Termination of intra‐arc rifting at ca 16 Ma in the Southwest Japan arc: The tectonostratigraphy of the Hokutan Group
Termination of intra‐arc rifting at ca 16 Ma in the Southwest Japan arc: The tectonostratigraphy of the Hokutan Group
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日本西南岛弧弧内裂谷在约 16Ma 时终止:北丹群的构造地层学
DOI:
10.1111/iar.12366
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发表时间:
2020
期刊:
影响因子:
1.5
通讯作者:
A. Yamaji
中科院分区:
文献类型:
--
作者:
Toshiki Haji;A. Yamaji
Miocene intra‐arc rifting associated with the opening of the Japan Sea formed grabens in several areas in Southwest (SW) Japan, but the extensional tectonics of the arc are still not well understood. In this study, we first document the tectonostratigraphy of the Hokutan Group in the northwestern part of the Kinki district, and demonstrate the termination of extensional tectonics at ca 16.5 Ma, as inferred from grabens in the lower part of the group being unconformably overlain by sediments of the upper part. Second, we review early Miocene grabens in SW Japan to suggest that intra‐arc rifting was abandoned at ca 16 Ma, essentially simultaneously with the end of rotation of the SW Japan arc as evidenced by paleomagnetic studies. The lesser numbers of grabens and reduced thicknesses of graben fills suggest that extensional deformation of the SW Japan arc was significantly weaker than that of the Northeast (NE) Japan arc, which was broken into blocks, indicating various degrees of paleomagnetic rotation within NE Japan. The weak deformation has allowed paleomagnetic studies to infer the coherent rotation of the SW Japan arc.
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DOI:
--
发表时间:
2002
期刊:
Tectonophysics 355
影响因子:
--
作者:
Sato;H;Hirata;N;Iwasaki;T. et al.
通讯作者:
T. et al.
DOI:
--
发表时间:
2004
期刊:
Earth Planets Space 56
影响因子:
--
作者:
Kato;N.;Sato;H.;Imaizumi;T.;Ikeda;Y.;Okada;S.;Kagohara;K.;Kawanaka;T.;Kasahara;K
通讯作者:
K
DOI:
--
发表时间:
2004
期刊:
The Foundation Engineering & Equipment vol.32, No.3
影响因子:
--
作者:
Nakagawa;K.
通讯作者:
K.
DOI:
--
发表时间:
2005
期刊:
地質学雑誌 111
影响因子:
--
作者:
小林博文;山路 敦;増田富士雄
通讯作者:
増田富士雄