Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Norikatsu, Akizawa"'
Autor:
Norikatsu Akizawa, Kazuhito Ozawa, Tetsu Kogiso, Akira Ishikawa, Akira Miyake, Yohei Igami, Simon R. Wallis, Takayoshi Nagaya, Chihiro Ohshima, Ryo Fujita, Tatsuhiko Kawamoto, Akihiro Tamura, Tomoaki Morishita, Shoji Arai, Atsushi Yasumoto
Publikováno v:
Progress in Earth and Planetary Science, Vol 11, Iss 1, Pp 1-28 (2024)
Abstract Garnet peridotite xenoliths have been rarely reported from suboceanic mantle. Petrographic and geochemical characteristics of garnet-bearing oceanic peridotite xenoliths provide precious information on dynamics of the suboceanic lithosphere
Externí odkaz:
https://doaj.org/article/e5f360ae616c4a0d9d465dfc8e7d7904
Publikováno v:
Progress in Earth and Planetary Science, Vol 10, Iss 1, Pp 1-19 (2023)
Abstract Troctolites were recovered during Integrated Ocean Drilling Program Expedition 345 at the Hess Deep Rift, next to fast-spreading East Pacific Rise. These troctolites are divided into three groups based on textural differences: coarse-grained
Externí odkaz:
https://doaj.org/article/d0324e8d5e874bcba0eb9fa7db4f5cc5
Autor:
Kazuto Mikuni, Naoto Hirano, Norikatsu Akizawa, Junji Yamamoto, Shiki Machida, Akihiro Tamura, Yuuki Hagiwara, Tomoaki Morishita
Publikováno v:
Progress in Earth and Planetary Science, Vol 9, Iss 1, Pp 1-22 (2022)
Abstract The lithospheric mantle, formed at the mid-ocean ridge as a residue of crustal production, comprises theoretically depleted peridotite, but more fertile components (e.g., lherzolite and pyroxenite) have been reported, creating an enigmatic p
Externí odkaz:
https://doaj.org/article/0c2b37e4436f405395a88acae07cc715
Publikováno v:
Royal Society Open Science, Vol 10, Iss 6 (2023)
Sagittal otoliths, typically composed of aragonite, are frequently laid down rather as vaterite during growth in hatchery-reared fish populations. Sagittal vateritization is believed to impair individual hearing/balancing abilities, but the causal me
Externí odkaz:
https://doaj.org/article/5b269123cf7b41b5b7e20328471a9559
Autor:
Norikatsu Akizawa, Yasuhiko Ohara, Kyoko Okino, Osamu Ishizuka, Hiroyuki Yamashita, Shiki Machida, Alessio Sanfilippo, Valentin Basch, Jonathan E. Snow, Atlanta Sen, Ken-ichi Hirauchi, Katsuyoshi Michibayashi, Yumiko Harigane, Masakazu Fujii, Hisashi Asanuma, Takafumi Hirata
Publikováno v:
Progress in Earth and Planetary Science, Vol 8, Iss 1, Pp 1-24 (2021)
Abstract This paper explores the evolutional process of back-arc basin (BAB) magma system at final spreading stage of extinct BAB, Shikoku Basin (Philippine Sea) and assesses its tectonic evolution using a newly discovered oceanic core complex, the M
Externí odkaz:
https://doaj.org/article/82dfe0de66d04ffabf0571d7db3be4f6
Autor:
Norikatsu Akizawa, Naoto Hirano, Shiki Machida, Akira Ishikawa, Yuka Niwa, Gen Shimoda, Kazutaka Yasukawa, Kenji M. Matsuzaki, Chiori Tamura, Junji Kaneko
Publikováno v:
Data in Brief, Vol 45, Iss , Pp 108764- (2022)
Rock and sediment samples were collected from petit-spots in the northwestern Pacific. The sampling was conducted using deep-submergence vehicle (DSV) Shinkai 6500 and its mother ship, research vessel (RV) Yokosuka during YK20-14S and YK21-07S cruise
Externí odkaz:
https://doaj.org/article/9f2fa8d6cedc481fb07d90237575aa23
Autor:
Kazuto Mikuni, Naoto Hirano, Shiki Machida, Hirochika Sumino, Norikatsu Akizawa, Akihiro Tamura, Tomoaki Morishita, Yasuhiro Kato
Publikováno v:
Solid Earth Discussions; 8/29/2023, p1-48, 48p
Publikováno v:
The Canadian Mineralogist. 59:1731-1753
The continental margin is of profound importance as it records continental growth by accretion of orogenic magmas and following continental rifting. A high degree of mantle melting due to hydrous fluid input is expected to simultaneously stimulate co
Publikováno v:
Minerals, Vol 10, Iss 9, p 806 (2020)
Rare nickel hydroxide-hydroxyl carbonate, theophrastite (Ni(OH)2)-zaratite (Ni3(CO3)(OH)4·4H2O) aggregates were found from a partially serpentinized dunite from Fujiwara, the Sanbagawa metamorphic belt of high-pressure intermediate type, Japan. The
Externí odkaz:
https://doaj.org/article/2b5c4cedde864570b3b241fb7443a697
Publikováno v:
Minerals, Vol 10, Iss 3, p 217 (2020)
The role of water-rich solutions in the formation of chromitites has been the matter of controversy. We found small chromite concentrations (chromitites) in diopsidites, precipitated from high-temperature hydrothermal fluids, in the mantle to the cru
Externí odkaz:
https://doaj.org/article/4d190c2ca9694cddac44bbe80c0369f6