KMS Institute of Vertebrate Paleontology and Paleoanthropology
| Zircon U-Pb ages from tuff beds of the upper Mesozoic Tetori Group in the Shokawa District, Gifu Prefecture, central Japan | |
| Kusuhashi, Nao; Matsumoto, Ai; Murakami, Masaki; Tagami, Takahiro; Hirata, Takafumi; Iizuka, Tsuyoshi; Handa, Takeshi; Matsuoka, Hiroshige; Kusuhashi, N (reprint author), Kyoto Univ, Grad Sch Sci, Dept Geol & Mineral, Kyoto 6068502, Japan. | |
| 2006-09-01 | |
| 发表期刊 | ISLAND ARC
 |
| ISSN | 1038-4871 |
| 卷号 | 15期号:3页码:378-390 |
| 文章类型 | Article |
| 摘要 | The upper Mesozoic Tetori Group contains numerous fossils of plants and marine and non-marine animals. The group has the potential to provide key information to improve our understanding of the Middle Jurassic to Early Cretaceous biota of East Asia. However, the depositional age of the Tetori Group remains uncertain, and without good age constraints, accurate correlation with other areas is very difficult. As a first step in obtaining reliable ages for the formations within the Tetori Group, we used laser ablation-inductively coupled plasma-mass spectrometry to measure the U-Pb ages of zircons collected from tuff beds in the Shokawa district, Takayama City, Gifu Prefecture, central Japan. The youngest reliable U-Pb ages from the tuff beds of the Ushimaru, Mitarai and Okurodani Formations are 130.2 +/- 1.7, 129.8 +/- 1.0 and 117.5 +/- 0.7 Ma, respectively (errors represent 2 SE). These results indicate that the entire Tetori Group in the Shokawa district, which was previously believed to be correlated to the Upper Jurassic to Lower Cretaceous, is in fact correlated to the Lower Cretaceous. The maximum ages of the Ushimaru, Mitarai and Okurodani Formations are late Hauterivian to Barremian, late Hauterivian to Barremian and Barremian to Aptian, respectively.; The upper Mesozoic Tetori Group contains numerous fossils of plants and marine and non-marine animals. The group has the potential to provide key information to improve our understanding of the Middle Jurassic to Early Cretaceous biota of East Asia. However, the depositional age of the Tetori Group remains uncertain, and without good age constraints, accurate correlation with other areas is very difficult. As a first step in obtaining reliable ages for the formations within the Tetori Group, we used laser ablation-inductively coupled plasma-mass spectrometry to measure the U-Pb ages of zircons collected from tuff beds in the Shokawa district, Takayama City, Gifu Prefecture, central Japan. The youngest reliable U-Pb ages from the tuff beds of the Ushimaru, Mitarai and Okurodani Formations are 130.2 +/- 1.7, 129.8 +/- 1.0 and 117.5 +/- 0.7 Ma, respectively (errors represent 2 SE). These results indicate that the entire Tetori Group in the Shokawa district, which was previously believed to be correlated to the Upper Jurassic to Lower Cretaceous, is in fact correlated to the Lower Cretaceous. The maximum ages of the Ushimaru, Mitarai and Okurodani Formations are late Hauterivian to Barremian, late Hauterivian to Barremian and Barremian to Aptian, respectively. |
| 关键词 | Central Japan Cretaceous Gifu Prefecture Laser Ablation-inductively Coupled Plasma-mass Spectrometry Shokawa Tetori Group U-pb Geochronology Zircon |
| WOS标题词 | Science & Technology ; Physical Sciences |
| URL | 查看原文 |
| 关键词[WOS] | MASS SPECTROMETRY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| WOS记录号 | WOS:000239831900010 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.205/handle/311034/3429 |
| 专题 | 中科院古脊椎所（2000年以后） |
| 通讯作者 | Kusuhashi, N (reprint author), Kyoto Univ, Grad Sch Sci, Dept Geol & Mineral, Kyoto 6068502, Japan. |
| 作者单位 | 1.Kyoto Univ, Grad Sch Sci, Dept Geol & Mineral, Kyoto 6068502, Japan 2.Kyoto Prefectural Nishimaizuru High Sch, Kyoto 6240841, Japan 3.Acad Sci Czech Republ, Inst Geol, CR-16502 Prague, Czech Republic 4.Tokyo Inst Technol, Lab Planetary Sci, Tokyo 1528551, Japan 5.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China |
| 推荐引用方式 GB/T 7714 | Kusuhashi, Nao,Matsumoto, Ai,Murakami, Masaki,et al. Zircon U-Pb ages from tuff beds of the upper Mesozoic Tetori Group in the Shokawa District, Gifu Prefecture, central Japan[J]. ISLAND ARC,2006,15(3):378-390. |
| APA | Kusuhashi, Nao.,Matsumoto, Ai.,Murakami, Masaki.,Tagami, Takahiro.,Hirata, Takafumi.,...&Kusuhashi, N .(2006).Zircon U-Pb ages from tuff beds of the upper Mesozoic Tetori Group in the Shokawa District, Gifu Prefecture, central Japan.ISLAND ARC,15(3),378-390. |
| MLA | Kusuhashi, Nao,et al."Zircon U-Pb ages from tuff beds of the upper Mesozoic Tetori Group in the Shokawa District, Gifu Prefecture, central Japan".ISLAND ARC 15.3(2006):378-390. |
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