J-GLOBAL         Last updated: Apr 11, 2019 at 15:58
Hirosaki University
Graduate School of Science and Technology
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Research Associate
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Jun Arimoto, Reishi Takashima, Hiroshi Nishi, Toshiro Yamanaka, Toshiro Yamanaka, Yuji Orihashi, Yuji Orihashi, Shota Jo, Shota Jo, Koshi Yamamoto, Keita Umetsu, Keita Umetsu
Cretaceous Research   92 264-278   Dec 2018
© 2018 Elsevier Ltd Determining detailed geologic ages for pre-Quaternary non-marine and shallow marine siliciclastic successions has generally been difficult due to the rare occurrence of age-diagnostic fossils. In this study, we present the firs...
Pablo Grosse, Yuji Orihashi, Yuji Orihashi, Silvina R. Guzmán, Silvina R. Guzmán, Hirochika Sumino, Hirochika Sumino, Keisuke Nagao, Keisuke Nagao
Bulletin of Volcanology   80    May 2018
© 2018, Springer-Verlag GmbH Germany, part of Springer Nature. Volcanoes can stay dormant for much longer than 10 ka and hence many Quaternary volcanoes lacking Holocene activity have the potential to become active. Reconstructing the eruptive his...
Hayato Ueda, Sho Kimura, Takahiro Saito, Yumi Takano, Natsumi Iizuka, Yuji Orihashi, Yuji Orihashi
Island Arc      Jan 2018
© 2018 John Wiley & Sons Australia, Ltd Identifying and examining geological processes that have occurred in sediment-starved trenches of ancient non-accretionary subduction zones exposed on land are still challenging, because such style of subd...
Shinjoe Hironao, Furukawa Kuniyuki, Orihashi Yuji, Hokanishi Natsumi, Wada Yutaka
The Journal of the Geological Society of Japan   124(7) 533-538   2018
<p>The Hachiya Formation of the Kani Group in southern Gifu Prefecture is the oldest sediment in the eastern part of the Setouchi Geologic Province, and is composed mainly of volcaniclastic rocks deposited in a nonmarine basin. We present the resu...
Geological Magazine   1-14   Nov 2017
Copyright © Cambridge University Press 2017 The upper Palaeozoic succession (Pyeongan Supergroup) in central eastern Korea is well correlated with the equivalent successions distributed in North China, suggestive of the Korean upper Palaeozoic bei...
Tiago Jalowitzki, Fernanda Gervasoni, Rommulo V. Conceição, Yuji Orihashi, Gustavo W. Bertotto, Hirochika Sumino, Manuel E. Schilling, Keisuke Nagao, Diego Morata, Diego Morata, Paul Sylvester
Lithos   292-293 179-197   Nov 2017
© 2017 Elsevier B.V. In subduction zones, ultramafic xenoliths hosted in alkaline basalts can yield significant information about the role of potential slab-derived components in the subcontinental lithospheric mantle (SCLM). Chemical and isotopic...
T. Medialdea, L. Somoza, F. J. González, J. T. Vázquez, C. de Ignacio, H. Sumino, O. Sánchez-Guillamón, Y. Orihashi, R. León, D. Palomino
Geochemistry, Geophysics, Geosystems   18 3138-3164   Aug 2017
© 2017. American Geophysical Union. All Rights Reserved. New seismic profiles, bathymetric data, and sediment-rock sampling document for the first time the discovery of hydrothermal vent complexes and volcanic cones at 4800–5200 m depth related to...
Kentaro Hattori, Shuhei Sakata, Michitaka Tanaka, Yuji Orihashi, Takafumi Hirata, Takafumi Hirata
Journal of Analytical Atomic Spectrometry   32 88-95   Jan 2017
© 2017 The Royal Society of Chemistry. Precise zircon U-Pb age determinations have been made on Plešovice zircon using laser ablation-multiple ion counting-inductively coupled plasma-mass spectrometry (LA-MIC-ICP-MS). To achieve high precision and...
ICHIHARA Mie, ADAM Claudia, VIDAL Valérie, GROSSE Pablo, MIBE Kenji, ORIHASHI Yuji
Journal of Geography (Chigaku Zasshi)   126(2) 181-193   2017
<p> Anomalous arc volcanoes tend to exist where a linear topographic feature (fracture zone, line of seamounts, or ridge) on the oceanic plate is subducting. "Dots-and-lines tectonics" are proposed for clarifying this tendency and understanding th...
