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Keiko Koshida

University of Tokyo

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Publication

Featured researches published by Keiko Koshida.

Tectonophysics | 2015

Geology of the Eoarchean, > 3.95 Ga, Nulliak supracrustal rocks in the Saglek Block, northern Labrador, Canada: The oldest geological evidence for plate tectonics

Tsuyoshi Komiya; Shinji Yamamoto; Shogo Aoki; Yusuke Sawaki; Akira Ishikawa; Takayuki Tashiro; Keiko Koshida; Masanori Shimojo; Kazumasa Aoki

Gondwana Research | 2016

Recognizing OIB and MORB in accretionary complexes: A new approach based on ocean plate stratigraphy, petrology and geochemistry

Inna Safonova; Shigenori Maruyama; Satoru Kojima; Tsuyoshi Komiya; S.K. Krivonogov; Keiko Koshida

Precambrian Research | 2016

Occurrence and geochronology of the Eoarchean, ~3.9 Ga, Iqaluk Gneiss in the Saglek Block, northern Labrador, Canada: evidence for the oldest supracrustal rocks in the world

Masanori Shimojo; Shinji Yamamoto; Shuhei Sakata; Takaomi D. Yokoyama; Kenshi Maki; Yusuke Sawaki; Akira Ishikawa; Kazumasa Aoki; Shogo Aoki; Keiko Koshida; Takayuki Tashiro; Takafumi Hirata; Tsuyoshi Komiya

Precambrian Research | 2016

Petrology and geochemistry of mafic rocks in the Acasta Gneiss Complex: Implications for the oldest mafic rocks and their origin

Keiko Koshida; Akira Ishikawa; Hikaru Iwamori; Tsuyoshi Komiya

Geoscience frontiers | 2017

A prolonged granitoid formation in Saglek Block, Labrador: Zonal growth and crustal reworking of continental crust in the Eoarchean

Tsuyoshi Komiya; Shinji Yamamoto; Shogo Aoki; Keiko Koshida; Masanori Shimojo; Yusuke Sawaki; Kazumasa Aoki; Shuhei Sakata; Takaomi D. Yokoyama; Kenshi Maki; Akira Ishikawa; Takafumi Hirata

Japan Geoscience Union | 2017

Geochemistry and Re-Os and 146 Sm- 142 Nd isotope systematics of mafic rocks in the Acasta Gneiss Complex: Discovery of the oldest terrestrial rock and implications for the Earth-forming materials

Tsuyoshi Komiya; Keiko Koshida; Akira Ishikawa; Katsuhiko Suzuki

Japan Geoscience Union | 2016

Highly siderophile element variations in the Ontong Java Plateau basalts

Akira Ishikawa; Atsushi Utsunomiya; Keiko Koshida; M. L. G. Tejada; Tsuyoshi Komiya; Katsuhiko Suzuki; Takashi Sano

Annual Meeting of the Geological Society of Japan The 122nd Annual Meeting(2015' Nagano) | 2015

The oldest supracrustal rocks: Implications for early earth evolution

Tsuyoshi Komiya; Shinji Yamamoto; Keiko Koshida; Shogo Aoki; Takayuki Tashiro; Akira Ishikawa

Annual Meeting of the Geological Society of Japan The 122nd Annual Meeting(2015' Nagano) | 2015

Re-Os systematics on the Acasta mafic rocks: Implications for the Hadean mantle evolution

Keiko Koshida; Akira Ishikawa; Katsuhiko Suzuki; Tsuyoshi Komiya

Japan Geoscience Union | 2014

Timing of late veneer on Earth: a siderophile element perspective

Akira Ishikawa; Keiko Koshida; Katsuhiko Suzuki; Tsuyoshi Komiya

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Tsuyoshi Komiya

University of Tokyo

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Akira Ishikawa

University of Tokyo

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Katsuhiko Suzuki

Japan Agency for Marine-Earth Science and Technology

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Shinji Yamamoto

University of Tokyo

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Shogo Aoki

University of Tokyo

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Kazumasa Aoki

University of Tokyo

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Masanori Shimojo

University of Tokyo

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Takayuki Tashiro

University of Tokyo

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Yusuke Sawaki

Tokyo Institute of Technology

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Kenshi Maki

Kyoto University

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