral matrix effects for the determination of 22 trace elements in rock samples by ICP-QMS
April 21st Ryota FUKAI Evaluation of Faraday cup efficiencies in ultra-high precision isotope analysis with TIMS: A case study for Nd isotope measurements
April 25th Saya KAGAMI Rb-Sr and Sm-Nd isotopic systematics: Implications for the evolution of achondrite parent bodies
May 9th Tomohiro USUI Coordinated In situ Analyses of H-C-O Isotopes of Noachian Carbonates: Progress report-3 "implication"
May 16th Hisashi ASANUMA Development of in-situ U-Pb zircon dating by ID TIMS combined with micro-sampling technique: Research plan
May 30th Wataru FUJISAKI Osmium isotope excursion in the central Panthalassa during the Toarcian Oceanic Anoxic Event: Relantionships between Karoo-Ferrar volcanism and climatic-biologic changes
June 13th Ryota MORIWAKI Preliminary report on U-Th-Pb systematics of the depleted olivine-phylic shergottite Dar al Gani 476
June 13th Satoki OKABAYASHI Formation of Fe-Ni metal in ordinary chondrite
June 20th Nao NAKANISHI Equilibrium condensation processes of CB chondrites
July 4th Masashi SHIDARE Analysis of sulfur speciation in the impact melt of Martian meteorite
July 11th Minato TOBITA Preliminary report on Development of low blank Pb purification method for the isotopic analysis of small amount of Pb
July 11th Yuichiro NAGAI Distinct Molybdenum isotopic reservoir in the early Solar System
July 21st Kunihiro MYOJO Nucleosynthetic Sr isotope variability in Allende CAIs
July 25th Kei SUGIMOTO 論文紹介 - "The uranium isotopic composition of the Earth and the Solar System" Goldmann et al. (2016)
July 25th Gaku TANABE 論文紹介 - "Geochemistry of carbonates on Mars: Implication for climate history and nature of aqueous environment" Niles et al. (2013)

2016 後期セミナー

date name subject
October 5th Tetsuya YOKOYAMA In search of presolar grains enriched in r-process nuclides for trans-iron elements
October 12th Satoki OKABAYASHI Highly siderophile elements in Fe-Ni metal of ordinary chondrite
October 19th Ryota FUKAI Paper review: "A nucleosynthetic origin for the Earth's anomalous 142Nd composition" Burkhardt et al. (2016)
October 26th Wataru FUJISAKI Marine 187Os/188Os isotopic record reveals intensified continental weathering during reccurent Middle Triassic ocean anoxia
November 2nd Makiko HABA Evaluation of the initial abundance of 92Nb in the early solar system using micro-minerals in meteorites
November 9th Minato TOBITA Development of low blank column separation method for isotopic analysis of small amount of Pb
November 24th Kunihiro MYOJO Nucleosynthetic Sr isotope variability in Allende CAIs
November 30th Masashi SHIDARE Analyses of sulfur speciation in Martian meteorites by X-ray absorption near-edge structure
December 7th Saya KAGAMI Petrology and chemical composition of a basaltic eucrite, Northwest Africa 7188
December 14th Hisashi ASANUMA U-Pb zircon geochronology of the North Pole Dome adamellite in the eastern Pilbara Craton
December 21st Tomohiro USUI Coordinated In situ Analyses of H-C-O Isotopes of Noachian Carbonates: Progress report-4 "Size and Origin of Martian Ground-Ice"
January 11th Kei SUGIMOTO 岩石試料を対象としたウラン同位体比測定法の開発
January 11th Gaku TANABE X線吸収微細構造分析による火星隕石中の炭酸塩の鉄化学種分析
January 18th Nao NAKANISHI Development of Os isotopic measurement at the picogram level in metal samples from CR chondrites
January 25th Hikaru YAGI 論文紹介 - "U-Th-Pb zircon geochronology by ID-TIMS, SIMS, and laser ablation ICP-MS: Recipes, interpretations, and opportunities" Schaltegger et al. (2015)
February 1st Ryota MORIWAKI Reassessment of the Pb chemical purification method