2014 前期セミナー

date name subject
April 17 Tetsuya YOKOYAMA Volatility controlled stable isotope anomalies in the early solar system
April 24 Asobo N.E. ASAAH Variation in Geochemical Composition of Dykes along the Cameroon Volcanic Line (CVL): constraints on CVL magmatism and tectonism
Kunihiro MYOJO Strontium isotope heterogeneity within single CAI from Allende
May 15 Yuichiro NAGAI Chemical Separation of Mo and W from Terrestrial and Extraterrestrial Samples via Anion Exchange Chromatography
Ryota MORIWAKI Lead isotopic composition of shergottites: Implications for the compositions of the martian mantle and crust
May 22 Wataru OKUI Multiple Sr isotope reservoirs for the Allende chondrules and matrix
Ryota FUKAI Chondrite neodymium isotopic heterogeneity
May 29 Asobo N.E. ASAAH Origin of Enriched Mantle-I-end-member (EM-I) in OVG magmatism
Tomohiro USUI A partial melting study of an H-chondrite composition with application to the unique achondrite Graves Nunataks 06128 and 06129
June 5 Wataru FUJISAKI The plan for the doctor thesis: Deciphering paleo-oceanic environment based on Os and Mo isotopes from the Middle Triassic to the Early Jurassic
Saya KAGAMI Development of highly precise analysis of Nd isotope and Sm/Nd ratios
June 12 Kunihiro MYOJO Strontium isotope heterogeneity in CAIs from Allende
Ryota MORIWAKI Lead isotopic composition of sulfides: Implications for the martian igneous process
June 19 Yuichiro NAGAI Precise Molybdenum Isotope Analysis by N-TIMS: Evaluation of Oxygen Isotopic Composition During In-Run Measurement
Hisashi ASANUMA
(Tokyo Tech)
Subduction-related orogeny forming northwestWales
June 26 Wataru OKUI Quantification of analytical blanks during the rock powdering system
Ryota FUKAI Separation and observation of presolar SiC for the study of galactic chemical evolution
July 3 Wataru FUJISAKI Redox changes in the Panthalassa superocean from the Middle Triassic to Early Jurassic: Insights from redox-sensitive elements in deep-sea sediments of Mino-Tanaba belt, SW Japan
Saya KAGAMI Development of highly precise analysis of Sm and Nd concentrations and Nd isotope ratios
July 10 Yusuke FUKAMI Development of Precise Pb Isotope Analysis of Zircon by Micro-drill Sampling and TIMS
July 17 Syo HASEGAWA [paper review] Stable-isotopic anomalies and the accretionary assemblage of the Earth and Mars: A subordinate role for carbonaceous chondrites (Warren, 2011)
Minato TOBITA [paper review] Constraints on the U-Pb isotopic systematics of Mars inferred from a combined U-Pb,Rb-Sr, and Sm-Nd isotopic study of the Martian meteorite Zagami (Borg et al., 2005)

2014 後期セミナー

date name subject
October 21 Tetsuya YOKOYAMA Nucleosynthetic Strontium Isotope Anomalies in Carbonaceous Chondrites: Results from Sequential Acid Leaching
November 4 Asobo N.E. ASAAH Doctral thesis summary
November 11 Yuichiro NAGAI Molybdenum isotope anomalies in ordinary chondrites
November 18 Kunihiro MYOJO Strontium isotope heterogeneity in CAIs from Allende: New samples, spinel-pyroxene rich inclusions
Ryota MORIWAKI Lead isotopic systematics of olivine-phyric shergottite Tissint
November 25 Wataru OKUI [paper review] A critical examination of the X-wind model for chondrule and calcium-rich, aluminum-rich inclusion formation and radionuclide production (Desch et al. 2010)
Ryota FUKAI Ultra-high precision Nd isotopic analysis for ordinary chondrites
December 2 Saya KAGAMI Determination of accurate Sm and Nd concentrations in spike solutions and development of mineral separation method
Hisashi ASANUMA
(Tokyo Tech)
Temporal and spatial relationships between schist units on Anglsey-Lleyn
December 9 Minato TOBITA Pb purification method from rock samples with two stage column separation
Syo HASEGAWA Sr isotope heterogeneity of ordinary chondrites and enstatite chondrites
December 16 Wataru FUJISAKI Osmium isotope composition in the deep pelagic Panthalassa ocean during the Toarcian Oceanic Anoxic Event: Relationships between Karoo-Ferrar volcanism and climatic-biologic changes
Ryota MORIWAKI Lead isotope measurements in thermal ionization mass spectrometry
January 13 Minato TOBITA U-Th-Pb systematics of martian meteorite Zagami
Syo HASEGAWA Sr isotope heterogeneity of ordinary chondrites and enstatite chondrites
January 20 Tomohiro USUI Meteoritic evidence for a previously unrecognized hydrogen reservoir on Mars
Yusuke FUKAMI Deveropment of precise Pb isotope analysis for small amount of samples using double spike TIMS
January 27 Kunihiro MYOJO Strontium isotope heterogeneity in CAIs from Allende. Additional data from spinel-pyroxene rich inclusion.
Ryota FUKAI High precision neodymium isotopic analysis using dynamic multicollection method
February 3 Wataru OKUI Research regarding Allende chondrule precursor material
Saya KAGAMI The development of mineral separation method for eucrite samples by using "selFrag."
February 10 Wataru FUJISAKI Osmium isotope composition in the deep pelagic Panthalassa ocean during the Toarcian Oceanic Anoxic Event: Relationships between Karoo-Ferrar volcanism and climatic biologic changes