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越南东北部Cat Ba岛泥盆系-石炭系过渡层的初探

关键词:D-C boundary Conodont δ13C Cat Ba Island Vietnam

基金项目:

作者	单位
Toshifumi KOMATSU	Graduate School of Science and Technology, Kumamoto University
Reishi TAKASHIMA	The Center for Academic Resources and Archives Tohoku University Museum, Tohoku University
TA Hoa PHUONG	College of Sciences, Vietnam National University
Tran Huyen DANG	Vietnam Institute of Geosciences and Mineral Resources (VIGMR)
Duc Phong NGUYEN	Vietnam Institute of Geosciences and Mineral Resources (VIGMR)
Huu Hung NGUYEN	Vietnam National Museum of Nature (VNMN)
Satoru KATO	Graduate School of Science and Technology, Kumamoto University
Kento HIRATA	Graduate School of Science and Technology, Kumamoto University
Takumi MAEKAWA	Graduate School of Science and Technology, Kumamoto University

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摘要:

Devonian to Carboniferous Transitional Beds on Cat Ba Island, Northeastern Vietnam–A Preliminary Assessment

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.

Toshifumi KOMATSU,Reishi TAKASHIMA,TA Hoa PHUONG,Tran Huyen DANG,Duc Phong NGUYEN,Huu Hung NGUYEN,Satoru KATO,Kento HIRATA,Takumi MAEKAWA.2012.Devonian to Carboniferous Transitional Beds on Cat Ba Island, Northeastern Vietnam–A Preliminary Assessment[J].Acta Geoscientica Sinica,33(s1):38.

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