Age of the Taishu Group, southwestern Japan, and implications for the origin and evolution of the Japan Sea
The Taishu Group, a marine formation with a thickness of >5400 m, crops out on Tsushima Island, located in the southwestern Japan Sea. The group, which is generally regarded as early Eocene to early Miocene in age, provides important information about the tectonic setting of the Japan Sea. In thi...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
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Blackwell Publishing Asia
2014
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| Online Access: | http://hdl.handle.net/20.500.11937/7991 |
| _version_ | 1848745527874682880 |
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| author | Ninomiya, T. Shimoyama, S. Watanabe, K. Horie, K. Dunkley, Daniel Shiraishi, K. |
| author_facet | Ninomiya, T. Shimoyama, S. Watanabe, K. Horie, K. Dunkley, Daniel Shiraishi, K. |
| author_sort | Ninomiya, T. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The Taishu Group, a marine formation with a thickness of >5400 m, crops out on Tsushima Island, located in the southwestern Japan Sea. The group, which is generally regarded as early Eocene to early Miocene in age, provides important information about the tectonic setting of the Japan Sea. In this study, we present new SHRIMP U–Pb dates for igneous zircons from the Kunehama Tuff, which is in the basal part of the Taishu Group, and the Oobaura Tuff, which is in the uppermost part of the group. Results show that the Taishu Group was deposited rapidly, during the short interval of 17.9–15.9 Ma (early–middle Miocene), and is equivalent to other early–middle Miocene strata found in the Japan Sea region. Our results provide new constraints on the geological history of the Japan Sea and its islands. |
| first_indexed | 2025-11-14T06:18:47Z |
| format | Journal Article |
| id | curtin-20.500.11937-7991 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:18:47Z |
| publishDate | 2014 |
| publisher | Blackwell Publishing Asia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-79912017-09-13T14:35:06Z Age of the Taishu Group, southwestern Japan, and implications for the origin and evolution of the Japan Sea Ninomiya, T. Shimoyama, S. Watanabe, K. Horie, K. Dunkley, Daniel Shiraishi, K. Taishu Group Japan Sea early to middle Miocene SHRIMP U–Pb dating The Taishu Group, a marine formation with a thickness of >5400 m, crops out on Tsushima Island, located in the southwestern Japan Sea. The group, which is generally regarded as early Eocene to early Miocene in age, provides important information about the tectonic setting of the Japan Sea. In this study, we present new SHRIMP U–Pb dates for igneous zircons from the Kunehama Tuff, which is in the basal part of the Taishu Group, and the Oobaura Tuff, which is in the uppermost part of the group. Results show that the Taishu Group was deposited rapidly, during the short interval of 17.9–15.9 Ma (early–middle Miocene), and is equivalent to other early–middle Miocene strata found in the Japan Sea region. Our results provide new constraints on the geological history of the Japan Sea and its islands. 2014 Journal Article http://hdl.handle.net/20.500.11937/7991 10.1111/iar.12072 Blackwell Publishing Asia restricted |
| spellingShingle | Taishu Group Japan Sea early to middle Miocene SHRIMP U–Pb dating Ninomiya, T. Shimoyama, S. Watanabe, K. Horie, K. Dunkley, Daniel Shiraishi, K. Age of the Taishu Group, southwestern Japan, and implications for the origin and evolution of the Japan Sea |
| title | Age of the Taishu Group, southwestern Japan, and implications for the origin and evolution of the Japan Sea |
| title_full | Age of the Taishu Group, southwestern Japan, and implications for the origin and evolution of the Japan Sea |
| title_fullStr | Age of the Taishu Group, southwestern Japan, and implications for the origin and evolution of the Japan Sea |
| title_full_unstemmed | Age of the Taishu Group, southwestern Japan, and implications for the origin and evolution of the Japan Sea |
| title_short | Age of the Taishu Group, southwestern Japan, and implications for the origin and evolution of the Japan Sea |
| title_sort | age of the taishu group, southwestern japan, and implications for the origin and evolution of the japan sea |
| topic | Taishu Group Japan Sea early to middle Miocene SHRIMP U–Pb dating |
| url | http://hdl.handle.net/20.500.11937/7991 |