Foraminifers and conodonts in the Danlu section, South China: implications for the Viséan–Serpukhovian boundary (Mississippian)

Liu, Chao; Cózar Maldonado, Pedro; Coronado Vila, Ismael; Liang, Tian; Liu, Xiaoxiao; Chen, Hao; Li, Xin; An, Haihua; Zhang, Fukai

Foraminifers and conodonts in the Danlu section, South China: implications for the Viséan–Serpukhovian boundary (Mississippian)

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Foraminifers and conodonts in the Danlu section, South China implications for the Viséan–Serpukhovian boundary (Mississippian) (1).pdf (2.29 MB)

Official URL

https://doi.org/10.1017/S0016756823000262

Publication date

2023

Authors

Liu, Chao

Cózar Maldonado, Pedro

Coronado Vila, Ismael

Publisher

Cambridge University Press

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URI

https://hdl.handle.net/20.500.14352/72383

Abstract

The Viséan–Serpukhovian boundary is poorly defined in South China, hampering regional and global stratigraphical correlations. The foraminiferal and conodont distribution of the Baping Formation in the carbonate-slope Danlu section permits the recognition of an interval from the middle Viséan to the uppermost Serpukhovian in a continuous succession. The base of the Serpukhovian in Danlu is recognized by the first occurrences of Janischewskina delicata, Howchinia subplana and questionable ‘Millerella’ tortula. At a slightly younger level, the conodont Lochriea ziegleri is first recorded. A calibration on the first occurrence of L. ziegleri in different basins at a global scale has been revised compared to auxiliary markers within the ammonoids and foraminifers. The late occurrence of L. ziegleri in the Danlu section also supports a lack of synchronicity in the global first occurrence of this taxon. This study calls for the recognition of a new base for the Serpukhovian under a far better correlation between different zonal schemes and fossil groups.