Zobrazeno 1 - 10
of 102
pro vyhledávání: '"Yo-ichiro Otofuji"'
Autor:
Yutaka Yoshimura, Osamu Ishizuka, Toshitsugu Yamazaki, Hyeon‐Seon Ahn, Tesfaye Kidane, Yuhji Yamamoto, Shun Sekimoto, Takashi Sano, Yo‐ichiro Otofuji
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 8, Pp n/a-n/a (2023)
Abstract The Ethiopia‐Yemen flood basalts are spatially zoned with progressively lower TiO2 lavas from near the Afar depression toward the margins. The timing and rate of emplacement of low TiO2 (LT) lavas are poorly known compared with the ultra
Externí odkaz:
https://doaj.org/article/4e8da94038ba404e8f4be77df69ed1e5
Autor:
Yutaka Yoshimura, Toshitsugu Yamazaki, Yuhji Yamamoto, Hyeon‐Seon Ahn, Tesfaye Kidane, Yo‐ichiro Otofuji
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 21, Iss 12, Pp n/a-n/a (2020)
Abstract We conducted a geomagnetic paleointensity study of lava flows at ∼30 Ma distributed in the Lima‐Limo section of the Afro‐Arabian Large Igneous Province. The Tsunakawa‐Shaw method, which has built‐in low‐temperature demagnetizatio
Externí odkaz:
https://doaj.org/article/7b2ba7a054014804baae7c1605c3c7da
Autor:
Yutaka Yoshimura, Osamu Ishizuka, Toshitsugu Yamazaki, Hyeon-Seon Ahn, Tesfaye Kidane, Yuhji Yamamoto, Shun Sekimoto, Yo-Ichiro Otofuji
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a001e5ffd50daa2ee04ee791ccf4ae95
https://doi.org/10.1002/essoar.10512871.1
https://doi.org/10.1002/essoar.10512871.1
Autor:
Naoto Ishikawa, Yutaka Yoshimura, Hyeon-Seon Ahn, Tesfaye Kidane, Yuhji Yamamoto, Yo-ichiro Otofuji
Publikováno v:
Geophysical Journal International. 225:311-328
SUMMARY We present high-resolution palaeomagnetic and rock magnetic results from 92 successive volcanic units on a 2 km tall Lima Limo (LL) section of the Oligocene Ethiopian flood basalts (OEFB). A total of 85 well-defined flow-mean characteristic r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3fc358cbc996ff3ca4f7f75e1234de00
https://doi.org/10.1093/gji/ggaa557
https://doi.org/10.1093/gji/ggaa557
Autor:
Takafumi Sonehara, Koshi Yagi, Kazumasa Aoki, Shogo Aoki, Hiroyuki Takeshita, Tetsumaru Itaya, Yo-ichiro Otofuji
Publikováno v:
Scientific Reports, Vol 10, Iss 1, Pp 1-13 (2020)
Scientific Reports
Scientific Reports
The Kibi Plateau in the active Japanese Islands consists of mainly Permian to Cretaceous rocks that have been deeply weathered into a red soil, comprising a peneplain with U-shaped valley. Systematic geological analyses of the Eocene fluvial deposits
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::359596f45252553eeec00e2a1de7e1e9
http://link.springer.com/article/10.1038/s41598-020-60448-x
http://link.springer.com/article/10.1038/s41598-020-60448-x
Autor:
Yutaka Yoshimura, Osamu Ishizuka, Toshitsugu Yamazaki, Yuhji Yamamoto, Hyeon-Seon Ahn, Tesfaye Kidane, Yo-ichiro Otofuji, Shun Sekimoto
The Earth's core is constantly and efficiently cooled by mantle convection. The heat flux transferred from the core to the mantle through the core-mantle boundary (CMB) is critical for understanding the dynamics of solid Earth. Although it is difficu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab6624e03cc0def6b951621bf4450b2c
https://doi.org/10.21203/rs.3.rs-1186868/v1
https://doi.org/10.21203/rs.3.rs-1186868/v1
Publikováno v:
Physics of the Earth and Planetary Interiors. 287:10-20
Paleointensity variation is investigated for a sequence of andesitic lavas which records the Noma geomagnetic excursion at 6.66 ± 0.45 Ma. Sixty-six samples are collected from 11 lava flows at the Kamegaoka Mountain (31° 21′N, 130° 13′E) on th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a405ffa511922c8e9f6e80f0d322c4b
https://doi.org/10.1016/j.pepi.2018.12.006
https://doi.org/10.1016/j.pepi.2018.12.006
Autor:
Yo-ichiro Otofuji, Toshitsugu Yamazaki, Yuhji Yamamoto, Hyeon-Seon Ahn, Tesfaye Kidane, Yutaka Yoshimura
Publikováno v:
Geochemistry, Geophysics, Geosystems. 21
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea4269d5871ab8d8f7d47df6f1120e08
https://doi.org/10.1029/2020gc009341
https://doi.org/10.1029/2020gc009341
Tectonic evolution of the Malay Peninsula inferred from Jurassic to Cretaceous paleomagnetic results
Autor:
Masako Miki, Yuji T. Moriyama, Koji Uno, Yutaka Wada, Yo-ichiro Otofuji, Maiko P. Arita, Haider Zaman, Kosuke Tsumura, Mustaffa Kamal Shuib, Masanari Miyazaki, Yutaka Yoshimura, Masatoshi Sone
Publikováno v:
Journal of Asian Earth Sciences. 134:130-149
A primary remanent magnetization is identified in the Jurassic-Cretaceous red bed sandstones of the Tembeling Group in Peninsular Malaysia. This high-temperature magnetic component is unblocked at 680–690 °C, revealing a clockwise deflected direct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4be125b0963fbff4ca8fc2f4a5f78f4
https://doi.org/10.1016/j.jseaes.2016.10.007
https://doi.org/10.1016/j.jseaes.2016.10.007
Publikováno v:
Earth and Planetary Science Letters. 554:116656
Serpentinization of mantle peridotite generates magnetite that is able to acquire a remanent magnetization parallel to the ambient geomagnetic field. The paleomagnetic direction of serpentine provides insights as to the timing of serpentinization. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f88a9f41465dba893dd622c7dba34ce
https://doi.org/10.1016/j.epsl.2020.116656
https://doi.org/10.1016/j.epsl.2020.116656