2013年度 前期セミナー

date name subject
April 16 Tetsuya YOKOYAMA New geochemical approach to search for extra-terrestrial inputs in geologic samples
April 26 Yuichiro NAGAI Development of highly precise and accurate molybdenum isotope analysis using N-TIMS for the study of nucleosynthetic isotope anomalies in meteorites
Asobo N.E. ASAHH Petrogenetic processes beneath the Cameroon Volcanic Line: constraints from major, trace elements and isotope systematics of mafic lavas
May 10 Kunihiro MYOJO STRONTIUM ISOTOPE ANOMALIES AND 26Al-26Mg CHRONOLOGY IN CAIs FROM ALLENDE
Wataru OKUI Reproducibility of 84Sr/86Sr ratio measurements using thermal ionization mass spectrometry (TRITON plus)
May 17 Tatsuya WATANABE Determination of extremely small amount of U and Th by ID-TIMS for the study of U-Th cosmochronology
May 31 Ryota MORIWAKI Measurement of lead isotopic ratio by using thermal ionization mass spectrometry
Satoki OKABAYASHI
(Kyot Univ.)		 Development of the ETV-MC-ICPMS technique for W isotope analysis
June 14 Tomohiro USUI Evidence from Hydrogen Isotopes in Meteorites for a Massive Surface Ice Reservoir on Mars: Constraints on Recent Ice Ages on Mars
Yusuke FUKAMI Tellurium isotope anomalies in acid leaching samples of meteorites
June 21 Yuichiro NAGAI Development of tungsten isotope analysis for the study of chronological constraints for metal components in CAI
Asobo N.E. ASAAH Regional extent of magmatic CO2 in crater lakes of the Oku Volcanic Group: Constrains from petrogenesis and relation with tectonic events
June 28 Tatsuya WATANABE Determination of extremely small amount of U and Th by ID-TIMS for the study of U-Th-Pb cosmochronology
July 12 Wataru OKUI Decision of chondrule petrologic composition by 3D X-ray CT method
Ryota MORIWAKI Measurement of lead isotopic ratio by using thermal ionization mass spectrometry
July 19 Kiwamu SHIMAZAKI 論文紹介："Origin and Thermal History of Fe-Ni Metal in Primitive Chondrites"
Ryota FUKAI 論文紹介："Chemical Evolution of Galaxies"
Saya KAGAMI 論文紹介："Old Sm-Nd ages for cumulate eucrites and redetermination of the solar system initial 146Sm/144Sm ratio"

2013年度 後期セミナー

date name subject
October 21 Tetsuya YOKOYAMA Origin of the Solar System: Galactic chemical evolution and presolar grains
October 28 Asobo N.E. ASAAH Mineralogy, Petrography and Geochemistry of alkaline and sub-alkaline volcanic rocks of the Nyos Volcano (Cameroon Volcanic Line), West Africa: characterization and petrogenesis
November 6 (Wed) Wataru OKUI Measuring stable Sr isotope ratios in Allende (CV 3.6) chondrules aimed at the clarification of the silicate material evolution process in the early solar system
November 11 Ryota MORIWAKI Lead isotope measurements for analysis of martian meteorites
Hisashi ASANUMA
(Tokyo Tech)		 Identification of cosmogenic material in pelagic sediments based on platinum-group-elements (PGEs) abundances
Nobember 18 Yusuke FUKAMI Precise Tellurium Isotope Analysis of Acid Leaching Samples of Carbonaceous Meteorites
Nobember 25 Ryota FUKAI Determination of trace element abundances in presolar grains
Saya KAGAMI Development of highly precise Nd isotope analysis for the chronological study of Eucrite parent body
December 2 Kiwamu SHIMAZAKI Petrographic description of CR chondrite
Yuichiro NAGAI Molybdenum Isotope Anomalies in Meteoritic Samples: Development of Mo Isotope Analysis by Using N-TIMS
December 9 Kunihiro MYOJO Strontium isotope heterogeneity in the single CAI from CV chondrites Allende
December 16 Tomohiro USUI Mixing relations of the howardite-eucrite-diogenite suite: a new statistical approach of Independent Component Analysis for the Dawn mission
Wataru FUJISAKI
(Tokyo Tech)		 Platinum group element anomalies in the Triassic-Jurassic deep-sea sediments
January 16 (Thu) Kiwamu SHIMAZAKI Trace element geochemistry of CR chondrite metal
Ryota FUKAI Development of a digestion method for the determination of trace element abundances in presolar grain
Saya KAGAMI Development of highly precise Nd isotope analysis for chronological study of the eucrite parent body
January 20 Wataru Okui Classifying chondrules based on major element compositions
January 27 Ryota MORIWAKI Preliminary report on U-Th-Pb isotope systematics of the olivine-phyric shergottite Tissint
Yuichiro NAGAI S-Process Implication from Molybdenum Isotopic Anomalies in Acid-Leaching Samples of Chondrites
February 3 Asobo N.E. ASAAH Geochemistry and petrogenesis of lavas from Lake Nyos and three neighboring lakes along the Cameroon Volcanic Line, west Africa
February 12 Kunihiro MYOJO Strontium isotope heterogeneity within single CAI from Allende (Al-Mg chronology)