| 越南东北部Cat Ba岛泥盆系-石炭系过渡层的初探 |
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| 作者姓名： | Toshifumi KOMATSU Reishi TAKASHIMA TA Hoa PHUONG Tran Huyen DANG Duc Phong NGUYEN Huu Hung NGUYEN Satoru KATO Kento HIRATA Takumi MAEKAWA |
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| 作者单位： | Graduate School of Science and Technology, Kumamoto University;The Center for Academic Resources and Archives Tohoku University Museum, Tohoku University;College of Sciences, Vietnam National University;Vietnam Institute of Geosciences and Mineral Resources (VIGMR);Vietnam Institute of Geosciences and Mineral Resources (VIGMR);Vietnam National Museum of Nature (VNMN);Graduate School of Science and Technology, Kumamoto University;Graduate School of Science and Technology, Kumamoto University;Graduate School of Science and Technology, Kumamoto University |
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| 摘 要： | The Pho Han Formation is exposed on southern Cat Ba Island, Hai Phong Province in northeastern Vietnam, and intercalates the Devonian and Carbonif-erous (D-C) boundary (Ta and Doan, 2007; Komatsu et al., 2012). The D-C boundary section consists mainly of limestone beds, numbered from 1 to 167, interca-lated with alternating black organic-rich shales. The limestone yields abundant brachiopods, crinoid-stems and conodonts. Preliminary investigations on strati-graphy (conodont biostratigraphy and δ13C) and sedi-mentology of beds 113-133 were undertaken in this study.
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| 关 键 词： | D-C boundary Conodont δ13C Cat Ba Island Vietnam |
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