Výsledky vyhledávání - "Hiroo, Kagami"

Contributions of slab fluid and sediment melt components to magmatism in the Mariana Arc–Trough system: Evidence from geochemical compositions and Sr, Nd, and noble gas isotope systematics

Autor: Keisuke Nagao, Teruaki Ishii, Yasuo Ikeda, Daisuke Matsumoto, Makoto Arima, Sherman H. Bloomer, Robert J. Stern, Hiroo Kagami

Publikováno v: Island Arc. 25:253-273

This study presents new major and trace element, mineral, and Sr, Nd, and noble gas isotope geochemical analyses of basalts, gabbro, and clinopyroxenite from the Mariana Arc (Central Islands and Southern Seamount provinces) including the forearc, and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::79df712ca282ed4dfcf450fec374bd3a
https://doi.org/10.1111/iar.12150

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Sm–Nd and Rb–Sr isotope geochemistry and petrology of Abu Hamamid intrusion, Eastern Desert, Egypt: An Alaskan-type complex in a backarc setting

Autor: Masako Yoshikawa, Shoji Arai, Hassan M. Helmy, Tomoyuki Shibata, Hiroo Kagami

Publikováno v: Precambrian Research. 258:234-246

a b s t r a c t Alaskan-type complexes are uplifted fragments of the deep levels of island arcs. These complexes usually reveal chemical diversity that cannot be assigned to a unique setting within arcs. Here we report the petrology, Rb-Sr and Sm-Nd

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0705d2a969375b9c7022a776cf83c235
https://doi.org/10.1016/j.precamres.2015.01.002

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Anatomy of the Cretaceous Hobenzan pluton, SW Japan: Internal structure of a small zoned pluton, and its genesis

Autor: Yasuo Ogita, Yoshio Takahashi, Hiroo Kagami, Teruyoshi Imaoka, Toshiyuki Ikawa, Kazuo Nakashima, Atsushi Kamei, Tetsumaru Itaya, Yasutaka Hayasaka

Publikováno v: Lithos. :81-103

Field, petrographic, geochemical, and K–Ar and U–Pb age data were used to elucidate the internal structure of the Cretaceous Hobenzan pluton, SW Japan, and the processes which generated that structure. The pluton is elongated E–W with dimension

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fba9509e984efb0c6facc5535ae08ccc
https://doi.org/10.1016/j.lithos.2014.09.002

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Petrology and Sm–Nd dating of the Genina Gharbia Alaskan-type complex (Egypt): Insights into deep levels of Neoproterozoic island arcs

Autor: Masako Yoshikawa, Yasser Abd El-Rahman, Hassan M. Helmy, Tomoyuki Shibata, Shoji Arai, Hiroo Kagami, Akihiro Tamura

Publikováno v: Lithos. :263-280

The deep levels of Neoproterozoic island arcs are poorly known due to limited accessibility. The Genina Gharbia Alaskan-type complex (south Eastern Desert, Egypt) is the remains of a magma chamber that crystallized at the base (crust–mantle boundar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a75d5602165d516bc9434589af3fa7c0
https://doi.org/10.1016/j.lithos.2014.03.028

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Sr and Nd isotopic compositions of mafic xenoliths and volcanic rocks from the Oga Peninsula, Northeast Japan Arc: Genetic relationship between lower crust and arc magmas

Autor: Shiho Abe, Azusa Kondo, Hiroo Kagami, Takahiko Maruyama, Akiyuki Narita, Masatsugu Yamamoto, Rika Takeda

Publikováno v: Lithos. :88-106

Whole-rock and constituent hornblende and plagioclase geochemical and isotopic compositions of 52 mafic xenoliths from the Ichinomegata maar in the Oga Peninsula, located on the backarc side of Northeastern Japan, were investigated to further underst

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d8a7c74f82b645ae83d9122b78e2e8d2
https://doi.org/10.1016/j.lithos.2012.12.002

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Isotopic ages of the Pankenushi olivine gabbro complex, Hidaka magmatic belt, central Hokkaido, Japan: implications for the tectonic setting of Hidaka magmatism

Autor: Yoshiyuki Kuramoto, Hiroo Kagami, Tetsumaru Itaya, Ryoichi Zeniya, Jinichiro Maeda

Publikováno v: The Journal of the Geological Society of Japan. 117:204-216

日高火成活動帯のパンケヌシ斑れい岩体からK-Ar角閃石年代（17.5±0.6 Ma），K-Ar黒雲母年代（17.3±0.4 Ma），Rb-Sr 黒雲母年代（17.3±0.1 Ma）を得た．これらの年代値と既に報告されているU－Pb�

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a46dffcbb05c95b0b5bf7e3ecefe1f39
https://doi.org/10.5575/geosoc.117.204

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A procedure for calculating a consistent set of closure temperatures and cooling rate using Dodson’s formula

Autor: Yoshiyuki Kuramoto, Hiroo Kagami, Ryoichi Zeniya, Tetsumaru Itaya, Jinichiro Maeda

Publikováno v: The Journal of the Geological Society of Japan. 117:99-103

The cooling rate of a geological material is generally calculated using two isotopic ages with different closure temperatures; however, the closure temperature is itself dependent on the cooling rate. Here we present a simple procedure for calculatin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9b2fe0bdef2756a6b26df75ae6d782fa
https://doi.org/10.5575/geosoc.117.99

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K–Ar age and geochemistry of the SW Japan Paleogene cauldron cluster: Implications for Eocene–Oligocene thermo-tectonic reactivation

Autor: Tetsumaru Itaya, Hiroo Kagami, Teruyoshi Imaoka, M. Takemoto, Kazuo Kiminami, K. Nishida, Shigeru Iizumi, Toshiyuki Ikawa

Publikováno v: Journal of Asian Earth Sciences. 40:509-533

Systematic K–Ar dating and geochemical analyses of Paleogene cauldrons in the Sanin Belt of SW Japan have been made to explore the relationship between the timing of their formation and the Paleogene subduction history of SW Japan documented in the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8bcb60f2ce1ee5a83379081168a9a695
https://doi.org/10.1016/j.jseaes.2010.10.002

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