Stage Boundaries of the Pennsylvanian in the Nashui Section, Luodian of Guizhou Province, South China

详细信息   

• 责任者：Wang Zhihao （Nanjing Institute of Geology and Palaeontology ; Chinese Academy of Sciences ; Nanjing 210008 ; China） ; Qi Yuping
• 刊名：Acta Micropalaeontologica Sinica
• 出版年：2008
• 卷期：25(3)
• 关键词：宾夕法尼亚系 ; Pennsylvanian ; 地层界线 ; stratigraphic boundary ; 贵州 ; Guizhou
• 页码：p.205-214
• 图表：2 tables, 42 refs.
• 分类号：1200
• issnNo：ISSN1000-0674
• isbnNo：CN32-1189/Q

摘要

The Nashui section of Luodian, Guizhou Province is a good section for the study of the Pennsylvanian conodonts and the stage boundaries. This paper displays a new conodont succession from the mid-Carboniferous through the Carboniferous-Permian boundary. The bases of the Declinognathodus noduliferus Zone and the Streptognathodus isolatus Zone are the bases of the Pennsylvanian and Permian, respectively. The first occurrences of Diplognathodus ellesmerensis, Idiognathodus sagittalis and I.simulator represent the bases of the Moscovian, Kasimovian and Gzhelian, respectively.In addition, the Bashkirian-Moscovian boundary and the Kasimovian-Gzhelian boundary are discussed in detail. The first occurrence of Diplognathodus ellesmerensis as the beginning of the Moscovian Stage is a good proposal among proposals for the Bashkirian-Moscovian boundary.Diplognathodus ellesmerensis is easy to be recognized, widely distributed in the world, and has the stable horizon.Its first occurrence is very close to the traditional Bashkirian-Moscovian boundary.We suggest that the Nashui section of Luodian, Guizhou to be a candidate for the global stratotype section and point for the base of the Moscovian Stage. The further study on this boundary is carrying out and more detailed proposal will be submitted later.