Shinjoe Hironao, Orihashi Yuji
The Journal of the Geological Society of Japan   123(6) 423-431   2017
<p>The Ohno Volcanic Rocks in eastern Kyusyu occur at the western tip of the Setouchi Volcanic Rocks. Previously reported K-Ar ages of the Ohno Volcanic Rocks range from 10.5 to 15.9 Ma. Here we present the results of laser ablation-inductively co...
Tiago Jalowitzki, Tiago Jalowitzki, Hirochika Sumino, Hirochika Sumino, Rommulo V. Conceição, Yuji Orihashi, Keisuke Nagao, Keisuke Nagao, Gustavo W. Bertotto, Eduardo Balbinot, Manuel E. Schilling, Fernanda Gervasoni
Earth and Planetary Science Letters   450 263-273   Sep 2016
© 2016 Elsevier B.V. Patagonia, in the Southern Andes, is one of the few locations where interactions between the oceanic and continental lithosphere can be studied due to subduction of an active spreading ridge beneath the continent. In order to ...
Taejin Choi, Yong Il Lee, Yuji Orihashi
Geoscience Frontiers   7 707-714   Sep 2016
© 2016 China University of Geosciences (Beijing) and Peking University U-Pb analyses were carried out on detrital zircon grains from major river-mouth sediments draining South Korea to infer provenance characteristics and the crustal growth histor...
Gustavo Walter Bertotto, Matías Hernán Hirch, Alexis Daniel Ponce, Yuji Orihashi, Hirochika Sumino
Revista de la Asociacion Geologica Argentina   73 330-340   Jan 2016
© 2016, Asociacion Geologica Argentina. All rights reserved. The Toscales eruptive center is located in the southeast of the Mendoza province and represents one of the farthest manifestations of Cenozoic back-arc volcanism from the subduction zone...
Fatemeh Nouri, Hossein Azizi, Jan Golonka, Yoshihiro Asahara, Yuji Orihashi, Koshi Yamamoto, Motohiro Tsuboi, Ryo Anma
Tectonophysics   671 151-172   Mar 2016
© 2015 Elsevier B.V. Intermediate to felsic volcanic and granitic rocks with high Na2O concentrations (5.2-9.1 wt.%) are widely distributed in the Harsin area along the Zagros thrust zone in western Iran. Most of these rocks are classified as low-...
Yong Il Lee, Taejin Choi, Hyoun Soo Lim, Yuji Orihashi
Palaeogeography, Palaeoclimatology, Palaeoecology   441 770-786   Jan 2016
© 2015 Elsevier B.V. The paleogeographic configuration of continental blocks around East Gondwana during the Neoproterozoic-early Cambrian is controversial. This study reports the U-Pb ages of detrital zircons and Nd isotopic composition of the Ne...
新正 裕尚, 折橋 裕二, 角井 朝昭
東京経済大学人文自然科学論集   (139) 21-31   2016
In Sanuki plain of NE Shikoku island, many small volcanic bodies belonging to Setouchi Volcanic Rocks are distributed. We report new 24 whole rock compositions of felsic members of the Setouchi Volcanic Rocks analyzed using XRF.Some of the samples...
Ki Cheol Shin, Ryo Anma, Takanori Nakano, Yuji Orihashi, Shin Ichi Ike, Shin Ichi Ike
Episodes   38 283-297   Dec 2015
The late Miocene-early Pliocene Taitao ophiolite is exposed ∼30 km southeast of the Chile triple junction, where a spreading center of the Chile ridge system is subducting underneath the South America plate. This unique tectonic setting provides a...
A. M. Agashev, Y. Orihashi, N. P. Pokhilenko, I. V. Serov, A. V. Tolstov, S. Nakai
Geochemical Journal   50 431-438   Jan 2016
© 2016 by The Geochemical Society of Japan. This paper presents new data related to the emplacement ages of the Amakinskaya and Taezhnaya kimberlites of the Mirny field, Siberia, located in the southern part of the Yakutian diamondiferous province...
新正 裕尚, 折橋 裕二, 外西 奈津美
東京経済大学人文自然科学論集   (138) 91-98   2016
Whole rock major and trace element compositions analyzed by XRF are reportedfor two andesites and three rhyolitic welded tuffs including Shiraiwasanpyroclastic flow deposit from Ohno volcanic rocks, one of the member of theSetouchi Volcanic Rocks ...