The Huohua Section: A New Devonian-Carboniferous Boundary Section of Deep-Water Facies in Ziyun County, Guizhou Province, China
详细信息
- 责任者：Wang Xuri (Institute of Geology ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Ji Qiang
- 刊名：Geological Bulletin of China
- 出版年：2013
- 卷期：32(7)
- 关键词：泥盆纪 ; Devonian ; 石炭纪 ; Carboniferous ; 地层界线 ; stratigraphic boundary ; 贵州 ; Guizhou Province
- 页码：p.977-987
- 图表：2 illus., 1 plate, 1 table, 32 refs.
- issnNo：ISSN1671-2552
- isbnNo：CN11-4648/P
摘要
This pap er introduces a new section of the Devonian-Carboniferous boundary in Huohua area,Ziyun County,Guizhou Province,South China.The Huohua section of Upper Devonian and Lower Carboniferous is well-outcropped along a new countryside road.In this section,the D-C boundary beds can be grouped into three litho-units: the Daihua Formation,the Changshun Shale and the "Wangyou Formation",from which more than 30 conodont samples were collected and processed.According to our current study,some important conodonts in the Daihua Formation and the Changshun Shale have been recognized,such as Palmatolepis tenuipunctata,Pa.glabra,Pa.marginifera,Pa.gracilis,Polygnathus vogesi and Polygnathus purus purus.A few conodonts have been found from the Wangyou Formation,such as Polygnathus communis and Hindeodella subtilis.Based on the comparison with the Muhua section in Changshun county and the Hasselbachtal section in Germany in lithology,sedimentology and conodont biostratigraphy,the D-C boundary could be temporarily placed between Bed 25 and Bed 26,namely between the Changshun Shale and the Wangyou Formation.
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