S
Shigeko Togashi
Researcher at National Institute of Advanced Industrial Science and Technology
Publications - 23
Citations - 1895
Shigeko Togashi is an academic researcher from National Institute of Advanced Industrial Science and Technology. The author has contributed to research in topics: Plagioclase & Partial melting. The author has an hindex of 11, co-authored 22 publications receiving 1666 citations.
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Journal ArticleDOI
Further characterisation of the 91500 zircon crystal
Michael Wiedenbeck,John M. Hanchar,William H. Peck,Paul J. Sylvester,John W. Valley,Martin J. Whitehouse,Andreas Kronz,Yuichi Morishita,Lutz Nasdala,Jens Fiebig,Ian A. Franchi,J.-P. Girard,Richard C. Greenwood,R. W. Hinton,Noriko T. Kita,Paul R.D. Mason,Marc D. Norman,M. Ogasawara,Philip M. Piccoli,Dieter Rhede,Hisao Satoh,B. Schulz-Dobrick,Øyvind Skår,Mj. Spicuzza,Kentaro Terada,Andrew G. Tindle,Shigeko Togashi,Torsten Vennemann,Q. Xie,Yong-Fei Zheng +29 more
TL;DR: In this article, the results from a second characterisation of the 91500 zircon, including data from electron probe microanalysis, laser ablation inductively coupled plasma-mass spectrometer (LA-ICP-MS), secondary ion mass spectrometry (SIMS), and laser fluorination analyses, were reported.
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A short duration of chondrule formation in the solar nebula: evidence from 26Al in Semarkona ferromagnesian chondrules
TL;DR: In this paper, a secondary ion mass spectrometer was used to study the 26 Al/26 Mg systems of five ferromagnesian chondrules from the least metamorphosed ordinary chondrite Semarkona (LL3.0) and the results showed that the chondrule formation ages are ∼2 My younger than those of CAIs.
Journal ArticleDOI
The relative formation ages of ferromagnesian chondrules inferred from their initial aluminum-26/aluminum-27 ratios
Smail Mostefaoui,Noriko T. Kita,Shigeko Togashi,Shogo Tachibana,Hiroko Nagahara,Yuichi Morishita +5 more
TL;DR: In this paper, the authors performed a high precision SIMS 26Al-26Mg isotopic study for 11 ferromagnesian chondrules from the highly unequilibrated ordinary chondrite Bishunpur (LL3.1).
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Origin of ureilites inferred from a SIMS oxygen isotopic and trace element study of clasts in the Dar al Gani 319 polymict ureilite
Noriko T. Kita,Yukio Ikeda,Shigeko Togashi,Yongzhong Liu,Yuichi Morishita,Michael K. Weisberg,Michael K. Weisberg +6 more
TL;DR: In this paper, secondary ion mass spectrometer (SIMS) oxygen isotope analyses were performed on 24 clasts, representing 9 clast types, in the Dar al Gani (DaG) 319 polymict ureilite with precisions better than 1
Journal ArticleDOI
Young upper crustal chemical composition of the orogenic Japan Arc
Shigeko Togashi,Noboru Imai,Yasuko Okuyama-Kusunose,Tsuyoshi Tanaka,Takashi Okai,Takeshi Koma,Yasuaki Murata +6 more
TL;DR: A geochemical estimate of the young (mainly Paleozoic age to present) upper crust of the Japan Arc shows a dacitic composition in contrast to the idea that andesite is predominant in active orogenic arcs.